<?php
/**
* Functions related to registering and parsing blocks.
*
* @package WordPress
* @subpackage Blocks
* @since 5.0.0
*/
/**
* Removes the block asset's path prefix if provided.
*
* @since 5.5.0
*
* @param string $asset_handle_or_path Asset handle or prefixed path.
* @return string Path without the prefix or the original value.
*/
function remove_block_asset_path_prefix( $asset_handle_or_path ) {
$path_prefix = 'file:';
if ( ! str_starts_with( $asset_handle_or_path, $path_prefix ) ) {
return $asset_handle_or_path;
}
$path = substr(
$asset_handle_or_path,
strlen( $path_prefix )
);
if ( str_starts_with( $path, './' ) ) {
$path = substr( $path, 2 );
}
return $path;
}
/**
* Generates the name for an asset based on the name of the block
* and the field name provided.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
* @since 6.5.0 Added support for `viewScriptModule` field.
*
* @param string $block_name Name of the block.
* @param string $field_name Name of the metadata field.
* @param int $index Optional. Index of the asset when multiple items passed.
* Default 0.
* @return string Generated asset name for the block's field.
*/
function generate_block_asset_handle( $block_name, $field_name, $index = 0 ) {
if ( str_starts_with( $block_name, 'core/' ) ) {
$asset_handle = str_replace( 'core/', 'wp-block-', $block_name );
if ( str_starts_with( $field_name, 'editor' ) ) {
$asset_handle .= '-editor';
}
if ( str_starts_with( $field_name, 'view' ) ) {
$asset_handle .= '-view';
}
if ( str_ends_with( strtolower( $field_name ), 'scriptmodule' ) ) {
$asset_handle .= '-script-module';
}
if ( $index > 0 ) {
$asset_handle .= '-' . ( $index + 1 );
}
return $asset_handle;
}
$field_mappings = array(
'editorScript' => 'editor-script',
'editorStyle' => 'editor-style',
'script' => 'script',
'style' => 'style',
'viewScript' => 'view-script',
'viewScriptModule' => 'view-script-module',
'viewStyle' => 'view-style',
);
$asset_handle = str_replace( '/', '-', $block_name ) .
'-' . $field_mappings[ $field_name ];
if ( $index > 0 ) {
$asset_handle .= '-' . ( $index + 1 );
}
return $asset_handle;
}
/**
* Gets the URL to a block asset.
*
* @since 6.4.0
*
* @param string $path A normalized path to a block asset.
* @return string|false The URL to the block asset or false on failure.
*/
function get_block_asset_url( $path ) {
if ( empty( $path ) ) {
return false;
}
// Path needs to be normalized to work in Windows env.
static $wpinc_path_norm = '';
if ( ! $wpinc_path_norm ) {
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
}
if ( str_starts_with( $path, $wpinc_path_norm ) ) {
return includes_url( str_replace( $wpinc_path_norm, '', $path ) );
}
static $template_paths_norm = array();
$template = get_template();
if ( ! isset( $template_paths_norm[ $template ] ) ) {
$template_paths_norm[ $template ] = wp_normalize_path( realpath( get_template_directory() ) );
}
if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $template ] ) ) ) {
return get_theme_file_uri( str_replace( $template_paths_norm[ $template ], '', $path ) );
}
if ( is_child_theme() ) {
$stylesheet = get_stylesheet();
if ( ! isset( $template_paths_norm[ $stylesheet ] ) ) {
$template_paths_norm[ $stylesheet ] = wp_normalize_path( realpath( get_stylesheet_directory() ) );
}
if ( str_starts_with( $path, trailingslashit( $template_paths_norm[ $stylesheet ] ) ) ) {
return get_theme_file_uri( str_replace( $template_paths_norm[ $stylesheet ], '', $path ) );
}
}
return plugins_url( basename( $path ), $path );
}
/**
* Finds a script module ID for the selected block metadata field. It detects
* when a path to file was provided and optionally finds a corresponding asset
* file with details necessary to register the script module under with an
* automatically generated module ID. It returns unprocessed script module
* ID otherwise.
*
* @since 6.5.0
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the script module ID to register when multiple
* items passed. Default 0.
* @return string|false Script module ID or false on failure.
*/
function register_block_script_module_id( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$module_id = $metadata[ $field_name ];
if ( is_array( $module_id ) ) {
if ( empty( $module_id[ $index ] ) ) {
return false;
}
$module_id = $module_id[ $index ];
}
$module_path = remove_block_asset_path_prefix( $module_id );
if ( $module_id === $module_path ) {
return $module_id;
}
$path = dirname( $metadata['file'] );
$module_asset_raw_path = $path . '/' . substr_replace( $module_path, '.asset.php', - strlen( '.js' ) );
$module_id = generate_block_asset_handle( $metadata['name'], $field_name, $index );
$module_asset_path = wp_normalize_path(
realpath( $module_asset_raw_path )
);
$module_path_norm = wp_normalize_path( realpath( $path . '/' . $module_path ) );
$module_uri = get_block_asset_url( $module_path_norm );
$module_asset = ! empty( $module_asset_path ) ? require $module_asset_path : array();
$module_dependencies = isset( $module_asset['dependencies'] ) ? $module_asset['dependencies'] : array();
$block_version = isset( $metadata['version'] ) ? $metadata['version'] : false;
$module_version = isset( $module_asset['version'] ) ? $module_asset['version'] : $block_version;
wp_register_script_module(
$module_id,
$module_uri,
$module_dependencies,
$module_version
);
return $module_id;
}
/**
* Finds a script handle for the selected block metadata field. It detects
* when a path to file was provided and optionally finds a corresponding asset
* file with details necessary to register the script under automatically
* generated handle name. It returns unprocessed script handle otherwise.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
* @since 6.5.0 The asset file is optional. Added script handle support in the asset file.
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the script to register when multiple items passed.
* Default 0.
* @return string|false Script handle provided directly or created through
* script's registration, or false on failure.
*/
function register_block_script_handle( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$script_handle_or_path = $metadata[ $field_name ];
if ( is_array( $script_handle_or_path ) ) {
if ( empty( $script_handle_or_path[ $index ] ) ) {
return false;
}
$script_handle_or_path = $script_handle_or_path[ $index ];
}
$script_path = remove_block_asset_path_prefix( $script_handle_or_path );
if ( $script_handle_or_path === $script_path ) {
return $script_handle_or_path;
}
$path = dirname( $metadata['file'] );
$script_asset_raw_path = $path . '/' . substr_replace( $script_path, '.asset.php', - strlen( '.js' ) );
$script_asset_path = wp_normalize_path(
realpath( $script_asset_raw_path )
);
// Asset file for blocks is optional. See https://core.trac.wordpress.org/ticket/60460.
$script_asset = ! empty( $script_asset_path ) ? require $script_asset_path : array();
$script_handle = isset( $script_asset['handle'] ) ?
$script_asset['handle'] :
generate_block_asset_handle( $metadata['name'], $field_name, $index );
if ( wp_script_is( $script_handle, 'registered' ) ) {
return $script_handle;
}
$script_path_norm = wp_normalize_path( realpath( $path . '/' . $script_path ) );
$script_uri = get_block_asset_url( $script_path_norm );
$script_dependencies = isset( $script_asset['dependencies'] ) ? $script_asset['dependencies'] : array();
$block_version = isset( $metadata['version'] ) ? $metadata['version'] : false;
$script_version = isset( $script_asset['version'] ) ? $script_asset['version'] : $block_version;
$script_args = array();
if ( 'viewScript' === $field_name && $script_uri ) {
$script_args['strategy'] = 'defer';
}
$result = wp_register_script(
$script_handle,
$script_uri,
$script_dependencies,
$script_version,
$script_args
);
if ( ! $result ) {
return false;
}
if ( ! empty( $metadata['textdomain'] ) && in_array( 'wp-i18n', $script_dependencies, true ) ) {
wp_set_script_translations( $script_handle, $metadata['textdomain'] );
}
return $script_handle;
}
/**
* Finds a style handle for the block metadata field. It detects when a path
* to file was provided and registers the style under automatically
* generated handle name. It returns unprocessed style handle otherwise.
*
* @since 5.5.0
* @since 6.1.0 Added `$index` parameter.
*
* @param array $metadata Block metadata.
* @param string $field_name Field name to pick from metadata.
* @param int $index Optional. Index of the style to register when multiple items passed.
* Default 0.
* @return string|false Style handle provided directly or created through
* style's registration, or false on failure.
*/
function register_block_style_handle( $metadata, $field_name, $index = 0 ) {
if ( empty( $metadata[ $field_name ] ) ) {
return false;
}
$style_handle = $metadata[ $field_name ];
if ( is_array( $style_handle ) ) {
if ( empty( $style_handle[ $index ] ) ) {
return false;
}
$style_handle = $style_handle[ $index ];
}
$style_handle_name = generate_block_asset_handle( $metadata['name'], $field_name, $index );
// If the style handle is already registered, skip re-registering.
if ( wp_style_is( $style_handle_name, 'registered' ) ) {
return $style_handle_name;
}
static $wpinc_path_norm = '';
if ( ! $wpinc_path_norm ) {
$wpinc_path_norm = wp_normalize_path( realpath( ABSPATH . WPINC ) );
}
$is_core_block = isset( $metadata['file'] ) && str_starts_with( $metadata['file'], $wpinc_path_norm );
// Skip registering individual styles for each core block when a bundled version provided.
if ( $is_core_block && ! wp_should_load_separate_core_block_assets() ) {
return false;
}
$style_path = remove_block_asset_path_prefix( $style_handle );
$is_style_handle = $style_handle === $style_path;
// Allow only passing style handles for core blocks.
if ( $is_core_block && ! $is_style_handle ) {
return false;
}
// Return the style handle unless it's the first item for every core block that requires special treatment.
if ( $is_style_handle && ! ( $is_core_block && 0 === $index ) ) {
return $style_handle;
}
// Check whether styles should have a ".min" suffix or not.
$suffix = SCRIPT_DEBUG ? '' : '.min';
if ( $is_core_block ) {
$style_path = ( 'editorStyle' === $field_name ) ? "editor{$suffix}.css" : "style{$suffix}.css";
}
$style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) );
$style_uri = get_block_asset_url( $style_path_norm );
$block_version = ! $is_core_block && isset( $metadata['version'] ) ? $metadata['version'] : false;
$version = $style_path_norm && defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? filemtime( $style_path_norm ) : $block_version;
$result = wp_register_style(
$style_handle_name,
$style_uri,
array(),
$version
);
if ( ! $result ) {
return false;
}
if ( $style_uri ) {
wp_style_add_data( $style_handle_name, 'path', $style_path_norm );
if ( $is_core_block ) {
$rtl_file = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $style_path_norm );
} else {
$rtl_file = str_replace( '.css', '-rtl.css', $style_path_norm );
}
if ( is_rtl() && file_exists( $rtl_file ) ) {
wp_style_add_data( $style_handle_name, 'rtl', 'replace' );
wp_style_add_data( $style_handle_name, 'suffix', $suffix );
wp_style_add_data( $style_handle_name, 'path', $rtl_file );
}
}
return $style_handle_name;
}
/**
* Gets i18n schema for block's metadata read from `block.json` file.
*
* @since 5.9.0
*
* @return object The schema for block's metadata.
*/
function get_block_metadata_i18n_schema() {
static $i18n_block_schema;
if ( ! isset( $i18n_block_schema ) ) {
$i18n_block_schema = wp_json_file_decode( __DIR__ . '/block-i18n.json' );
}
return $i18n_block_schema;
}
/**
* Registers all block types from a block metadata collection.
*
* This can either reference a previously registered metadata collection or, if the `$manifest` parameter is provided,
* register the metadata collection directly within the same function call.
*
* @since 6.8.0
* @see wp_register_block_metadata_collection()
* @see register_block_type_from_metadata()
*
* @param string $path The absolute base path for the collection ( e.g., WP_PLUGIN_DIR . '/my-plugin/blocks/' ).
* @param string $manifest Optional. The absolute path to the manifest file containing the metadata collection, in
* order to register the collection. If this parameter is not provided, the `$path` parameter
* must reference a previously registered block metadata collection.
*/
function wp_register_block_types_from_metadata_collection( $path, $manifest = '' ) {
if ( $manifest ) {
wp_register_block_metadata_collection( $path, $manifest );
}
$block_metadata_files = WP_Block_Metadata_Registry::get_collection_block_metadata_files( $path );
foreach ( $block_metadata_files as $block_metadata_file ) {
register_block_type_from_metadata( $block_metadata_file );
}
}
/**
* Registers a block metadata collection.
*
* This function allows core and third-party plugins to register their block metadata
* collections in a centralized location. Registering collections can improve performance
* by avoiding multiple reads from the filesystem and parsing JSON.
*
* @since 6.7.0
*
* @param string $path The base path in which block files for the collection reside.
* @param string $manifest The path to the manifest file for the collection.
*/
function wp_register_block_metadata_collection( $path, $manifest ) {
WP_Block_Metadata_Registry::register_collection( $path, $manifest );
}
/**
* Registers a block type from the metadata stored in the `block.json` file.
*
* @since 5.5.0
* @since 5.7.0 Added support for `textdomain` field and i18n handling for all translatable fields.
* @since 5.9.0 Added support for `variations` and `viewScript` fields.
* @since 6.1.0 Added support for `render` field.
* @since 6.3.0 Added `selectors` field.
* @since 6.4.0 Added support for `blockHooks` field.
