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EDIT :: cmb_Meta_Box_ajax.php

<?php /** * CMB ajax methods * (i.e. a lot of work to get oEmbeds to work with non-post objects) * * @since 0.9.5 */ class cmb_Meta_Box_ajax { // A single instance of this class. public static $instance = null; // Whether to hijack the oembed cache system public static $hijack = false; public static $object_id = 0; public static $embed_args = array(); public static $object_type = 'post'; /** * Creates or returns an instance of this class. * @since 0.1.0 * @return cmb_Meta_Box_ajax A single instance of this class. */ public static function get() { if ( self::$instance === null ) self::$instance = new self(); return self::$instance; } /** * Handles our oEmbed ajax request * @since 0.9.5 * @return object oEmbed embed code | fallback | error message */ public function oembed_handler() { // verify our nonce if ( ! ( isset( $_REQUEST['cmb_ajax_nonce'], $_REQUEST['oembed_url'] ) && wp_verify_nonce( $_REQUEST['cmb_ajax_nonce'], 'ajax_nonce' ) ) ) die(); // sanitize our search string $oembed_string = sanitize_text_field( $_REQUEST['oembed_url'] ); // send back error if empty if ( empty( $oembed_string ) ) self::send_result( '<p class="ui-state-error-text">'. __( 'Please Try Again', 'cmb' ) .'</p>', false ); // Set width of embed $embed_width = isset( $_REQUEST['oembed_width'] ) && intval( $_REQUEST['oembed_width'] ) < 640 ? intval( $_REQUEST['oembed_width'] ) : '640'; // set url $oembed_url = esc_url( $oembed_string ); // set args $embed_args = array( 'width' => $embed_width ); // Get embed code (or fallback link) $html = self::get_oembed( $oembed_url, $_REQUEST['object_id'], array( 'object_type' => isset( $_REQUEST['object_type'] ) ? $_REQUEST['object_type'] : 'post', 'oembed_args' => $embed_args, 'field_id' => $_REQUEST['field_id'], ) ); self::send_result( $html ); } /** * Retrieves oEmbed from url/object ID * @since 0.9.5 * @param string $url URL to retrieve oEmbed * @param int $object_id Object ID * @param array $args Arguments for method * @return string html markup with embed or fallback */ public static function get_oembed( $url, $object_id, $args = array() ) { global $wp_embed; $oembed_url = esc_url( $url ); // Sanitize object_id self::$object_id = is_numeric( $object_id ) ? absint( $object_id ) : sanitize_text_field( $object_id ); $args = wp_parse_args( $args, array( 'object_type' => 'post', 'oembed_args' => self::$embed_args, 'field_id' => false, 'cache_key' => false, ) ); self::$embed_args =& $args; // set the post_ID so oEmbed won't fail // wp-includes/class-wp-embed.php, WP_Embed::shortcode(), line 162 $wp_embed->post_ID = self::$object_id; // Special scenario if NOT a post object if ( isset( $args['object_type'] ) && $args['object_type'] != 'post' ) { if ( 'options-page' == $args['object_type'] ) { // bogus id to pass some numeric checks // Issue with a VERY large WP install? $wp_embed->post_ID = 1987645321; // Use our own cache key to correspond to this field (vs one cache key per url) $args['cache_key'] = $args['field_id'] .'_cache'; } // Ok, we need to hijack the oembed cache system self::$hijack = true; self::$object_type = $args['object_type']; // Gets ombed cache from our object's meta (vs postmeta) add_filter( 'get_post_metadata', array( 'cmb_Meta_Box_ajax', 'hijack_oembed_cache_get' ), 10, 3 ); // Sets ombed cache in our object's meta (vs postmeta) add_filter( 'update_post_metadata', array( 'cmb_Meta_Box_ajax', 'hijack_oembed_cache_set' ), 10, 4 ); } $embed_args = ''; foreach ( $args['oembed_args'] as $key => $val ) { $embed_args .= " $key=\"$val\""; } // ping WordPress for an embed $check_embed = $wp_embed->run_shortcode( '[embed'. $embed_args .']'. $oembed_url .'[/embed]' ); // fallback that WordPress creates when no oEmbed was found $fallback = $wp_embed->maybe_make_link( $oembed_url ); // Send back our embed if ( $check_embed && $check_embed != $fallback ) return '<div class="embed_status">'. $check_embed .'<p class="cmb_remove_wrapper"><a href="#" class="cmb_remove_file_button" rel="'. $args['field_id'] .'">'. __( 'Remove Embed', 'cmb' ) .'</a></p></div>'; // Otherwise, send back error info that no oEmbeds were found return '<p class="ui-state-error-text">'. sprintf( __( 'No oEmbed Results Found for %s. View more info at', 'cmb' ), $fallback ) .' <a href="http://codex.wordpress.org/Embeds" target="_blank">codex.wordpress.org/Embeds</a>.</p>'; } /** * Hijacks retrieving of cached oEmbed. * Returns cached data from relevant object metadata (vs postmeta) * * @since 0.9.5 * @param boolean $check Whether to retrieve postmeta or override * @param int $object_id Object ID * @param string $meta_key Object metakey * @return mixed Object's oEmbed cached data */ public static function hijack_oembed_cache_get( $check, $object_id, $meta_key ) { if ( ! self::$hijack || ( self::$object_id != $object_id && 1987645321 !== $object_id ) ) return $check; // get cached data $data = 'options-page' === self::$object_type ? cmb_Meta_Box::get_option( self::$object_id, self::$embed_args['cache_key'] ) : get_metadata( self::$object_type, self::$object_id, $meta_key, true ); return $data; } /** * Hijacks saving of cached oEmbed. * Saves cached data to relevant object metadata (vs postmeta) * * @since 0.9.5 * @param boolean $check Whether to continue setting postmeta * @param int $object_id Object ID to get postmeta from * @param string $meta_key Postmeta's key * @param mixed $meta_value Value of the postmeta to be saved * @return boolean Whether to continue setting */ public static function hijack_oembed_cache_set( $check, $object_id, $meta_key, $meta_value ) { if ( ! self::$hijack || ( self::$object_id != $object_id && 1987645321 !== $object_id ) ) return $check; // Cache the result to our metadata if ( 'options-page' === self::$object_type ) { // Set the option cmb_Meta_Box::update_option( self::$object_id, self::$embed_args['cache_key'], $meta_value, array( 'type' => 'oembed' ) ); // Save the option cmb_Meta_Box::save_option( self::$object_id ); } else { update_metadata( self::$object_type, self::$object_id, $meta_key, $meta_value ); } // Anything other than `null` to cancel saving to postmeta return true; } /** * Helper to send json encoded response to ajax * @since 0.9.5 * @param string $data Data to be shown via ajax * @param boolean $success Success or fail */ public static function send_result( $data, $success = true ) { $found = $success ? 'found' : 'not found'; // send back our encoded data echo json_encode( array( 'result' => $data, 'id' => $found ) ); die(); } }

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