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<?php |
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/** |
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* Server-side rendering of the `core/block` block. |
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* |
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* @package WordPress |
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*/ |
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|
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/** |
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* Renders the `core/block` block on server. |
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* |
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* @param array $attributes The block attributes. |
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* |
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* @return string Rendered HTML of the referenced block. |
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*/ |
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function gutenberg_render_block_core_block( $attributes ) { |
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static $seen_refs = array(); |
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|
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if ( empty( $attributes['ref'] ) ) { |
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return ''; |
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} |
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|
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$reusable_block = get_post( $attributes['ref'] ); |
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if ( ! $reusable_block || 'wp_block' !== $reusable_block->post_type ) { |
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return ''; |
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} |
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|
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if ( isset( $seen_refs[ $attributes['ref'] ] ) ) { |
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if ( ! is_admin() ) { |
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trigger_error( |
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sprintf( |
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// translators: %s is the user-provided title of the reusable block. |
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__( 'Could not render Reusable Block <strong>%s</strong>. Block cannot be rendered inside itself.' ), |
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$reusable_block->post_title |
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), |
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E_USER_WARNING |
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); |
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} |
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|
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// WP_DEBUG_DISPLAY must only be honored when WP_DEBUG. This precedent |
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// is set in `wp_debug_mode()`. |
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$is_debug = defined( 'WP_DEBUG' ) && WP_DEBUG && |
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defined( 'WP_DEBUG_DISPLAY' ) && WP_DEBUG_DISPLAY; |
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|
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return $is_debug ? |
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// translators: Visible only in the front end, this warning takes the place of a faulty block. |
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__( '[block rendering halted]' ) : |
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''; |
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} |
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|
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if ( 'publish' !== $reusable_block->post_status || ! empty( $reusable_block->post_password ) ) { |
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return ''; |
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} |
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|
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$seen_refs[ $attributes['ref'] ] = true; |
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|
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$result = do_blocks( $reusable_block->post_content ); |
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unset( $seen_refs[ $attributes['ref'] ] ); |
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return $result; |
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} |
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|
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/** |
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* Registers the `core/block` block. |
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*/ |
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function gutenberg_register_block_core_block() { |
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register_block_type_from_metadata( |
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__DIR__ . '/block', |
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array( |
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'render_callback' => 'gutenberg_render_block_core_block', |
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) |
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); |
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} |
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add_action( 'init', 'gutenberg_register_block_core_block', 20 ); |
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|