* @since 6.5.0 Added support for `allowedBlocks`, `viewScriptModule`, and `viewStyle` fields.
* @since 6.7.0 Allow PHP filename as `variations` argument.
*
* @param string $file_or_folder Path to the JSON file with metadata definition for
* the block or path to the folder where the `block.json` file is located.
* If providing the path to a JSON file, the filename must end with `block.json`.
* @param array $args Optional. Array of block type arguments. Accepts any public property
* of `WP_Block_Type`. See WP_Block_Type::__construct() for information
* on accepted arguments. Default empty array.
* @return WP_Block_Type|false The registered block type on success, or false on failure.
*/
function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
/*
* Get an array of metadata from a PHP file.
* This improves performance for core blocks as it's only necessary to read a single PHP file
* instead of reading a JSON file per-block, and then decoding from JSON to PHP.
* Using a static variable ensures that the metadata is only read once per request.
*/
$file_or_folder = wp_normalize_path( $file_or_folder );
$metadata_file = ( ! str_ends_with( $file_or_folder, 'block.json' ) ) ?
trailingslashit( $file_or_folder ) . 'block.json' :
$file_or_folder;
$is_core_block = str_starts_with( $file_or_folder, wp_normalize_path( ABSPATH . WPINC ) );
$metadata_file_exists = $is_core_block || file_exists( $metadata_file );
$registry_metadata = WP_Block_Metadata_Registry::get_metadata( $file_or_folder );
if ( $registry_metadata ) {
$metadata = $registry_metadata;
} elseif ( $metadata_file_exists ) {
$metadata = wp_json_file_decode( $metadata_file, array( 'associative' => true ) );
} else {
$metadata = array();
}
if ( ! is_array( $metadata ) || ( empty( $metadata['name'] ) && empty( $args['name'] ) ) ) {
return false;
}
$metadata['file'] = $metadata_file_exists ? wp_normalize_path( realpath( $metadata_file ) ) : null;
/**
* Filters the metadata provided for registering a block type.
*
* @since 5.7.0
*
* @param array $metadata Metadata for registering a block type.
*/
$metadata = apply_filters( 'block_type_metadata', $metadata );
// Add `style` and `editor_style` for core blocks if missing.
if ( ! empty( $metadata['name'] ) && str_starts_with( $metadata['name'], 'core/' ) ) {
$block_name = str_replace( 'core/', '', $metadata['name'] );
if ( ! isset( $metadata['style'] ) ) {
$metadata['style'] = "wp-block-$block_name";
}
if ( current_theme_supports( 'wp-block-styles' ) && wp_should_load_separate_core_block_assets() ) {
$metadata['style'] = (array) $metadata['style'];
$metadata['style'][] = "wp-block-{$block_name}-theme";
}
if ( ! isset( $metadata['editorStyle'] ) ) {
$metadata['editorStyle'] = "wp-block-{$block_name}-editor";
}
}
$settings = array();
$property_mappings = array(
'apiVersion' => 'api_version',
'name' => 'name',
'title' => 'title',
'category' => 'category',
'parent' => 'parent',
'ancestor' => 'ancestor',
'icon' => 'icon',
'description' => 'description',
'keywords' => 'keywords',
'attributes' => 'attributes',
'providesContext' => 'provides_context',
'usesContext' => 'uses_context',
'selectors' => 'selectors',
'supports' => 'supports',
'styles' => 'styles',
'variations' => 'variations',
'example' => 'example',
'allowedBlocks' => 'allowed_blocks',
);
$textdomain = ! empty( $metadata['textdomain'] ) ? $metadata['textdomain'] : null;
$i18n_schema = get_block_metadata_i18n_schema();
foreach ( $property_mappings as $key => $mapped_key ) {
if ( isset( $metadata[ $key ] ) ) {
$settings[ $mapped_key ] = $metadata[ $key ];
if ( $metadata_file_exists && $textdomain && isset( $i18n_schema->$key ) ) {
$settings[ $mapped_key ] = translate_settings_using_i18n_schema( $i18n_schema->$key, $settings[ $key ], $textdomain );
}
}
}
if ( ! empty( $metadata['render'] ) ) {
$template_path = wp_normalize_path(
realpath(
dirname( $metadata['file'] ) . '/' .
remove_block_asset_path_prefix( $metadata['render'] )
)
);
if ( $template_path ) {
/**
* Renders the block on the server.
*
* @since 6.1.0
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block Block instance.
*
* @return string Returns the block content.
*/
$settings['render_callback'] = static function ( $attributes, $content, $block ) use ( $template_path ) {
ob_start();
require $template_path;
return ob_get_clean();
};
}
}
// If `variations` is a string, it's the name of a PHP file that
// generates the variations.
if ( ! empty( $metadata['variations'] ) && is_string( $metadata['variations'] ) ) {
$variations_path = wp_normalize_path(
realpath(
dirname( $metadata['file'] ) . '/' .
remove_block_asset_path_prefix( $metadata['variations'] )
)
);
if ( $variations_path ) {
/**
* Generates the list of block variations.
*
* @since 6.7.0
*
* @return string Returns the list of block variations.
*/
$settings['variation_callback'] = static function () use ( $variations_path ) {
$variations = require $variations_path;
return $variations;
};
// The block instance's `variations` field is only allowed to be an array
// (of known block variations). We unset it so that the block instance will
// provide a getter that returns the result of the `variation_callback` instead.
unset( $settings['variations'] );
}
}
$settings = array_merge( $settings, $args );
$script_fields = array(
'editorScript' => 'editor_script_handles',
'script' => 'script_handles',
'viewScript' => 'view_script_handles',
);
foreach ( $script_fields as $metadata_field_name => $settings_field_name ) {
if ( ! empty( $settings[ $metadata_field_name ] ) ) {
$metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ];
}
if ( ! empty( $metadata[ $metadata_field_name ] ) ) {
$scripts = $metadata[ $metadata_field_name ];
$processed_scripts = array();
if ( is_array( $scripts ) ) {
for ( $index = 0; $index < count( $scripts ); $index++ ) {
$result = register_block_script_handle(
$metadata,
$metadata_field_name,
$index
);
if ( $result ) {
$processed_scripts[] = $result;
}
}
} else {
$result = register_block_script_handle(
$metadata,
$metadata_field_name
);
if ( $result ) {
$processed_scripts[] = $result;
}
}
$settings[ $settings_field_name ] = $processed_scripts;
}
}
$module_fields = array(
'viewScriptModule' => 'view_script_module_ids',
);
foreach ( $module_fields as $metadata_field_name => $settings_field_name ) {
if ( ! empty( $settings[ $metadata_field_name ] ) ) {
$metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ];
}
if ( ! empty( $metadata[ $metadata_field_name ] ) ) {
$modules = $metadata[ $metadata_field_name ];
$processed_modules = array();
if ( is_array( $modules ) ) {
for ( $index = 0; $index < count( $modules ); $index++ ) {
$result = register_block_script_module_id(
$metadata,
$metadata_field_name,
$index
);
if ( $result ) {
$processed_modules[] = $result;
}
}
} else {
$result = register_block_script_module_id(
$metadata,
$metadata_field_name
);
if ( $result ) {
$processed_modules[] = $result;
}
}
$settings[ $settings_field_name ] = $processed_modules;
}
}
$style_fields = array(
'editorStyle' => 'editor_style_handles',
'style' => 'style_handles',
'viewStyle' => 'view_style_handles',
);
foreach ( $style_fields as $metadata_field_name => $settings_field_name ) {
if ( ! empty( $settings[ $metadata_field_name ] ) ) {
$metadata[ $metadata_field_name ] = $settings[ $metadata_field_name ];
}
if ( ! empty( $metadata[ $metadata_field_name ] ) ) {
$styles = $metadata[ $metadata_field_name ];
$processed_styles = array();
if ( is_array( $styles ) ) {
for ( $index = 0; $index < count( $styles ); $index++ ) {
$result = register_block_style_handle(
$metadata,
$metadata_field_name,
$index
);
if ( $result ) {
$processed_styles[] = $result;
}
}
} else {
$result = register_block_style_handle(
$metadata,
$metadata_field_name
);
if ( $result ) {
$processed_styles[] = $result;
}
}
$settings[ $settings_field_name ] = $processed_styles;
}
}
if ( ! empty( $metadata['blockHooks'] ) ) {
/**
* Map camelCased position string (from block.json) to snake_cased block type position.
*
* @var array
*/
$position_mappings = array(
'before' => 'before',
'after' => 'after',
'firstChild' => 'first_child',
'lastChild' => 'last_child',
);
$settings['block_hooks'] = array();
foreach ( $metadata['blockHooks'] as $anchor_block_name => $position ) {
// Avoid infinite recursion (hooking to itself).
if ( $metadata['name'] === $anchor_block_name ) {
_doing_it_wrong(
__METHOD__,
__( 'Cannot hook block to itself.' ),
'6.4.0'
);
continue;
}
if ( ! isset( $position_mappings[ $position ] ) ) {
continue;
}
$settings['block_hooks'][ $anchor_block_name ] = $position_mappings[ $position ];
}
}
/**
* Filters the settings determined from the block type metadata.
*
* @since 5.7.0
*
* @param array $settings Array of determined settings for registering a block type.
* @param array $metadata Metadata provided for registering a block type.
*/
$settings = apply_filters( 'block_type_metadata_settings', $settings, $metadata );
$metadata['name'] = ! empty( $settings['name'] ) ? $settings['name'] : $metadata['name'];
return WP_Block_Type_Registry::get_instance()->register(
$metadata['name'],
$settings
);
}
/**
* Registers a block type. The recommended way is to register a block type using
* the metadata stored in the `block.json` file.
*
* @since 5.0.0
* @since 5.8.0 First parameter now accepts a path to the `block.json` file.
*
* @param string|WP_Block_Type $block_type Block type name including namespace, or alternatively
* a path to the JSON file with metadata definition for the block,
* or a path to the folder where the `block.json` file is located,
* or a complete WP_Block_Type instance.
* In case a WP_Block_Type is provided, the $args parameter will be ignored.
* @param array $args Optional. Array of block type arguments. Accepts any public property
* of `WP_Block_Type`. See WP_Block_Type::__construct() for information
* on accepted arguments. Default empty array.
*
* @return WP_Block_Type|false The registered block type on success, or false on failure.
*/
function register_block_type( $block_type, $args = array() ) {
if ( is_string( $block_type ) && file_exists( $block_type ) ) {
return register_block_type_from_metadata( $block_type, $args );
}
return WP_Block_Type_Registry::get_instance()->register( $block_type, $args );
}
/**
* Unregisters a block type.
*
* @since 5.0.0
*
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
* a complete WP_Block_Type instance.
* @return WP_Block_Type|false The unregistered block type on success, or false on failure.
*/
function unregister_block_type( $name ) {
return WP_Block_Type_Registry::get_instance()->unregister( $name );
}
/**
* Determines whether a post or content string has blocks.
*
* This test optimizes for performance rather than strict accuracy, detecting
* the pattern of a block but not validating its structure. For strict accuracy,
* you should use the block parser on post content.
*
* @since 5.0.0
*
* @see parse_blocks()
*
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object.
* Defaults to global $post.
* @return bool Whether the post has blocks.
*/
function has_blocks( $post = null ) {
if ( ! is_string( $post ) ) {
$wp_post = get_post( $post );
if ( ! $wp_post instanceof WP_Post ) {
return false;
}
$post = $wp_post->post_content;
}
return str_contains( (string) $post, '<!-- wp:' );
}
/**
* Determines whether a $post or a string contains a specific block type.
*
* This test optimizes for performance rather than strict accuracy, detecting
* whether the block type exists but not validating its structure and not checking
* synced patterns (formerly called reusable blocks). For strict accuracy,
* you should use the block parser on post content.
*
* @since 5.0.0
*
* @see parse_blocks()
*
* @param string $block_name Full block type to look for.
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object.
* Defaults to global $post.
* @return bool Whether the post content contains the specified block.
*/
function has_block( $block_name, $post = null ) {
if ( ! has_blocks( $post ) ) {
return false;
}
if ( ! is_string( $post ) ) {
$wp_post = get_post( $post );
if ( $wp_post instanceof WP_Post ) {
$post = $wp_post->post_content;
}
}
/*
* Normalize block name to include namespace, if provided as non-namespaced.
* This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by
* their serialized names.
*/
if ( ! str_contains( $block_name, '/' ) ) {
$block_name = 'core/' . $block_name;
}
// Test for existence of block by its fully qualified name.
$has_block = str_contains( $post, '<!-- wp:' . $block_name . ' ' );
if ( ! $has_block ) {
/*
* If the given block name would serialize to a different name, test for
* existence by the serialized form.
*/
$serialized_block_name = strip_core_block_namespace( $block_name );
if ( $serialized_block_name !== $block_name ) {
$has_block = str_contains( $post, '<!-- wp:' . $serialized_block_name . ' ' );
}
}
return $has_block;
}
/**
* Returns an array of the names of all registered dynamic block types.
*
* @since 5.0.0
*
* @return string[] Array of dynamic block names.
*/
function get_dynamic_block_names() {
$dynamic_block_names = array();
$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
foreach ( $block_types as $block_type ) {
if ( $block_type->is_dynamic() ) {
$dynamic_block_names[] = $block_type->name;
}
}
return $dynamic_block_names;
}
/**
* Retrieves block types hooked into the given block, grouped by anchor block type and the relative position.
