'; } } add_action( 'wp_head', 'minimal_blocks_pingback_header' ); /** * A get_post_gallery() polyfill for Gutenberg * * @param string $gallery The current gallery html that may have already been found (through shortcodes). * @param int $post The post id. * @return string The gallery html. */ function minimal_blocks_get_post_gallery( $gallery, $post ) { // Already found a gallery so lets quit. if ( $gallery ) { return $gallery; } // Check the post exists. $post = get_post( $post ); if ( ! $post ) { return $gallery; } // Not using Gutenberg so let's quit. if ( ! function_exists( 'has_blocks' ) ) { return $gallery; } // Not using blocks so let's quit. if ( ! has_blocks( $post->post_content ) ) { return $gallery; } /** * Search for gallery blocks and then, if found, return the html from the * first gallery block. * * Thanks to Gabor for help with the regex: * https://twitter.com/javorszky/status/1043785500564381696. */ $pattern = "/([\s\S]*?)/i"; preg_match_all( $pattern, $post->post_content, $the_galleries ); // Check a gallery was found and if so change the gallery html. if ( ! empty( $the_galleries[1] ) ) { $gallery = reset( $the_galleries[1] ); } return $gallery; } add_filter( 'get_post_gallery', 'minimal_blocks_get_post_gallery', 10, 2 );