<?php if ( ! defined( 'ABSPATH' ) ) exit;
/**
* Class NF_Display_Preview
*/
class NF_Display_Preview
{
protected $_form_id = '';
public function __construct()
{
$this->_form_id = $this->constructFormId();
if(is_null($this->_form_id)){
return;
}
add_action('pre_get_posts', array($this, 'pre_get_posts'));
add_filter('the_title', array($this, 'the_title'));
remove_filter('the_content', 'wpautop');
remove_filter('the_excerpt', 'wpautop');
add_filter('the_content', array($this, 'the_content'), 9001);
add_filter('get_the_excerpt', array($this, 'the_content'));
//switched from template_include to template redirect filter hook to work with block-based (FSE) themes
add_filter('template_redirect', array($this, 'template_include'));
add_filter('post_thumbnail_html', array($this, 'post_thumbnail_html'));
}
public function pre_get_posts( $query )
{
$query->set( 'posts_per_page', 1 );
}
/**
* @return string
*/
function the_title( $title )
{
if( ! in_the_loop() ) return $title;
$form_title = Ninja_Forms()->form( $this->_form_id )->get()->get_setting( 'title' );
return esc_html( $form_title ) . " " . esc_html__( 'Preview', 'ninja-forms' );
}
/**
* @return string
*/
function the_content()
{
if ( !$this->userCanViewPreview() ) return esc_html__( 'You must be logged in and have form privileges to preview a form.', 'ninja-forms' );
// takes into account if we are trying to preview a non-published form
$tmp_id_test = explode( '-', $this->_form_id );
// if only 1 element, then is it numeric
if( 1 === count( $tmp_id_test) && ! is_numeric( $tmp_id_test[ 0 ] ) ) {
return esc_html__( 'You must provide a valid form ID.', 'ninja-forms' );
}
// if 2 array elements, is the first equal to 'tmp' and the second numeric
elseif ( ( 2 === count( $tmp_id_test )
&& ('tmp' != $tmp_id_test[ 0 ]
|| ! is_numeric( $tmp_id_test[ 1 ] ) ) ) ) {
return esc_html__( 'You must provide a valid form ID.', 'ninja-forms' );
}
return do_shortcode("[nf_preview id='" . esc_attr($this->_form_id) . "']");
}
/**
* Construct the form id
*
* Check for GET parameter, then sanitize. Failures return null
*
* @return string|null
*/
protected function constructFormId()
{
$return = null;
$previewParameter = $this->extractPreviewGetParameter();
if (is_null($previewParameter)) {
return $return;
}
$sanitizedFormId = $this->sanitizeFormId($previewParameter);
if (is_null($sanitizedFormId)) {
return $return;
}
return $sanitizedFormId;
}
/**
* Return the GET parameter for form preview id
*
* @return string|null
*/
protected function extractPreviewGetParameter()
{
$return = null;
if ( isset( $_GET['nf_preview_form'] ) ){
$return = $_GET['nf_preview_form'];
}
return $return;
}
/**
* Ensure form Id is only integer or tmp-*
*
* If disallowed structure is found, return null
*
* @param int|string $unsanitizedFormId
* @return int|string|null
*/
protected function sanitizeFormId($unsanitizedFormId)
{
$return = null;
$wpSanitized = WPN_Helper::sanitize_text_field($unsanitizedFormId);
if(is_int($wpSanitized) ||
is_string($wpSanitized) && ctype_digit($wpSanitized) ){
$return = $wpSanitized;
return $return;
}
if(!is_string($wpSanitized)){
return $return;
}
$return = $this->sanitizeForUnpublishedFormId($wpSanitized);
return $return;
}
/**
* Allow non-integer-like values form unpublished form
*
* Uses format tmp-***
*
* @param string $incoming
* @return void
*/
protected function sanitizeForUnpublishedFormId(string $incoming)
{
$return = null;
if (strpos($incoming, 'tmp-') === 0) {
$prefixRemoved = str_replace('tmp-', '', $incoming);
if (ctype_digit($prefixRemoved)) {
$return = $incoming;
}
}
return $return;
}
/**
* Does user have permission to preview forms?
*
* @return boolean
*/
protected function userCanViewPreview(): bool
{
$return = true;
if (! is_user_logged_in() || !current_user_can(apply_filters('ninja_forms_admin_all_forms_capabilities', 'manage_options'))) {
$return = false;
}
return $return;
}
/**
* Locate_template will be loaded using second argument of the get_query_templates() function
* First argument will be prefixed with _template to create a hook
* @return void
*/
function template_include()
{
$templates = array( 'page.php', 'single.php', 'index.php');
include( get_query_template('ninja-forms', $templates) );
exit;
}
function post_thumbnail_html() {
return '';
}
} // END CLASS NF_Display_Preview
ما بقاش الذكاء الاصطناعي مجرد خيال علمي أو تطور مستنيينه في المستقبل… لأ، ده بقى واقع عايشينه كل يوم، وبيأثر بشكل مباشر على شغلنا، ومهاراتنا، وحتى على الوظايف نفسها. في الفيديو ده، هنتكلم عن إزاي الذكاء الاصطناعي قلب موازين سوق العمل، إيه المهن اللي بدأت تختفي، وإيه اللي طلع جديد، وإزاي نجهز نفسنا للمستقبل اللي بدأ خلاص.