*
* @since 6.4.0
*
* @return array[] Array of block types grouped by anchor block type and the relative position.
*/
function get_hooked_blocks() {
$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
$hooked_blocks = array();
foreach ( $block_types as $block_type ) {
if ( ! ( $block_type instanceof WP_Block_Type ) || ! is_array( $block_type->block_hooks ) ) {
continue;
}
foreach ( $block_type->block_hooks as $anchor_block_type => $relative_position ) {
if ( ! isset( $hooked_blocks[ $anchor_block_type ] ) ) {
$hooked_blocks[ $anchor_block_type ] = array();
}
if ( ! isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) ) {
$hooked_blocks[ $anchor_block_type ][ $relative_position ] = array();
}
$hooked_blocks[ $anchor_block_type ][ $relative_position ][] = $block_type->name;
}
}
return $hooked_blocks;
}
/**
* Returns the markup for blocks hooked to the given anchor block in a specific relative position.
*
* @since 6.5.0
* @access private
*
* @param array $parsed_anchor_block The anchor block, in parsed block array format.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to.
* @return string
*/
function insert_hooked_blocks( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) {
$anchor_block_type = $parsed_anchor_block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();
/**
* Filters the list of hooked block types for a given anchor block type and relative position.
*
* @since 6.4.0
*
* @param string[] $hooked_block_types The list of hooked block types.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param string $anchor_block_type The anchor block type.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, post object,
* or pattern that the anchor block belongs to.
*/
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
$markup = '';
foreach ( $hooked_block_types as $hooked_block_type ) {
$parsed_hooked_block = array(
'blockName' => $hooked_block_type,
'attrs' => array(),
'innerBlocks' => array(),
'innerContent' => array(),
);
/**
* Filters the parsed block array for a given hooked block.
*
* @since 6.5.0
*
* @param array|null $parsed_hooked_block The parsed block array for the given hooked block type, or null to suppress the block.
* @param string $hooked_block_type The hooked block type name.
* @param string $relative_position The relative position of the hooked block.
* @param array $parsed_anchor_block The anchor block, in parsed block array format.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, post object,
* or pattern that the anchor block belongs to.
*/
$parsed_hooked_block = apply_filters( 'hooked_block', $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context );
/**
* Filters the parsed block array for a given hooked block.
*
* The dynamic portion of the hook name, `$hooked_block_type`, refers to the block type name of the specific hooked block.
*
* @since 6.5.0
*
* @param array|null $parsed_hooked_block The parsed block array for the given hooked block type, or null to suppress the block.
* @param string $hooked_block_type The hooked block type name.
* @param string $relative_position The relative position of the hooked block.
* @param array $parsed_anchor_block The anchor block, in parsed block array format.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, post object,
* or pattern that the anchor block belongs to.
*/
$parsed_hooked_block = apply_filters( "hooked_block_{$hooked_block_type}", $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context );
if ( null === $parsed_hooked_block ) {
continue;
}
// It's possible that the filter returned a block of a different type, so we explicitly
// look for the original `$hooked_block_type` in the `ignoredHookedBlocks` metadata.
if (
! isset( $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] ) ||
! in_array( $hooked_block_type, $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'], true )
) {
$markup .= serialize_block( $parsed_hooked_block );
}
}
return $markup;
}
/**
* Adds a list of hooked block types to an anchor block's ignored hooked block types.
*
* This function is meant for internal use only.
*
* @since 6.5.0
* @access private
*
* @param array $parsed_anchor_block The anchor block, in parsed block array format.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to.
* @return string Empty string.
*/
function set_ignored_hooked_blocks_metadata( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) {
$anchor_block_type = $parsed_anchor_block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();
/** This filter is documented in wp-includes/blocks.php */
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
if ( empty( $hooked_block_types ) ) {
return '';
}
foreach ( $hooked_block_types as $index => $hooked_block_type ) {
$parsed_hooked_block = array(
'blockName' => $hooked_block_type,
'attrs' => array(),
'innerBlocks' => array(),
'innerContent' => array(),
);
/** This filter is documented in wp-includes/blocks.php */
$parsed_hooked_block = apply_filters( 'hooked_block', $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context );
/** This filter is documented in wp-includes/blocks.php */
$parsed_hooked_block = apply_filters( "hooked_block_{$hooked_block_type}", $parsed_hooked_block, $hooked_block_type, $relative_position, $parsed_anchor_block, $context );
if ( null === $parsed_hooked_block ) {
unset( $hooked_block_types[ $index ] );
}
}
$previously_ignored_hooked_blocks = isset( $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] )
? $parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks']
: array();
$parsed_anchor_block['attrs']['metadata']['ignoredHookedBlocks'] = array_unique(
array_merge(
$previously_ignored_hooked_blocks,
$hooked_block_types
)
);
// Markup for the hooked blocks has already been created (in `insert_hooked_blocks`).
return '';
}
/**
* Runs the hooked blocks algorithm on the given content.
*
* @since 6.6.0
* @since 6.7.0 Injects the `theme` attribute into Template Part blocks, even if no hooked blocks are registered.
* @since 6.8.0 Have the `$context` parameter default to `null`, in which case `get_post()` will be called to use the current post as context.
* @access private
*
* @param string $content Serialized content.
* @param WP_Block_Template|WP_Post|array|null $context A block template, template part, post object, or pattern
* that the blocks belong to. If set to `null`, `get_post()`
* will be called to use the current post as context.
* Default: `null`.
* @param callable $callback A function that will be called for each block to generate
* the markup for a given list of blocks that are hooked to it.
* Default: 'insert_hooked_blocks'.
* @return string The serialized markup.
*/
function apply_block_hooks_to_content( $content, $context = null, $callback = 'insert_hooked_blocks' ) {
// Default to the current post if no context is provided.
if ( null === $context ) {
$context = get_post();
}
$hooked_blocks = get_hooked_blocks();
$before_block_visitor = '_inject_theme_attribute_in_template_part_block';
$after_block_visitor = null;
if ( ! empty( $hooked_blocks ) || has_filter( 'hooked_block_types' ) ) {
$before_block_visitor = make_before_block_visitor( $hooked_blocks, $context, $callback );
$after_block_visitor = make_after_block_visitor( $hooked_blocks, $context, $callback );
}
$block_allows_multiple_instances = array();
/*
* Remove hooked blocks from `$hooked_block_types` if they have `multiple` set to false and
* are already present in `$content`.
*/
foreach ( $hooked_blocks as $anchor_block_type => $relative_positions ) {
foreach ( $relative_positions as $relative_position => $hooked_block_types ) {
foreach ( $hooked_block_types as $index => $hooked_block_type ) {
$hooked_block_type_definition =
WP_Block_Type_Registry::get_instance()->get_registered( $hooked_block_type );
$block_allows_multiple_instances[ $hooked_block_type ] =
block_has_support( $hooked_block_type_definition, 'multiple', true );
if (
! $block_allows_multiple_instances[ $hooked_block_type ] &&
has_block( $hooked_block_type, $content )
) {
unset( $hooked_blocks[ $anchor_block_type ][ $relative_position ][ $index ] );
}
}
if ( empty( $hooked_blocks[ $anchor_block_type ][ $relative_position ] ) ) {
unset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] );
}
}
if ( empty( $hooked_blocks[ $anchor_block_type ] ) ) {
unset( $hooked_blocks[ $anchor_block_type ] );
}
}
/*
* We also need to cover the case where the hooked block is not present in
* `$content` at first and we're allowed to insert it once -- but not again.
*/
$suppress_single_instance_blocks = static function ( $hooked_block_types ) use ( &$block_allows_multiple_instances, $content ) {
static $single_instance_blocks_present_in_content = array();
foreach ( $hooked_block_types as $index => $hooked_block_type ) {
if ( ! isset( $block_allows_multiple_instances[ $hooked_block_type ] ) ) {
$hooked_block_type_definition =
WP_Block_Type_Registry::get_instance()->get_registered( $hooked_block_type );
$block_allows_multiple_instances[ $hooked_block_type ] =
block_has_support( $hooked_block_type_definition, 'multiple', true );
}
if ( $block_allows_multiple_instances[ $hooked_block_type ] ) {
continue;
}
// The block doesn't allow multiple instances, so we need to check if it's already present.
if (
in_array( $hooked_block_type, $single_instance_blocks_present_in_content, true ) ||
has_block( $hooked_block_type, $content )
) {
unset( $hooked_block_types[ $index ] );
} else {
// We can insert the block once, but need to remember not to insert it again.
$single_instance_blocks_present_in_content[] = $hooked_block_type;
}
}
return $hooked_block_types;
};
add_filter( 'hooked_block_types', $suppress_single_instance_blocks, PHP_INT_MAX );
$content = traverse_and_serialize_blocks(
parse_blocks( $content ),
$before_block_visitor,
$after_block_visitor
);
remove_filter( 'hooked_block_types', $suppress_single_instance_blocks, PHP_INT_MAX );
return $content;
}
/**
* Run the Block Hooks algorithm on a post object's content.
*
* This function is different from `apply_block_hooks_to_content` in that
* it takes ignored hooked block information from the post's metadata into
* account. This ensures that any blocks hooked as first or last child
* of the block that corresponds to the post type are handled correctly.
*
* @since 6.8.0
* @access private
*
* @param string $content Serialized content.
* @param WP_Post|null $post A post object that the content belongs to. If set to `null`,
* `get_post()` will be called to use the current post as context.
* Default: `null`.
* @param callable $callback A function that will be called for each block to generate
* the markup for a given list of blocks that are hooked to it.
* Default: 'insert_hooked_blocks'.
* @return string The serialized markup.
*/
function apply_block_hooks_to_content_from_post_object( $content, $post = null, $callback = 'insert_hooked_blocks' ) {
// Default to the current post if no context is provided.
if ( null === $post ) {
$post = get_post();
}
if ( ! $post instanceof WP_Post ) {
return apply_block_hooks_to_content( $content, $post, $callback );
}
/*
* If the content was created using the classic editor or using a single Classic block
* (`core/freeform`), it might not contain any block markup at all.
* However, we still might need to inject hooked blocks in the first child or last child
* positions of the parent block. To be able to apply the Block Hooks algorithm, we wrap
* the content in a `core/freeform` wrapper block.
*/
if ( ! has_blocks( $content ) ) {
$original_content = $content;
$content_wrapped_in_classic_block = get_comment_delimited_block_content(
'core/freeform',
array(),
$content
);
$content = $content_wrapped_in_classic_block;
}
$attributes = array();
// If context is a post object, `ignoredHookedBlocks` information is stored in its post meta.
$ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true );
if ( ! empty( $ignored_hooked_blocks ) ) {
$ignored_hooked_blocks = json_decode( $ignored_hooked_blocks, true );
$attributes['metadata'] = array(
'ignoredHookedBlocks' => $ignored_hooked_blocks,
);
}
/*
* We need to wrap the content in a temporary wrapper block with that metadata
* so the Block Hooks algorithm can insert blocks that are hooked as first or last child
* of the wrapper block.
* To that end, we need to determine the wrapper block type based on the post type.
*/
if ( 'wp_navigation' === $post->post_type ) {
$wrapper_block_type = 'core/navigation';
} elseif ( 'wp_block' === $post->post_type ) {
$wrapper_block_type = 'core/block';
} else {
$wrapper_block_type = 'core/post-content';
}
$content = get_comment_delimited_block_content(
$wrapper_block_type,
$attributes,
$content
);
/*
* We need to avoid inserting any blocks hooked into the `before` and `after` positions
* of the temporary wrapper block that we create to wrap the content.
* See https://core.trac.wordpress.org/ticket/63287 for more details.
*/
$suppress_blocks_from_insertion_before_and_after_wrapper_block = static function ( $hooked_block_types, $relative_position, $anchor_block_type ) use ( $wrapper_block_type ) {
if (
$wrapper_block_type === $anchor_block_type &&
in_array( $relative_position, array( 'before', 'after' ), true )
) {
return array();
}
return $hooked_block_types;
};
// Apply Block Hooks.
add_filter( 'hooked_block_types', $suppress_blocks_from_insertion_before_and_after_wrapper_block, PHP_INT_MAX, 3 );
$content = apply_block_hooks_to_content( $content, $post, $callback );
remove_filter( 'hooked_block_types', $suppress_blocks_from_insertion_before_and_after_wrapper_block, PHP_INT_MAX );
// Finally, we need to remove the temporary wrapper block.
$content = remove_serialized_parent_block( $content );
// If we wrapped the content in a `core/freeform` block, we also need to remove that.
if ( ! empty( $content_wrapped_in_classic_block ) ) {
/*
* We cannot simply use remove_serialized_parent_block() here,
* as that function assumes that the block wrapper is at the top level.
* However, there might now be a hooked block inserted next to it
* (as first or last child of the parent).
*/
$content = str_replace( $content_wrapped_in_classic_block, $original_content, $content );
}
return $content;
}
/**
* Accepts the serialized markup of a block and its inner blocks, and returns serialized markup of the inner blocks.
*
* @since 6.6.0
* @access private
*
* @param string $serialized_block The serialized markup of a block and its inner blocks.
* @return string The serialized markup of the inner blocks.
*/
function remove_serialized_parent_block( $serialized_block ) {
$start = strpos( $serialized_block, '-->' ) + strlen( '-->' );
$end = strrpos( $serialized_block, '<!--' );
return substr( $serialized_block, $start, $end - $start );
}
/**
* Accepts the serialized markup of a block and its inner blocks, and returns serialized markup of the wrapper block.
