wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php:153Returns block output from block's registered render_callback.
$requestWP_REST_RequestWP_REST_Response|WP_Error public function get_item( $request ) { global $post; $post_id = isset( $request['post_id'] ) ? (int) $request['post_id'] : 0; if ( $post_id > 0 ) { $post = get_post( $post_id ); // Set up postdata since this will be needed if post_id was set. setup_postdata( $post ); } $registry = WP_Block_Type_Registry::get_instance(); $registered = $registry->get_registered( $request['name'] ); if ( null === $registered || ! $registered->is_dynamic() ) { return new WP_Error( 'block_invalid', __( 'Invalid block.' ), array( 'status' => 404, ) ); } $attributes = $request->get_param( 'attributes' ); // Create an array representation simulating the output of parse_blocks. $block = array( 'blockName' => $request['name'], 'attrs' => $attributes, 'innerBlocks' => array(), 'innerHTML' => '', 'innerContent' => array(), ); // Render using render_block to ensure all relevant filters are used. $data = array( 'rendered' => render_block( $block ), ); return rest_ensure_response( $data ); }Introduced in 5.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-block-renderer-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.