1 <?php

     2 /**

     3  * Server-side rendering of the `core/pattern` block.

     4  *

     5  * @package WordPress

     6  */

     7 

     8 /**

     9  *  Registers the `core/pattern` block on the server.

    10  *

    11  * @return void

    12  */

    13 function register_block_core_pattern() {

    14 	register_block_type_from_metadata(

    15 		__DIR__ . '/pattern',

    16 		array(

    17 			'render_callback' => 'render_block_core_pattern',

    18 		)

    19 	);

    20 }

    21 

    22 /**

    23  * Renders the `core/pattern` block on the server.

    24  *

    25  * @param array $attributes Block attributes.

    26  *

    27  * @return string Returns the output of the pattern.

    28  */

    29 function render_block_core_pattern( $attributes ) {

    30 	if ( empty( $attributes['slug'] ) ) {

    31 		return '';

    32 	}

    33 

    34 	$slug     = $attributes['slug'];

    35 	$registry = WP_Block_Patterns_Registry::get_instance();

    36 	if ( ! $registry->is_registered( $slug ) ) {

    37 		return '';

    38 	}

    39 

    40 	$pattern = $registry->get_registered( $slug );

    41 	return do_blocks( $pattern['content'] );

    42 }

    43 

    44 add_action( 'init', 'register_block_core_pattern' );