*
* @since 6.7.0
* @access private
*
* @see remove_serialized_parent_block()
*
* @param string $serialized_block The serialized markup of a block and its inner blocks.
* @return string The serialized markup of the wrapper block.
*/
function extract_serialized_parent_block( $serialized_block ) {
$start = strpos( $serialized_block, '-->' ) + strlen( '-->' );
$end = strrpos( $serialized_block, '<!--' );
return substr( $serialized_block, 0, $start ) . substr( $serialized_block, $end );
}
/**
* Updates the wp_postmeta with the list of ignored hooked blocks
* where the inner blocks are stored as post content.
*
* @since 6.6.0
* @since 6.8.0 Support non-`wp_navigation` post types.
* @access private
*
* @param stdClass $post Post object.
* @return stdClass The updated post object.
*/
function update_ignored_hooked_blocks_postmeta( $post ) {
/*
* In this scenario the user has likely tried to create a new post object via the REST API.
* In which case we won't have a post ID to work with and store meta against.
*/
if ( empty( $post->ID ) ) {
return $post;
}
/*
* Skip meta generation when consumers intentionally update specific fields
* and omit the content update.
*/
if ( ! isset( $post->post_content ) ) {
return $post;
}
/*
* Skip meta generation if post type is not set.
*/
if ( ! isset( $post->post_type ) ) {
return $post;
}
$attributes = array();
$ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true );
if ( ! empty( $ignored_hooked_blocks ) ) {
$ignored_hooked_blocks = json_decode( $ignored_hooked_blocks, true );
$attributes['metadata'] = array(
'ignoredHookedBlocks' => $ignored_hooked_blocks,
);
}
if ( 'wp_navigation' === $post->post_type ) {
$wrapper_block_type = 'core/navigation';
} elseif ( 'wp_block' === $post->post_type ) {
$wrapper_block_type = 'core/block';
} else {
$wrapper_block_type = 'core/post-content';
}
$markup = get_comment_delimited_block_content(
$wrapper_block_type,
$attributes,
$post->post_content
);
$existing_post = get_post( $post->ID );
// Merge the existing post object with the updated post object to pass to the block hooks algorithm for context.
$context = (object) array_merge( (array) $existing_post, (array) $post );
$context = new WP_Post( $context ); // Convert to WP_Post object.
$serialized_block = apply_block_hooks_to_content( $markup, $context, 'set_ignored_hooked_blocks_metadata' );
$root_block = parse_blocks( $serialized_block )[0];
$ignored_hooked_blocks = isset( $root_block['attrs']['metadata']['ignoredHookedBlocks'] )
? $root_block['attrs']['metadata']['ignoredHookedBlocks']
: array();
if ( ! empty( $ignored_hooked_blocks ) ) {
$existing_ignored_hooked_blocks = get_post_meta( $post->ID, '_wp_ignored_hooked_blocks', true );
if ( ! empty( $existing_ignored_hooked_blocks ) ) {
$existing_ignored_hooked_blocks = json_decode( $existing_ignored_hooked_blocks, true );
$ignored_hooked_blocks = array_unique( array_merge( $ignored_hooked_blocks, $existing_ignored_hooked_blocks ) );
}
if ( ! isset( $post->meta_input ) ) {
$post->meta_input = array();
}
$post->meta_input['_wp_ignored_hooked_blocks'] = json_encode( $ignored_hooked_blocks );
}
$post->post_content = remove_serialized_parent_block( $serialized_block );
return $post;
}
/**
* Returns the markup for blocks hooked to the given anchor block in a specific relative position and then
* adds a list of hooked block types to an anchor block's ignored hooked block types.
*
* This function is meant for internal use only.
*
* @since 6.6.0
* @access private
*
* @param array $parsed_anchor_block The anchor block, in parsed block array format.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param array $hooked_blocks An array of hooked block types, grouped by anchor block and relative position.
* @param WP_Block_Template|WP_Post|array $context The block template, template part, or pattern that the anchor block belongs to.
* @return string
*/
function insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata( &$parsed_anchor_block, $relative_position, $hooked_blocks, $context ) {
$markup = insert_hooked_blocks( $parsed_anchor_block, $relative_position, $hooked_blocks, $context );
$markup .= set_ignored_hooked_blocks_metadata( $parsed_anchor_block, $relative_position, $hooked_blocks, $context );
return $markup;
}
/**
* Hooks into the REST API response for the Posts endpoint and adds the first and last inner blocks.
*
* @since 6.6.0
* @since 6.8.0 Support non-`wp_navigation` post types.
*
* @param WP_REST_Response $response The response object.
* @param WP_Post $post Post object.
* @return WP_REST_Response The response object.
*/
function insert_hooked_blocks_into_rest_response( $response, $post ) {
if ( empty( $response->data['content']['raw'] ) ) {
return $response;
}
$response->data['content']['raw'] = apply_block_hooks_to_content_from_post_object(
$response->data['content']['raw'],
$post,
'insert_hooked_blocks_and_set_ignored_hooked_blocks_metadata'
);
// If the rendered content was previously empty, we leave it like that.
if ( empty( $response->data['content']['rendered'] ) ) {
return $response;
}
// `apply_block_hooks_to_content` is called above. Ensure it is not called again as a filter.
$priority = has_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object' );
if ( false !== $priority ) {
remove_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object', $priority );
}
/** This filter is documented in wp-includes/post-template.php */
$response->data['content']['rendered'] = apply_filters(
'the_content',
$response->data['content']['raw']
);
// Restore the filter if it was set initially.
if ( false !== $priority ) {
add_filter( 'the_content', 'apply_block_hooks_to_content_from_post_object', $priority );
}
return $response;
}
/**
* Returns a function that injects the theme attribute into, and hooked blocks before, a given block.
*
* The returned function can be used as `$pre_callback` argument to `traverse_and_serialize_block(s)`,
* where it will inject the `theme` attribute into all Template Part blocks, and prepend the markup for
* any blocks hooked `before` the given block and as its parent's `first_child`, respectively.
*
* This function is meant for internal use only.
*
* @since 6.4.0
* @since 6.5.0 Added $callback argument.
* @access private
*
* @param array $hooked_blocks An array of blocks hooked to another given block.
* @param WP_Block_Template|WP_Post|array $context A block template, template part, post object,
* or pattern that the blocks belong to.
* @param callable $callback A function that will be called for each block to generate
* the markup for a given list of blocks that are hooked to it.
* Default: 'insert_hooked_blocks'.
* @return callable A function that returns the serialized markup for the given block,
* including the markup for any hooked blocks before it.
*/
function make_before_block_visitor( $hooked_blocks, $context, $callback = 'insert_hooked_blocks' ) {
/**
* Injects hooked blocks before the given block, injects the `theme` attribute into Template Part blocks, and returns the serialized markup.
*
* If the current block is a Template Part block, inject the `theme` attribute.
* Furthermore, prepend the markup for any blocks hooked `before` the given block and as its parent's
* `first_child`, respectively, to the serialized markup for the given block.
*
* @param array $block The block to inject the theme attribute into, and hooked blocks before. Passed by reference.
* @param array $parent_block The parent block of the given block. Passed by reference. Default null.
* @param array $prev The previous sibling block of the given block. Default null.
* @return string The serialized markup for the given block, with the markup for any hooked blocks prepended to it.
*/
return function ( &$block, &$parent_block = null, $prev = null ) use ( $hooked_blocks, $context, $callback ) {
_inject_theme_attribute_in_template_part_block( $block );
$markup = '';
if ( $parent_block && ! $prev ) {
// Candidate for first-child insertion.
$markup .= call_user_func_array(
$callback,
array( &$parent_block, 'first_child', $hooked_blocks, $context )
);
}
$markup .= call_user_func_array(
$callback,
array( &$block, 'before', $hooked_blocks, $context )
);
return $markup;
};
}
/**
* Returns a function that injects the hooked blocks after a given block.
*
* The returned function can be used as `$post_callback` argument to `traverse_and_serialize_block(s)`,
* where it will append the markup for any blocks hooked `after` the given block and as its parent's
* `last_child`, respectively.
*
* This function is meant for internal use only.
*
* @since 6.4.0
* @since 6.5.0 Added $callback argument.
* @access private
*
* @param array $hooked_blocks An array of blocks hooked to another block.
* @param WP_Block_Template|WP_Post|array $context A block template, template part, post object,
* or pattern that the blocks belong to.
* @param callable $callback A function that will be called for each block to generate
* the markup for a given list of blocks that are hooked to it.
* Default: 'insert_hooked_blocks'.
* @return callable A function that returns the serialized markup for the given block,
* including the markup for any hooked blocks after it.
*/
function make_after_block_visitor( $hooked_blocks, $context, $callback = 'insert_hooked_blocks' ) {
/**
* Injects hooked blocks after the given block, and returns the serialized markup.
*
* Append the markup for any blocks hooked `after` the given block and as its parent's
* `last_child`, respectively, to the serialized markup for the given block.
*
* @param array $block The block to inject the hooked blocks after. Passed by reference.
* @param array $parent_block The parent block of the given block. Passed by reference. Default null.
* @param array $next The next sibling block of the given block. Default null.
* @return string The serialized markup for the given block, with the markup for any hooked blocks appended to it.
*/
return function ( &$block, &$parent_block = null, $next = null ) use ( $hooked_blocks, $context, $callback ) {
$markup = call_user_func_array(
$callback,
array( &$block, 'after', $hooked_blocks, $context )
);
if ( $parent_block && ! $next ) {
// Candidate for last-child insertion.
$markup .= call_user_func_array(
$callback,
array( &$parent_block, 'last_child', $hooked_blocks, $context )
);
}
return $markup;
};
}
/**
* Given an array of attributes, returns a string in the serialized attributes
* format prepared for post content.
*
* The serialized result is a JSON-encoded string, with unicode escape sequence
* substitution for characters which might otherwise interfere with embedding
* the result in an HTML comment.
*
* This function must produce output that remains in sync with the output of
* the serializeAttributes JavaScript function in the block editor in order
* to ensure consistent operation between PHP and JavaScript.
*
* @since 5.3.1
*
* @param array $block_attributes Attributes object.
* @return string Serialized attributes.
*/
function serialize_block_attributes( $block_attributes ) {
$encoded_attributes = wp_json_encode( $block_attributes, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE );
$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
// Regex: /\\"/
$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );
return $encoded_attributes;
}
/**
* Returns the block name to use for serialization. This will remove the default
* "core/" namespace from a block name.
*
* @since 5.3.1
*
* @param string|null $block_name Optional. Original block name. Null if the block name is unknown,
* e.g. Classic blocks have their name set to null. Default null.
* @return string Block name to use for serialization.
*/
function strip_core_block_namespace( $block_name = null ) {
if ( is_string( $block_name ) && str_starts_with( $block_name, 'core/' ) ) {
return substr( $block_name, 5 );
}
return $block_name;
}
/**
* Returns the content of a block, including comment delimiters.
*
* @since 5.3.1
*
* @param string|null $block_name Block name. Null if the block name is unknown,
* e.g. Classic blocks have their name set to null.
* @param array $block_attributes Block attributes.
* @param string $block_content Block save content.
* @return string Comment-delimited block content.
*/
function get_comment_delimited_block_content( $block_name, $block_attributes, $block_content ) {
if ( is_null( $block_name ) ) {
return $block_content;
}
$serialized_block_name = strip_core_block_namespace( $block_name );
$serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' ';
if ( empty( $block_content ) ) {
return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes );
}
return sprintf(
'<!-- wp:%s %s-->%s<!-- /wp:%s -->',
$serialized_block_name,
$serialized_attributes,
$block_content,
$serialized_block_name
);
}
/**
* Returns the content of a block, including comment delimiters, serializing all
* attributes from the given parsed block.
*
* This should be used when preparing a block to be saved to post content.
* Prefer `render_block` when preparing a block for display. Unlike
* `render_block`, this does not evaluate a block's `render_callback`, and will
* instead preserve the markup as parsed.
*
* @since 5.3.1
*
* @param array $block {
* An associative array of a single parsed block object. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @return string String of rendered HTML.
*/
function serialize_block( $block ) {
$block_content = '';
$index = 0;
foreach ( $block['innerContent'] as $chunk ) {
$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
}
if ( ! is_array( $block['attrs'] ) ) {
$block['attrs'] = array();
}
return get_comment_delimited_block_content(
$block['blockName'],
$block['attrs'],
$block_content
);
}
/**
* Returns a joined string of the aggregate serialization of the given
* parsed blocks.
*
* @since 5.3.1
*
* @param array[] $blocks {
* Array of block structures.
*
* @type array ...$0 {
* An associative array of a single parsed block object. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* }
* @return string String of rendered HTML.
*/
function serialize_blocks( $blocks ) {
return implode( '', array_map( 'serialize_block', $blocks ) );
}
/**
* Traverses a parsed block tree and applies callbacks before and after serializing it.
*
* Recursively traverses the block and its inner blocks and applies the two callbacks provided as
* arguments, the first one before serializing the block, and the second one after serializing it.
* If either callback returns a string value, it will be prepended and appended to the serialized
* block markup, respectively.
*
* The callbacks will receive a reference to the current block as their first argument, so that they
* can also modify it, and the current block's parent block as second argument. Finally, the
* `$pre_callback` receives the previous block, whereas the `$post_callback` receives
* the next block as third argument.
*
* Serialized blocks are returned including comment delimiters, and with all attributes serialized.
