WP_Block::render( array $options = array() ): string

Source

public function render( $options = array() ) {
	global $post;

	/*
	 * There can be only one root interactive block at a time because the rendered HTML of that block contains
	 * the rendered HTML of all its inner blocks, including any interactive block.
	 */
	static $root_interactive_block = null;
	/**
	 * Filters whether Interactivity API should process directives.
	 *
	 * @since 6.6.0
	 *
	 * @param bool $enabled Whether the directives processing is enabled.
	 */
	$interactivity_process_directives_enabled = apply_filters( 'interactivity_process_directives', true );
	if (
		$interactivity_process_directives_enabled && null === $root_interactive_block && (
			( isset( $this->block_type->supports['interactivity'] ) && true === $this->block_type->supports['interactivity'] ) ||
			! empty( $this->block_type->supports['interactivity']['interactive'] )
		)
	) {
		$root_interactive_block = $this;
	}

	$options = wp_parse_args(
		$options,
		array(
			'dynamic' => true,
		)
	);

	// Process the block bindings and get attributes updated with the values from the sources.
	$computed_attributes = $this->process_block_bindings();
	if ( ! empty( $computed_attributes ) ) {
		// Merge the computed attributes with the original attributes.
		$this->attributes = array_merge( $this->attributes, $computed_attributes );
	}

	$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 ( ! empty( $computed_attributes ) && ! empty( $block_content ) ) {
		foreach ( $computed_attributes as $attribute_name => $source_value ) {
			$block_content = $this->replace_html( $block_content, $attribute_name, $source_value );
		}
	}

	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_handles ) ) ) {
		foreach ( $this->block_type->script_handles as $script_handle ) {
			wp_enqueue_script( $script_handle );
		}
	}

	if ( ! empty( $this->block_type->view_script_handles ) ) {
		foreach ( $this->block_type->view_script_handles as $view_script_handle ) {
			wp_enqueue_script( $view_script_handle );
		}
	}

	if ( ! empty( $this->block_type->view_script_module_ids ) ) {
		foreach ( $this->block_type->view_script_module_ids as $view_script_module_id ) {
			wp_enqueue_script_module( $view_script_module_id );
		}
	}

	if ( ( ! empty( $this->block_type->style_handles ) ) ) {
		foreach ( $this->block_type->style_handles as $style_handle ) {
			wp_enqueue_style( $style_handle );
		}
	}

	if ( ( ! empty( $this->block_type->view_style_handles ) ) ) {
		foreach ( $this->block_type->view_style_handles as $view_style_handle ) {
			wp_enqueue_style( $view_style_handle );
		}
	}

	/**
	 * 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.
	 * @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.
	 * @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 );

	if ( $root_interactive_block === $this ) {
		// The root interactive block has finished rendering. Time to process directives.
		$block_content          = wp_interactivity_process_directives( $block_content );
		$root_interactive_block = null;
	}

	return $block_content;
}

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