WP_Block::render() │ public │ WP 5.5.0

Generates the render output for the block.

{} It's a method of the class: WP_Block{}

Return

String. Rendered block output.

Usage

$WP_Block = new WP_Block();
$WP_Block->render( $options );

$options(array)

Optional options object.

Default: array()

• dynamic(true|false)
  Defaults to 'true'. Optionally set to false to avoid using the block's render_callback.

Changelog

Code of WP_Block::render() WP Block::render ^{WP 6.0.1}

public function render( $options = array() ) {
	global $post;
	$options = wp_parse_args(
		$options,
		array(
			'dynamic' => true,
		)
	);

	$is_dynamic    = $options['dynamic'] && $this->name && null !== $this->block_type && $this->block_type->is_dynamic();
	$block_content = '';

	if ( ! $options['dynamic'] || empty( $this->block_type->skip_inner_blocks ) ) {
		$index = 0;

		foreach ( $this->inner_content as $chunk ) {
			if ( is_string( $chunk ) ) {
				$block_content .= $chunk;
			} else {
				$inner_block  = $this->inner_blocks[ $index ];
				$parent_block = $this;

				/** This filter is documented in wp-includes/blocks.php */
				$pre_render = apply_filters( 'pre_render_block', null, $inner_block->parsed_block, $parent_block );

				if ( ! is_null( $pre_render ) ) {
					$block_content .= $pre_render;
				} else {
					$source_block = $inner_block->parsed_block;

					/** This filter is documented in wp-includes/blocks.php */
					$inner_block->parsed_block = apply_filters( 'render_block_data', $inner_block->parsed_block, $source_block, $parent_block );

					/** This filter is documented in wp-includes/blocks.php */
					$inner_block->context = apply_filters( 'render_block_context', $inner_block->context, $inner_block->parsed_block, $parent_block );

					$block_content .= $inner_block->render();
				}

				$index++;
			}
		}
	}

	if ( $is_dynamic ) {
		$global_post = $post;
		$parent      = WP_Block_Supports::$block_to_render;

		WP_Block_Supports::$block_to_render = $this->parsed_block;

		$block_content = (string) call_user_func( $this->block_type->render_callback, $this->attributes, $block_content, $this );

		WP_Block_Supports::$block_to_render = $parent;

		$post = $global_post;
	}

	if ( ! empty( $this->block_type->script ) ) {
		wp_enqueue_script( $this->block_type->script );
	}

	if ( ! empty( $this->block_type->view_script ) && empty( $this->block_type->render_callback ) ) {
		wp_enqueue_script( $this->block_type->view_script );
	}

	if ( ! empty( $this->block_type->style ) ) {
		wp_enqueue_style( $this->block_type->style );
	}

	/**
	 * Filters the content of a single block.
	 *
	 * @since 5.0.0
	 * @since 5.9.0 The `$instance` parameter was added.
	 *
	 * @param string   $block_content The block content about to be appended.
	 * @param array    $block         The full block, including name and attributes.
	 * @param WP_Block $instance      The block instance.
	 */
	$block_content = apply_filters( 'render_block', $block_content, $this->parsed_block, $this );

	/**
	 * Filters the content of a single block.
	 *
	 * The dynamic portion of the hook name, `$name`, refers to
	 * the block name, e.g. "core/paragraph".
	 *
	 * @since 5.7.0
	 * @since 5.9.0 The `$instance` parameter was added.
	 *
	 * @param string   $block_content The block content about to be appended.
	 * @param array    $block         The full block, including name and attributes.
	 * @param WP_Block $instance      The block instance.
	 */
	$block_content = apply_filters( "render_block_{$this->name}", $block_content, $this->parsed_block, $this );

	return $block_content;
}