*
* This function should be used when there is a need to modify the saved block, or to inject markup
* into the return value. Prefer `serialize_block` when preparing a block to be saved to post content.
*
* This function is meant for internal use only.
*
* @since 6.4.0
* @access private
*
* @see serialize_block()
*
* @param array $block An associative array of a single parsed block object. See WP_Block_Parser_Block.
* @param callable $pre_callback Callback to run on each block in the tree before it is traversed and serialized.
* It is called with the following arguments: &$block, $parent_block, $previous_block.
* Its string return value will be prepended to the serialized block markup.
* @param callable $post_callback Callback to run on each block in the tree after it is traversed and serialized.
* It is called with the following arguments: &$block, $parent_block, $next_block.
* Its string return value will be appended to the serialized block markup.
* @return string Serialized block markup.
*/
function traverse_and_serialize_block( $block, $pre_callback = null, $post_callback = null ) {
$block_content = '';
$block_index = 0;
foreach ( $block['innerContent'] as $chunk ) {
if ( is_string( $chunk ) ) {
$block_content .= $chunk;
} else {
$inner_block = $block['innerBlocks'][ $block_index ];
if ( is_callable( $pre_callback ) ) {
$prev = 0 === $block_index
? null
: $block['innerBlocks'][ $block_index - 1 ];
$block_content .= call_user_func_array(
$pre_callback,
array( &$inner_block, &$block, $prev )
);
}
if ( is_callable( $post_callback ) ) {
$next = count( $block['innerBlocks'] ) - 1 === $block_index
? null
: $block['innerBlocks'][ $block_index + 1 ];
$post_markup = call_user_func_array(
$post_callback,
array( &$inner_block, &$block, $next )
);
}
$block_content .= traverse_and_serialize_block( $inner_block, $pre_callback, $post_callback );
$block_content .= isset( $post_markup ) ? $post_markup : '';
++$block_index;
}
}
if ( ! is_array( $block['attrs'] ) ) {
$block['attrs'] = array();
}
return get_comment_delimited_block_content(
$block['blockName'],
$block['attrs'],
$block_content
);
}
/**
* Replaces patterns in a block tree with their content.
*
* @since 6.6.0
*
* @param array $blocks An array blocks.
*
* @return array An array of blocks with patterns replaced by their content.
*/
function resolve_pattern_blocks( $blocks ) {
static $inner_content;
// Keep track of seen references to avoid infinite loops.
static $seen_refs = array();
$i = 0;
while ( $i < count( $blocks ) ) {
if ( 'core/pattern' === $blocks[ $i ]['blockName'] ) {
$attrs = $blocks[ $i ]['attrs'];
if ( empty( $attrs['slug'] ) ) {
++$i;
continue;
}
$slug = $attrs['slug'];
if ( isset( $seen_refs[ $slug ] ) ) {
// Skip recursive patterns.
array_splice( $blocks, $i, 1 );
continue;
}
$registry = WP_Block_Patterns_Registry::get_instance();
$pattern = $registry->get_registered( $slug );
// Skip unknown patterns.
if ( ! $pattern ) {
++$i;
continue;
}
$blocks_to_insert = parse_blocks( $pattern['content'] );
$seen_refs[ $slug ] = true;
$prev_inner_content = $inner_content;
$inner_content = null;
$blocks_to_insert = resolve_pattern_blocks( $blocks_to_insert );
$inner_content = $prev_inner_content;
unset( $seen_refs[ $slug ] );
array_splice( $blocks, $i, 1, $blocks_to_insert );
// If we have inner content, we need to insert nulls in the
// inner content array, otherwise serialize_blocks will skip
// blocks.
if ( $inner_content ) {
$null_indices = array_keys( $inner_content, null, true );
$content_index = $null_indices[ $i ];
$nulls = array_fill( 0, count( $blocks_to_insert ), null );
array_splice( $inner_content, $content_index, 1, $nulls );
}
// Skip inserted blocks.
$i += count( $blocks_to_insert );
} else {
if ( ! empty( $blocks[ $i ]['innerBlocks'] ) ) {
$prev_inner_content = $inner_content;
$inner_content = $blocks[ $i ]['innerContent'];
$blocks[ $i ]['innerBlocks'] = resolve_pattern_blocks(
$blocks[ $i ]['innerBlocks']
);
$blocks[ $i ]['innerContent'] = $inner_content;
$inner_content = $prev_inner_content;
}
++$i;
}
}
return $blocks;
}
/**
* Given an array of parsed block trees, applies callbacks before and after serializing them and
* returns their concatenated output.
*
* Recursively traverses the blocks and their inner blocks and applies the two callbacks provided as
* arguments, the first one before serializing a block, and the second one after serializing.
* If either callback returns a string value, it will be prepended and appended to the serialized
* block markup, respectively.
*
* The callbacks will receive a reference to the current block as their first argument, so that they
* can also modify it, and the current block's parent block as second argument. Finally, the
* `$pre_callback` receives the previous block, whereas the `$post_callback` receives
* the next block as third argument.
*
* Serialized blocks are returned including comment delimiters, and with all attributes serialized.
*
* This function should be used when there is a need to modify the saved blocks, or to inject markup
* into the return value. Prefer `serialize_blocks` when preparing blocks to be saved to post content.
*
* This function is meant for internal use only.
*
* @since 6.4.0
* @access private
*
* @see serialize_blocks()
*
* @param array[] $blocks An array of parsed blocks. See WP_Block_Parser_Block.
* @param callable $pre_callback Callback to run on each block in the tree before it is traversed and serialized.
* It is called with the following arguments: &$block, $parent_block, $previous_block.
* Its string return value will be prepended to the serialized block markup.
* @param callable $post_callback Callback to run on each block in the tree after it is traversed and serialized.
* It is called with the following arguments: &$block, $parent_block, $next_block.
* Its string return value will be appended to the serialized block markup.
* @return string Serialized block markup.
*/
function traverse_and_serialize_blocks( $blocks, $pre_callback = null, $post_callback = null ) {
$result = '';
$parent_block = null; // At the top level, there is no parent block to pass to the callbacks; yet the callbacks expect a reference.
$pre_callback_is_callable = is_callable( $pre_callback );
$post_callback_is_callable = is_callable( $post_callback );
foreach ( $blocks as $index => $block ) {
if ( $pre_callback_is_callable ) {
$prev = 0 === $index
? null
: $blocks[ $index - 1 ];
$result .= call_user_func_array(
$pre_callback,
array( &$block, &$parent_block, $prev )
);
}
if ( $post_callback_is_callable ) {
$next = count( $blocks ) - 1 === $index
? null
: $blocks[ $index + 1 ];
$post_markup = call_user_func_array(
$post_callback,
array( &$block, &$parent_block, $next )
);
}
$result .= traverse_and_serialize_block( $block, $pre_callback, $post_callback );
$result .= isset( $post_markup ) ? $post_markup : '';
}
return $result;
}
/**
* Filters and sanitizes block content to remove non-allowable HTML
* from parsed block attribute values.
*
* @since 5.3.1
*
* @param string $text Text that may contain block content.
* @param array[]|string $allowed_html Optional. An array of allowed HTML elements and attributes,
* or a context name such as 'post'. See wp_kses_allowed_html()
* for the list of accepted context names. Default 'post'.
* @param string[] $allowed_protocols Optional. Array of allowed URL protocols.
* Defaults to the result of wp_allowed_protocols().
* @return string The filtered and sanitized content result.
*/
function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
$result = '';
if ( str_contains( $text, '<!--' ) && str_contains( $text, '--->' ) ) {
$text = preg_replace_callback( '%<!--(.*?)--->%', '_filter_block_content_callback', $text );
}
$blocks = parse_blocks( $text );
foreach ( $blocks as $block ) {
$block = filter_block_kses( $block, $allowed_html, $allowed_protocols );
$result .= serialize_block( $block );
}
return $result;
}
/**
* Callback used for regular expression replacement in filter_block_content().
*
* @since 6.2.1
* @access private
*
* @param array $matches Array of preg_replace_callback matches.
* @return string Replacement string.
*/
function _filter_block_content_callback( $matches ) {
return '<!--' . rtrim( $matches[1], '-' ) . '-->';
}
/**
* Filters and sanitizes a parsed block to remove non-allowable HTML
* from block attribute values.
*
* @since 5.3.1
*
* @param WP_Block_Parser_Block $block The parsed block object.
* @param array[]|string $allowed_html An array of allowed HTML elements and attributes,
* or a context name such as 'post'. See wp_kses_allowed_html()
* for the list of accepted context names.
* @param string[] $allowed_protocols Optional. Array of allowed URL protocols.
* Defaults to the result of wp_allowed_protocols().
* @return array The filtered and sanitized block object result.
*/
function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) {
$block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols, $block );
if ( is_array( $block['innerBlocks'] ) ) {
foreach ( $block['innerBlocks'] as $i => $inner_block ) {
$block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols );
}
}
return $block;
}
/**
* Filters and sanitizes a parsed block attribute value to remove
* non-allowable HTML.
*
* @since 5.3.1
* @since 6.5.5 Added the `$block_context` parameter.
*
* @param string[]|string $value The attribute value to filter.
* @param array[]|string $allowed_html An array of allowed HTML elements and attributes,
* or a context name such as 'post'. See wp_kses_allowed_html()
* for the list of accepted context names.
* @param string[] $allowed_protocols Optional. Array of allowed URL protocols.
* Defaults to the result of wp_allowed_protocols().
* @param array $block_context Optional. The block the attribute belongs to, in parsed block array format.
* @return string[]|string The filtered and sanitized result.
*/
function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array(), $block_context = null ) {
if ( is_array( $value ) ) {
foreach ( $value as $key => $inner_value ) {
$filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols, $block_context );
$filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols, $block_context );
if ( isset( $block_context['blockName'] ) && 'core/template-part' === $block_context['blockName'] ) {
$filtered_value = filter_block_core_template_part_attributes( $filtered_value, $filtered_key, $allowed_html );
}
if ( $filtered_key !== $key ) {
unset( $value[ $key ] );
}
$value[ $filtered_key ] = $filtered_value;
}
} elseif ( is_string( $value ) ) {
return wp_kses( $value, $allowed_html, $allowed_protocols );
}
return $value;
}
/**
* Sanitizes the value of the Template Part block's `tagName` attribute.
*
* @since 6.5.5
*
* @param string $attribute_value The attribute value to filter.
* @param string $attribute_name The attribute name.
* @param array[]|string $allowed_html An array of allowed HTML elements and attributes,
* or a context name such as 'post'. See wp_kses_allowed_html()
* for the list of accepted context names.
* @return string The sanitized attribute value.
*/
function filter_block_core_template_part_attributes( $attribute_value, $attribute_name, $allowed_html ) {
if ( empty( $attribute_value ) || 'tagName' !== $attribute_name ) {
return $attribute_value;
}
if ( ! is_array( $allowed_html ) ) {
$allowed_html = wp_kses_allowed_html( $allowed_html );
}
return isset( $allowed_html[ $attribute_value ] ) ? $attribute_value : '';
}
/**
* Parses blocks out of a content string, and renders those appropriate for the excerpt.
*
* As the excerpt should be a small string of text relevant to the full post content,
* this function renders the blocks that are most likely to contain such text.
*
* @since 5.0.0
*
* @param string $content The content to parse.
* @return string The parsed and filtered content.
*/
function excerpt_remove_blocks( $content ) {
if ( ! has_blocks( $content ) ) {
return $content;
}
$allowed_inner_blocks = array(
// Classic blocks have their blockName set to null.
null,
'core/freeform',
'core/heading',
'core/html',
'core/list',
'core/media-text',
'core/paragraph',
'core/preformatted',
'core/pullquote',
'core/quote',
'core/table',
'core/verse',
);
$allowed_wrapper_blocks = array(
'core/columns',
'core/column',
'core/group',
);
/**
* Filters the list of blocks that can be used as wrapper blocks, allowing
* excerpts to be generated from the `innerBlocks` of these wrappers.
*
* @since 5.8.0
*
* @param string[] $allowed_wrapper_blocks The list of names of allowed wrapper blocks.
*/
$allowed_wrapper_blocks = apply_filters( 'excerpt_allowed_wrapper_blocks', $allowed_wrapper_blocks );
$allowed_blocks = array_merge( $allowed_inner_blocks, $allowed_wrapper_blocks );
/**
* Filters the list of blocks that can contribute to the excerpt.
*
* If a dynamic block is added to this list, it must not generate another
* excerpt, as this will cause an infinite loop to occur.
*
* @since 5.0.0
*
* @param string[] $allowed_blocks The list of names of allowed blocks.
*/
$allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks );
$blocks = parse_blocks( $content );
$output = '';
foreach ( $blocks as $block ) {
if ( in_array( $block['blockName'], $allowed_blocks, true ) ) {
if ( ! empty( $block['innerBlocks'] ) ) {
if ( in_array( $block['blockName'], $allowed_wrapper_blocks, true ) ) {
$output .= _excerpt_render_inner_blocks( $block, $allowed_blocks );
continue;
}
// Skip the block if it has disallowed or nested inner blocks.
foreach ( $block['innerBlocks'] as $inner_block ) {
if (
! in_array( $inner_block['blockName'], $allowed_inner_blocks, true ) ||
! empty( $inner_block['innerBlocks'] )
) {
continue 2;
}
}
}
$output .= render_block( $block );
}
}
return $output;
}
/**
* Parses footnotes markup out of a content string,
* and renders those appropriate for the excerpt.
*
* @since 6.3.0
*
* @param string $content The content to parse.
* @return string The parsed and filtered content.
*/
function excerpt_remove_footnotes( $content ) {
if ( ! str_contains( $content, 'data-fn=' ) ) {
return $content;
}
return preg_replace(
'_<sup data-fn="[^"]+" class="[^"]+">\s*<a href="[^"]+" id="[^"]+">\d+</a>\s*</sup>_',
'',
$content
);
}
/**
* Renders inner blocks from the allowed wrapper blocks
* for generating an excerpt.
*
* @since 5.8.0
* @access private
*
* @param array $parsed_block The parsed block.
* @param array $allowed_blocks The list of allowed inner blocks.
* @return string The rendered inner blocks.
*/
function _excerpt_render_inner_blocks( $parsed_block, $allowed_blocks ) {
$output = '';
foreach ( $parsed_block['innerBlocks'] as $inner_block ) {
if ( ! in_array( $inner_block['blockName'], $allowed_blocks, true ) ) {
continue;
}
if ( empty( $inner_block['innerBlocks'] ) ) {
$output .= render_block( $inner_block );
} else {
$output .= _excerpt_render_inner_blocks( $inner_block, $allowed_blocks );
}
}
return $output;
}
/**
* Renders a single block into a HTML string.
*
* @since 5.0.0
*
* @global WP_Post $post The post to edit.
*
* @param array $parsed_block {
* An associative array of the block being rendered. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @return string String of rendered HTML.
*/
function render_block( $parsed_block ) {
global $post;
$parent_block = null;
/**
* Allows render_block() to be short-circuited, by returning a non-null value.
*
* @since 5.1.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param string|null $pre_render The pre-rendered content. Default null.
* @param array $parsed_block {
* An associative array of the block being rendered. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$pre_render = apply_filters( 'pre_render_block', null, $parsed_block, $parent_block );
if ( ! is_null( $pre_render ) ) {
return $pre_render;
}
$source_block = $parsed_block;
/**
* Filters the block being rendered in render_block(), before it's processed.
*
* @since 5.1.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param array $parsed_block {
* An associative array of the block being rendered. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @param array $source_block {
* An un-modified copy of `$parsed_block`, as it appeared in the source content.
* See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$parsed_block = apply_filters( 'render_block_data', $parsed_block, $source_block, $parent_block );
$context = array();
if ( $post instanceof WP_Post ) {
$context['postId'] = $post->ID;
/*
* The `postType` context is largely unnecessary server-side, since the ID
* is usually sufficient on its own. That being said, since a block's
* manifest is expected to be shared between the server and the client,
* it should be included to consistently fulfill the expectation.
*/
$context['postType'] = $post->post_type;
}
/**
* Filters the default context provided to a rendered block.
*
* @since 5.5.0
* @since 5.9.0 The `$parent_block` parameter was added.
*
* @param array $context Default context.
* @param array $parsed_block {
* An associative array of the block being rendered. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
$context = apply_filters( 'render_block_context', $context, $parsed_block, $parent_block );
$block = new WP_Block( $parsed_block, $context );
return $block->render();
}
/**
* Parses blocks out of a content string.
*
* @since 5.0.0
*
* @param string $content Post content.
* @return array[] {
* Array of block structures.
*
* @type array ...$0 {
* An associative array of a single parsed block object. See WP_Block_Parser_Block.
*
* @type string $blockName Name of block.
* @type array $attrs Attributes from block comment delimiters.
* @type array[] $innerBlocks List of inner blocks. An array of arrays that
* have the same structure as this one.
* @type string $innerHTML HTML from inside block comment delimiters.
* @type array $innerContent List of string fragments and null markers where
* inner blocks were found.
* }
* }
*/
function parse_blocks( $content ) {
/**
* Filter to allow plugins to replace the server-side block parser.
*
* @since 5.0.0
*
* @param string $parser_class Name of block parser class.
*/
$parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' );
$parser = new $parser_class();
return $parser->parse( $content );
}
/**
* Parses dynamic blocks out of `post_content` and re-renders them.
*
* @since 5.0.0
*
* @param string $content Post content.
* @return string Updated post content.
*/
function do_blocks( $content ) {
$blocks = parse_blocks( $content );
$top_level_block_count = count( $blocks );
$output = '';
/**
* Parsed blocks consist of a list of top-level blocks. Those top-level
* blocks may themselves contain nested inner blocks. However, every
* top-level block is rendered independently, meaning there are no data
* dependencies between them.
*
* Ideally, therefore, the parser would only need to parse one complete
* top-level block at a time, render it, and move on. Unfortunately, this
* is not possible with {@see \parse_blocks()} because it must parse the
* entire given document at once.
*
* While the current implementation prevents this optimization, it’s still
* possible to reduce the peak memory use when calls to `render_block()`
* on those top-level blocks are memory-heavy (which many of them are).
* By setting each parsed block to `NULL` after rendering it, any memory
* allocated during the render will be freed and reused for the next block.
* Before making this change, that memory was retained and would lead to
* out-of-memory crashes for certain posts that now run with this change.
*/
for ( $i = 0; $i < $top_level_block_count; $i++ ) {
$output .= render_block( $blocks[ $i ] );
$blocks[ $i ] = null;
}
// If there are blocks in this content, we shouldn't run wpautop() on it later.
$priority = has_filter( 'the_content', 'wpautop' );
if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) {
remove_filter( 'the_content', 'wpautop', $priority );
add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
}
return $output;
}
/**
* If do_blocks() needs to remove wpautop() from the `the_content` filter, this re-adds it afterwards,
* for subsequent `the_content` usage.
*
* @since 5.0.0
* @access private
*
* @param string $content The post content running through this filter.
* @return string The unmodified content.
*/
function _restore_wpautop_hook( $content ) {
$current_priority = has_filter( 'the_content', '_restore_wpautop_hook' );
add_filter( 'the_content', 'wpautop', $current_priority - 1 );
remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );
return $content;
}
/**
* Returns the current version of the block format that the content string is using.
*
* If the string doesn't contain blocks, it returns 0.
*
* @since 5.0.0
*
* @param string $content Content to test.
* @return int The block format version is 1 if the content contains one or more blocks, 0 otherwise.
*/
function block_version( $content ) {
return has_blocks( $content ) ? 1 : 0;
}
/**
* Registers a new block style.
*
* @since 5.3.0
* @since 6.6.0 Added support for registering styles for multiple block types.
*
* @link https://developer.wordpress.org/block-editor/reference-guides/block-api/block-styles/
*
* @param string|string[] $block_name Block type name including namespace or array of namespaced block type names.
* @param array $style_properties Array containing the properties of the style name, label,
* style_handle (name of the stylesheet to be enqueued),
* inline_style (string containing the CSS to be added),
* style_data (theme.json-like array to generate CSS from).
* See WP_Block_Styles_Registry::register().
* @return bool True if the block style was registered with success and false otherwise.
*/
function register_block_style( $block_name, $style_properties ) {
return WP_Block_Styles_Registry::get_instance()->register( $block_name, $style_properties );
}
/**
* Unregisters a block style.
*
* @since 5.3.0
*
* @param string $block_name Block type name including namespace.
* @param string $block_style_name Block style name.
* @return bool True if the block style was unregistered with success and false otherwise.
*/
function unregister_block_style( $block_name, $block_style_name ) {
return WP_Block_Styles_Registry::get_instance()->unregister( $block_name, $block_style_name );
}
/**
* Checks whether the current block type supports the feature requested.
*
* @since 5.8.0
* @since 6.4.0 The `$feature` parameter now supports a string.
*
* @param WP_Block_Type $block_type Block type to check for support.
* @param string|array $feature Feature slug, or path to a specific feature to check support for.
* @param mixed $default_value Optional. Fallback value for feature support. Default false.
* @return bool Whether the feature is supported.
*/
function block_has_support( $block_type, $feature, $default_value = false ) {
$block_support = $default_value;
if ( $block_type instanceof WP_Block_Type ) {
if ( is_array( $feature ) && count( $feature ) === 1 ) {
$feature = $feature[0];
}
if ( is_array( $feature ) ) {
$block_support = _wp_array_get( $block_type->supports, $feature, $default_value );
} elseif ( isset( $block_type->supports[ $feature ] ) ) {
$block_support = $block_type->supports[ $feature ];
}
}
return true === $block_support || is_array( $block_support );
}
/**
* Converts typography keys declared under `supports.*` to `supports.typography.*`.
*
* Displays a `_doing_it_wrong()` notice when a block using the older format is detected.
*
* @since 5.8.0
*
* @param array $metadata Metadata for registering a block type.
* @return array Filtered metadata for registering a block type.
*/
function wp_migrate_old_typography_shape( $metadata ) {
if ( ! isset( $metadata['supports'] ) ) {
return $metadata;
}
$typography_keys = array(
'__experimentalFontFamily',
'__experimentalFontStyle',
'__experimentalFontWeight',
'__experimentalLetterSpacing',
'__experimentalTextDecoration',
'__experimentalTextTransform',
'fontSize',
'lineHeight',
);
foreach ( $typography_keys as $typography_key ) {
$support_for_key = isset( $metadata['supports'][ $typography_key ] ) ? $metadata['supports'][ $typography_key ] : null;
if ( null !== $support_for_key ) {
_doing_it_wrong(
'register_block_type_from_metadata()',
sprintf(
/* translators: 1: Block type, 2: Typography supports key, e.g: fontSize, lineHeight, etc. 3: block.json, 4: Old metadata key, 5: New metadata key. */
__( 'Block "%1$s" is declaring %2$s support in %3$s file under %4$s. %2$s support is now declared under %5$s.' ),
$metadata['name'],
"<code>$typography_key</code>",
'<code>block.json</code>',
"<code>supports.$typography_key</code>",
"<code>supports.typography.$typography_key</code>"
),
'5.8.0'
);
_wp_array_set( $metadata['supports'], array( 'typography', $typography_key ), $support_for_key );
unset( $metadata['supports'][ $typography_key ] );
}
}
return $metadata;
}
/**
* Helper function that constructs a WP_Query args array from
* a `Query` block properties.
*
* It's used in Query Loop, Query Pagination Numbers and Query Pagination Next blocks.
*
* @since 5.8.0
* @since 6.1.0 Added `query_loop_block_query_vars` filter and `parents` support in query.
* @since 6.7.0 Added support for the `format` property in query.
*
* @param WP_Block $block Block instance.
* @param int $page Current query's page.
*
* @return array Returns the constructed WP_Query arguments.
*/
function build_query_vars_from_query_block( $block, $page ) {
$query = array(
'post_type' => 'post',
'order' => 'DESC',
'orderby' => 'date',
'post__not_in' => array(),
'tax_query' => array(),
);
if ( isset( $block->context['query'] ) ) {
if ( ! empty( $block->context['query']['postType'] ) ) {
$post_type_param = $block->context['query']['postType'];
if ( is_post_type_viewable( $post_type_param ) ) {
$query['post_type'] = $post_type_param;
}
}
if ( isset( $block->context['query']['sticky'] ) && ! empty( $block->context['query']['sticky'] ) ) {
$sticky = get_option( 'sticky_posts' );
if ( 'only' === $block->context['query']['sticky'] ) {
/*
* Passing an empty array to post__in will return have_posts() as true (and all posts will be returned).
* Logic should be used before hand to determine if WP_Query should be used in the event that the array
* being passed to post__in is empty.
*
* @see https://core.trac.wordpress.org/ticket/28099
*/
$query['post__in'] = ! empty( $sticky ) ? $sticky : array( 0 );
$query['ignore_sticky_posts'] = 1;
} elseif ( 'exclude' === $block->context['query']['sticky'] ) {
$query['post__not_in'] = array_merge( $query['post__not_in'], $sticky );
} elseif ( 'ignore' === $block->context['query']['sticky'] ) {
$query['ignore_sticky_posts'] = 1;
}
}
if ( ! empty( $block->context['query']['exclude'] ) ) {
$excluded_post_ids = array_map( 'intval', $block->context['query']['exclude'] );
$excluded_post_ids = array_filter( $excluded_post_ids );
$query['post__not_in'] = array_merge( $query['post__not_in'], $excluded_post_ids );
}
if (
isset( $block->context['query']['perPage'] ) &&
is_numeric( $block->context['query']['perPage'] )
) {
$per_page = absint( $block->context['query']['perPage'] );
$offset = 0;
if (
isset( $block->context['query']['offset'] ) &&
is_numeric( $block->context['query']['offset'] )
) {
$offset = absint( $block->context['query']['offset'] );
}
$query['offset'] = ( $per_page * ( $page - 1 ) ) + $offset;
$query['posts_per_page'] = $per_page;
}
// Migrate `categoryIds` and `tagIds` to `tax_query` for backwards compatibility.
if ( ! empty( $block->context['query']['categoryIds'] ) || ! empty( $block->context['query']['tagIds'] ) ) {
$tax_query_back_compat = array();
if ( ! empty( $block->context['query']['categoryIds'] ) ) {
$tax_query_back_compat[] = array(
'taxonomy' => 'category',
'terms' => array_filter( array_map( 'intval', $block->context['query']['categoryIds'] ) ),
'include_children' => false,
);
}
if ( ! empty( $block->context['query']['tagIds'] ) ) {
$tax_query_back_compat[] = array(
'taxonomy' => 'post_tag',
'terms' => array_filter( array_map( 'intval', $block->context['query']['tagIds'] ) ),
'include_children' => false,
);
}
$query['tax_query'] = array_merge( $query['tax_query'], $tax_query_back_compat );
}
if ( ! empty( $block->context['query']['taxQuery'] ) ) {
$tax_query = array();
foreach ( $block->context['query']['taxQuery'] as $taxonomy => $terms ) {
if ( is_taxonomy_viewable( $taxonomy ) && ! empty( $terms ) ) {
$tax_query[] = array(
'taxonomy' => $taxonomy,
'terms' => array_filter( array_map( 'intval', $terms ) ),
'include_children' => false,
);
}
}
$query['tax_query'] = array_merge( $query['tax_query'], $tax_query );
}
if ( ! empty( $block->context['query']['format'] ) && is_array( $block->context['query']['format'] ) ) {
$formats = $block->context['query']['format'];
/*
* Validate that the format is either `standard` or a supported post format.
* - First, add `standard` to the array of valid formats.
* - Then, remove any invalid formats.
*/
$valid_formats = array_merge( array( 'standard' ), get_post_format_slugs() );
$formats = array_intersect( $formats, $valid_formats );
/*
* The relation needs to be set to `OR` since the request can contain
* two separate conditions. The user may be querying for items that have
* either the `standard` format or a specific format.
*/
$formats_query = array( 'relation' => 'OR' );
/*
* The default post format, `standard`, is not stored in the database.
* If `standard` is part of the request, the query needs to exclude all post items that
* have a format assigned.
*/
if ( in_array( 'standard', $formats, true ) ) {
$formats_query[] = array(
'taxonomy' => 'post_format',
'field' => 'slug',
'operator' => 'NOT EXISTS',
);
// Remove the `standard` format, since it cannot be queried.
unset( $formats[ array_search( 'standard', $formats, true ) ] );
}
// Add any remaining formats to the formats query.
if ( ! empty( $formats ) ) {
// Add the `post-format-` prefix.
$terms = array_map(
static function ( $format ) {
return "post-format-$format";
},
$formats
);
$formats_query[] = array(
'taxonomy' => 'post_format',
'field' => 'slug',
'terms' => $terms,
'operator' => 'IN',
);
}
/*
* Add `$formats_query` to `$query`, as long as it contains more than one key:
* If `$formats_query` only contains the initial `relation` key, there are no valid formats to query,
* and the query should not be modified.
*/
if ( count( $formats_query ) > 1 ) {
// Enable filtering by both post formats and other taxonomies by combining them with `AND`.
if ( empty( $query['tax_query'] ) ) {
$query['tax_query'] = $formats_query;
} else {
$query['tax_query'] = array(
'relation' => 'AND',
$query['tax_query'],
$formats_query,
);
}
}
}
if (
isset( $block->context['query']['order'] ) &&
in_array( strtoupper( $block->context['query']['order'] ), array( 'ASC', 'DESC' ), true )
) {
$query['order'] = strtoupper( $block->context['query']['order'] );
}
if ( isset( $block->context['query']['orderBy'] ) ) {
$query['orderby'] = $block->context['query']['orderBy'];
}
if (
isset( $block->context['query']['author'] )
) {
if ( is_array( $block->context['query']['author'] ) ) {
$query['author__in'] = array_filter( array_map( 'intval', $block->context['query']['author'] ) );
} elseif ( is_string( $block->context['query']['author'] ) ) {
$query['author__in'] = array_filter( array_map( 'intval', explode( ',', $block->context['query']['author'] ) ) );
} elseif ( is_int( $block->context['query']['author'] ) && $block->context['query']['author'] > 0 ) {
$query['author'] = $block->context['query']['author'];
}
}
if ( ! empty( $block->context['query']['search'] ) ) {
$query['s'] = $block->context['query']['search'];
}
if ( ! empty( $block->context['query']['parents'] ) && is_post_type_hierarchical( $query['post_type'] ) ) {
$query['post_parent__in'] = array_unique( array_map( 'intval', $block->context['query']['parents'] ) );
}
}
/**
* Filters the arguments which will be passed to `WP_Query` for the Query Loop Block.
*
* Anything to this filter should be compatible with the `WP_Query` API to form
* the query context which will be passed down to the Query Loop Block's children.
* This can help, for example, to include additional settings or meta queries not
* directly supported by the core Query Loop Block, and extend its capabilities.
*
* Please note that this will only influence the query that will be rendered on the
* front-end. The editor preview is not affected by this filter. Also, worth noting
* that the editor preview uses the REST API, so, ideally, one should aim to provide
* attributes which are also compatible with the REST API, in order to be able to
* implement identical queries on both sides.
*
* @since 6.1.0
*
* @param array $query Array containing parameters for `WP_Query` as parsed by the block context.
* @param WP_Block $block Block instance.
* @param int $page Current query's page.
*/
return apply_filters( 'query_loop_block_query_vars', $query, $block, $page );
}
/**
* Helper function that returns the proper pagination arrow HTML for
* `QueryPaginationNext` and `QueryPaginationPrevious` blocks based
* on the provided `paginationArrow` from `QueryPagination` context.
*
* It's used in QueryPaginationNext and QueryPaginationPrevious blocks.
*
* @since 5.9.0
*
* @param WP_Block $block Block instance.
* @param bool $is_next Flag for handling `next/previous` blocks.
* @return string|null The pagination arrow HTML or null if there is none.
*/
function get_query_pagination_arrow( $block, $is_next ) {
$arrow_map = array(
'none' => '',
'arrow' => array(
'next' => '→',
'previous' => '←',
),
'chevron' => array(
'next' => '»',
'previous' => '«',
),
);
if ( ! empty( $block->context['paginationArrow'] ) && array_key_exists( $block->context['paginationArrow'], $arrow_map ) && ! empty( $arrow_map[ $block->context['paginationArrow'] ] ) ) {
$pagination_type = $is_next ? 'next' : 'previous';
$arrow_attribute = $block->context['paginationArrow'];
$arrow = $arrow_map[ $block->context['paginationArrow'] ][ $pagination_type ];
$arrow_classes = "wp-block-query-pagination-$pagination_type-arrow is-arrow-$arrow_attribute";
return "<span class='$arrow_classes' aria-hidden='true'>$arrow</span>";
}
return null;
}
/**
* Helper function that constructs a comment query vars array from the passed
* block properties.
*
* It's used with the Comment Query Loop inner blocks.
*
* @since 6.0.0
*
* @param WP_Block $block Block instance.
* @return array Returns the comment query parameters to use with the
* WP_Comment_Query constructor.
*/
function build_comment_query_vars_from_block( $block ) {
$comment_args = array(
'orderby' => 'comment_date_gmt',
'order' => 'ASC',
'status' => 'approve',
'no_found_rows' => false,
);
if ( is_user_logged_in() ) {
$comment_args['include_unapproved'] = array( get_current_user_id() );
} else {
$unapproved_email = wp_get_unapproved_comment_author_email();
if ( $unapproved_email ) {
$comment_args['include_unapproved'] = array( $unapproved_email );
}
}
if ( ! empty( $block->context['postId'] ) ) {
$comment_args['post_id'] = (int) $block->context['postId'];
}
if ( get_option( 'thread_comments' ) ) {
$comment_args['hierarchical'] = 'threaded';
} else {
$comment_args['hierarchical'] = false;
}
if ( get_option( 'page_comments' ) === '1' || get_option( 'page_comments' ) === true ) {
$per_page = get_option( 'comments_per_page' );
$default_page = get_option( 'default_comments_page' );
if ( $per_page > 0 ) {
$comment_args['number'] = $per_page;
$page = (int) get_query_var( 'cpage' );
if ( $page ) {
$comment_args['paged'] = $page;
} elseif ( 'oldest' === $default_page ) {
$comment_args['paged'] = 1;
} elseif ( 'newest' === $default_page ) {
$max_num_pages = (int) ( new WP_Comment_Query( $comment_args ) )->max_num_pages;
if ( 0 !== $max_num_pages ) {
$comment_args['paged'] = $max_num_pages;
}
}
}
}
return $comment_args;
}
/**
* Helper function that returns the proper pagination arrow HTML for
* `CommentsPaginationNext` and `CommentsPaginationPrevious` blocks based on the
* provided `paginationArrow` from `CommentsPagination` context.
*
* It's used in CommentsPaginationNext and CommentsPaginationPrevious blocks.
*
* @since 6.0.0
*
* @param WP_Block $block Block instance.
* @param string $pagination_type Optional. Type of the arrow we will be rendering.
* Accepts 'next' or 'previous'. Default 'next'.
* @return string|null The pagination arrow HTML or null if there is none.
*/
function get_comments_pagination_arrow( $block, $pagination_type = 'next' ) {
$arrow_map = array(
'none' => '',
'arrow' => array(
'next' => '→',
'previous' => '←',
),
'chevron' => array(
'next' => '»',
'previous' => '«',
),
);
if ( ! empty( $block->context['comments/paginationArrow'] ) && ! empty( $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ] ) ) {
$arrow_attribute = $block->context['comments/paginationArrow'];
$arrow = $arrow_map[ $block->context['comments/paginationArrow'] ][ $pagination_type ];
$arrow_classes = "wp-block-comments-pagination-$pagination_type-arrow is-arrow-$arrow_attribute";
return "<span class='$arrow_classes' aria-hidden='true'>$arrow</span>";
}
return null;
}
/**
* Strips all HTML from the content of footnotes, and sanitizes the ID.
*
* This function expects slashed data on the footnotes content.
*
* @access private
* @since 6.3.2
*
* @param string $footnotes JSON-encoded string of an array containing the content and ID of each footnote.
* @return string Filtered content without any HTML on the footnote content and with the sanitized ID.
*/
function _wp_filter_post_meta_footnotes( $footnotes ) {
$footnotes_decoded = json_decode( $footnotes, true );
if ( ! is_array( $footnotes_decoded ) ) {
return '';
}
$footnotes_sanitized = array();
foreach ( $footnotes_decoded as $footnote ) {
if ( ! empty( $footnote['content'] ) && ! empty( $footnote['id'] ) ) {
$footnotes_sanitized[] = array(
'id' => sanitize_key( $footnote['id'] ),
'content' => wp_unslash( wp_filter_post_kses( wp_slash( $footnote['content'] ) ) ),
);
}
}
return wp_json_encode( $footnotes_sanitized );
}
/**
* Adds the filters for footnotes meta field.
*
* @access private
* @since 6.3.2
*/
function _wp_footnotes_kses_init_filters() {
add_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' );
}
/**
* Removes the filters for footnotes meta field.
*
* @access private
* @since 6.3.2
*/
function _wp_footnotes_remove_filters() {
remove_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' );
}
/**
* Registers the filter of footnotes meta field if the user does not have `unfiltered_html` capability.
*
* @access private
* @since 6.3.2
*/
function _wp_footnotes_kses_init() {
_wp_footnotes_remove_filters();
if ( ! current_user_can( 'unfiltered_html' ) ) {
_wp_footnotes_kses_init_filters();
}
}
/**
* Initializes the filters for footnotes meta field when imported data should be filtered.
*
* This filter is the last one being executed on {@see 'force_filtered_html_on_import'}.
* If the input of the filter is true, it means we are in an import situation and should
* enable kses, independently of the user capabilities. So in that case we call
* _wp_footnotes_kses_init_filters().
*
* @access private
* @since 6.3.2
*
* @param string $arg Input argument of the filter.
* @return string Input argument of the filter.
*/
function _wp_footnotes_force_filtered_html_on_import_filter( $arg ) {
// If `force_filtered_html_on_import` is true, we need to init the global styles kses filters.
if ( $arg ) {
_wp_footnotes_kses_init_filters();
}
return $arg;
}
أجابت الآلة على الأسئلة ؟: ماذا قال روبوت ل محمد طه؟
بعد 8 سنوات .. تنبؤات الروبوت تتحول إلى واقع..
حروب 2025 في حوار منذ2017؟
: محمد طه يكشف أسرار حول الذكاء الاصطناعي
كتبت : فرح سمير
تضمن حواراً فريدًا من نوعه، BBC في عام 2017، شهد الإعلام العربي حدثًا غير مسبوق، حيث تم بث مباشر عبر قناة العربية
أُجري مع روبوت مدعوم بالذكاء الاصطناعي يحاكي البشر .وكان هذا الحوار من تقديم الإعلامي محمد طه، مراسل الشؤون التكنولوجية في القناة
منذ ذلك الحين، واصل محمد طه تقديم أبرز التقارير والتغطيات لأهم المؤتمرات العالمية، وكان دائمًا مميز ا في تناول أحدث التطورات التكنولوجية وفي هذا اللقاء الحصري، يحدثنا عن كواليس حواره مع الروبوت “صوفيا”، ويتطرق إلى آرائه حول الذكاء الاصطناعي، ومستقبل الإعلام، والتحولات التقنية التي باتت تؤثر في كل القطاعات
– صف لي شعورك عندما أجابك الروبوت، واستطاع بالفعل مجاراة الحوار، نظرًا لأن المقابلة كانت في عام 2017 ؟
في البداية، كان لدي انطباع بأن الروبوت قد لا يكون كائناً مستقلًً، بل ربما يكون هناك شخص ما يتواصل معه أو يدعمه في تقديم الإجابات. لم أكن مقتنعاً في البداية بقدرة الروبوت على الرد على أسئلتي بشكل مستقل دون أي مساعدة من شخص آخر.هذا الأمر لم يكن شائعاً كما هو اليوم.
أثناء تواجدي في معرض، تم إخباري بإمكانية إجراء محادثة مع روبوت، ولم أصدق ذلك. كان انطباعي الأول أن هناك شخصًا يستمع إلى سؤالي ويقوم بالرد عليه بشكل مستقل ودون تدخل بشري. لم أكن أتخيل أن الروبوت قادر على تقديم إجابات مباشرة من مكان ما أو من غرفة تحكم.
– هل قمَتَ بتعديل أسلوبك الصحفي أو الحواري ليتناسب مع قدرة الروبوت على معالجة الأمر والتجاوب معك؟
كان هدفي الأساسي خلال الحوار ه والحفاظ على طبيعية التفاعل، وه وما شكل تحديًا كبيرًا. فعندما تواجه جهازًا توجه له أسئلة ويقوم بالرد عليك، فإن ذلك كان يعتبر في السابق نوعًا من الخيال. نحن في مجال الصحافة والإعلام نملك خبرة واسعة في التعامل مع البشر، حيث يمكنني رؤية تعبيرات وجهك وتفاعل جسدك مما يساعدني على تعديل أسلوبي وفق ذلك. لكن عند التعامل مع الروبوت، تفتقر إلى تعبيرات الوجه والملامح التفاعلية، مما يجعل ردود الفعل غير قابلة للتنب ؤ.
ما الذي لاحظته من فروقات واضحة في طريقة التعامل مع روبوت مقارنة بمقابلة إعلامية طبيعية مع إنسان؟
بالتأكيد هناك اختلافات تتعلق بتحضير المقابلة. عند إجراء مقابلة مع إنسان، يتم إعداد الحوار بناءً على شخصية الضيف وخلفيته. أما بالنسبة للروبوت فلم أكن أملك معلومات مسبقة عنه. كان تركيزي منصبًا على طبيعة الروبوت نفسه وعلاقته بالإنسان ومستقبله.
ذكرت في بداية المراسلة أن ردود أفعالها تشبه البشر، فهل تشبه ردود أفعال الروبوت وتعبير وجهه الإنسان؟ كما ذكرت أثناء تصوير المقابلة أن “الروبوت” المصنوع يحُاكي الأنثى البشرية، وحصل على الجنسية السعودية؟
نعم ذكرت بالفعل جنسيتهاً ولقد ذكرت بالفعل أن للروبوت تعبيرات وجه وحركات معينة تجعل الشخص يتساءل عما إذا كان يتعامل مع كائن بشري أو شبه بشري أو آلة. خلًل المقابلة لم نكن معتادين على هذه التقنية الجديدة.
– من خلال الحوار مع الروبوت، هل ترى أن الاندماج والتعامل مع الروبوتات يُعد تحدياً، أم أنه سهل التأقلم؟ وهل يمثل هذا تحدياً لنا كإعلاميين أو كبشر عمومًا؟
لا أعتقد أنه يمثل تحديًا كبيرًا؛ فقد أصبح الناس معتادين بشكل متزايد على الذكاء الاصطناعي وبدأوا يتأقلمون معه بسهولة. سأعطيك مثالًا آخر: كنتُ في إحدى الدول، وطلبتُ بعض أدوات تنظيف الأسنان، وعندما فتحت الباب، فوجئت بأن روبوت أحضرها لي. لم أستغرب، لأني بالفعل أصبحت أتوقع مثل هذه الأمور .
في وقت الحوار عام 2017، هل واجهت أي صعوبات أو تحديات؟
بالتأكيد كانت هناك حالة من الاستغراب وكان التحدي يكمن في الحفاظ على أسلوب تلقائي وطبيعي رغم أنني كنت أتحدث إلى آلة. كان عليّ أن أتعامل معها كإنسان حقيقي، وأن أطرح عليها أسئلة كما أفعل في مقابلاتي المعتادة، حتى يكون الحوار سلسًا.
– خلال الحوار، طرحتَ سؤا الا: “بماذا ترغبين في العمل في المستقبل؟” فأجابت الروبوت “صوفيا” بإجابة مفاجئة حول التظاهرات الدموية. كيف استقبلت هذه الإجابة؟
كانت إجابتها صادمة للغاية وقد أثارت تساؤلات حول دقة توقعاتها والخوارزميات المستخدمة خلف تلك التحليلات التي صرحتها وكانت “في المستقبل سيكون هناك تظاهرات دموية وصراعات ما لم نصبح أكثر ذكاءً واجتماعية مثلي، وربما نساعد في التعامل مع هذا الوضع.”
في ذلك الوقت، لم تكن هناك مؤشرات على أي حروب أو صراعات، بل كانت الأمور مستقرة نسب ايا. لكن مع مرور السنوات، وقعت فعل ايا أحداث دموية وصراعات كبيرة.
هذا يثير التساؤلات حول دقة توقعات الذكاء الاصطناعي، والخوارزميات التي تقف خلف هذه التحليلات.
هل تعتقد أن توقعاتها كانت مبنية على خوارزميات دقيقة، أم تدخل بشري؟
قد تكون مستندة إلى تحليلات بشرية أ و تقارير صحفية؛ فالروبوت لا يفكر كما نفكر، بل يعتمد على البيانات والخوارزميات المعقدة لتقديم توقعاته المستقبلية. هذا يجعلنا نعود إلى التساؤل: إلى أي مدى تستطيع الروبوتات أن تتعلّم ذاتيًا؟ وهل يمكن أن تتخذ قرارات مستقلة مستقبلاً ؟
هل من الممكن أن تنشئ الروبوتات شركات وتدير أعما الا مستقلة ؟
نعم، كان هناك تقارير أعدتها عن روبوتات قامت بتأسيس شركات خاصة بها وأصبحت تديرها بشكل مستقل تقريب اً باستثناء وجود شخص واحد فقط لدعم العمليات الإدارية.
كنت قد غطيت مؤتمر باريس مؤخ ارا. ما أبرز ما جاء فيه؟
فرنسا نظّمت أكبر قمة عالمية للذكاء الاصطناعي منذ ستة أسابيع، وشاركت فيها شخصيات دولية رفيعة المستوى. شهد المؤتمر دعوات لوضع قوانين أخلاقية لتنظيم تطور الذكاء الاصطناعي بينما رفضت بعض الدول الكبرى مثل الولايات المتحدة وبريطانيا الالتزام بهذه المبادئ. الاستمرار في التطوير دون قيود.
وفي نهاية القمة، صدر “إعلان باريس”، الذي شددّ على أهمية مراعاة الأخلاقيات في تطوير الذكاء الاصطناعي.
–إذا بنا ء على ما تم ذكره، بماذا توصي الصحفيين في الفترة القادمة؟ فيما يلتزمون به أ ويلتفتون إليه؟ وبماذا توصيهم أو ما النصائح التي تنصح الصحفيين أن يتبعوها لمجاراة التقدم المستم ر في التكنولوجيا أو الذكاء الاصطناعي؟
يجب على الصحفيين تعلم استخدام الذكاء الاصطناعي وتطبيقه في كل جوانب عملهم، مثل إعداد الفيديوهات والبحث، مع الالتزام بالأخلًقية في استخدامه. هذه التقنية تسهل مهامهم وتوفر الوقت والجهد، مما يحسن جودة العمل. من الضروري أن يكون الجميع قادرين على تمييز الأعمال التي تنتجها الآلات وعدم الاعتماد عليها كلياً واستخدامها كأداة مساعدة. وانا كصحفي في التلفزيوني أركز على الجانب البصري واستخدم تقنياته الجرافيكية والتوضيحية الخاصة به عند الظهور في التلفزيون، ولا يعتمد على غيره في إنتاج عمله بفضل تعليمه وخبرته وفريقه الذي يساعده في إنتاج محتوى بصري قوي ومميز. ورغم تطور الذكاء الاصطناعي، فإنه لا يزال غير قادر على إنتاج أعمال تجمع بين العناصر البصرية والشخصية الفريدة للصحفي أو المراسل، ويخدم الصحفي فقط في مجال محدد. يجب على الصحفيين بناء شخصية وأسلوب وحضور خاص بهم ودمجها مع تقنياتهم ومعارفهم، وتوظيف الذكاء الاصطناعي بما يتناسب مع أسلوبهم وحضورهم لتحقيق فائدة أكبر. ينبغي على الصحفيين التفكير في القيمة المضافة والتركيز على الجودة لا الكمية، فالأهم هو محتوى وأهمية ما يقدم للجمهور لا عدد الأخبار. الكاتب يوجه تركيزه نحو إعداد تقرير مصور أسبوعي أو شهري شامل وعالي الجودة لجذب الجمهور. لذا، من الضروري أن يوجه الصحفيون اهتمامهم نحو تقديم محتوى عالي الجودة بدلاً من التركيز على الكم فقط.
-عند لمس الروبوت، هل كان هنا ك أي اختلاف ب ي ملمس جلد الإنسان وجلده؟
بالنسبة للمس بين جلد الإنسان وجلد الروبوت، لا يوجد فرق كبير. ومع ذلك، يتردد الناس في لمس الروبوت بسبب حساسية. الموضوع وارتباط ه بحقو ق الروبوت ككائن إنساني. وكان من الضروري مراعاة جميع الثقافات المختلفة ف ي هذا السياق.
بما أن الحوار أُجري منذ ٨ أعوام ف ٢٠١٧، فما هى التطورات التى حدثت للروبوتات بشكل عا م خلال السنوات الثمان الماضية من وجهة نظرك ؟
نحن على أعتاب عقد جديد حيث يصعب تصور تأثير التكنولوجيا على مجالات مثل الإعلًم والطب والاقتصاد. جميع المؤسسات تفكر بجدية في مستقبل موظفيها وأنظمتها، مما يتطلب استعداًدًا كبيرًا للتغييرات المرتقبة. هناك شخصيات بارزة مثل إيلون ماسك تعبر عن أهمية استكشاف المريخ، وتدور نقاشات بينه وبين مؤسس وكالة ناسا حول أولويات الرحلًت الفضائية. يؤكد ماسك على ضرورة إنشاء قاعدة على المريخ نظرًا للتغيرات التي نشهدها على كوكب الأرض.
وفي نهاية الحوار، وبعد شكر ك له، و جه إليك سؤا لا بصيغة تح د وأمر، حيث قال” :قبل أن تمضي، ما هي توقعاتك للمستقبل؟”، فهل شعر ت حينها بالخطورة من تح ديه للعقل البشري؟ وهل توقعت أنه سيأتي يو م يكو ن فيه هو من يوجه الأسئلة ويغطي الأخبار ويحل محل الإعلامي؟
هذا السؤال جعلني أشعر بالراحة في التعامل مع الروبوت، حيث كان الحوار تفاعلياً وحقيقيًا .لم أكن أتوقع يومًا أن يأتي وقت يكون فيه روبوت هو من يسأل ويخطط الأخبار، بل ويحاكي الإعلام بشكل عام .التكنولوجيا اليوم تفوق أي توقعات سابقة .قبل بضع .سنوات فقط، لم يكن هناك تصو ر لوجود روبوتات قادرة على التعامل مع الأخبار بنفس كفاءة البشر.
من خلال خبرتك في المجال الإعلامي، هل سيقبل الجمهور بفكرة وجود مذيع برامج أو مراسل أو صحفي انه آلة ( روبوت)؟ هل هناك تجارب سابقة من بي بي سي تشير إلى تقبل الجمهور لهذا الأمر ؟
لا تزال مؤسسة البي بي سي تقوم بتجارب لفهم مدى تفاعل الجمهور واستجابته لهذه الآلات أو المذيعين الآليين قبل تنفيذها بشكل كامل. ستقوم البي بي سي بإجراء بحوث للجمهور لفهم كيفية تفاعله م مع الروبوتات والذكاء الاصطناعي ومقارنتها بالتفاعل مع الأشخاص العاديين. بالنظر إلى المستقبل، قد تتطور الروبوتات لتصبح أكثر ذكاءً وقدرة ً على التكيف مع احتياجات الجمهور
بناءا على تقنية (Machine Learning)) نظرية التعلم الآلي: يرى إيلون ماسك أن نظرية التعلم الآلي قد تؤدي إلى تطور الروبوتات بشكل مستقل وقدرتها على التحكم بالبشر، وهو ما يظهر في أفلًم الذكاء الاصطناعي كمصدر للمخاوف والتحديات. يوجد خلًف بين ماسك وزوكربيرج حول هذا الاحتمال، حيث يعتبر زوكربيرج مخاوف ماسك مبالغًا فيها، بينما يشدد ماسك على أهمية الاستعداد لهذا السيناريو بحذر. في الوقت نفسه، تكشف الدراسات عن تطور علًقات عاطفية بين البشر والشات بوتس، وهي ظاهرة بدأت في الغرب وتظهر في الشرق الأوسط، مما يثير تساؤلات حول طبيعة العلًقة المستقبلية بين الإنسان والآلة وتأثيرها على مفاهيم السلطة والسيطرة.
في ختام هذا الحور المثير مع الإعلامي “محمد طه” ، نرى بوضوح كيف بدأ مشهد الإعلام والتقنية في التغي ر جذرياً منذ عام 2017 مع أول حوار تلفزيوني مع روبوت. تجربة طه مع “صوفيا” لم تكن مجرد حدث إعلامي فريد، ب ل كانت نافذة مبكرة على مستقبل يتقاطع فيه الإنسان والآلة بشكل متزايد.
