73 lines
1.8 KiB
PHP
73 lines
1.8 KiB
PHP
<?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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* 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 render_block_core_block( $attributes ) {
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static $seen_refs = array();
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if ( empty( $attributes['ref'] ) ) {
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return '';
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}
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$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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if ( isset( $seen_refs[ $attributes['ref'] ] ) ) {
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if ( ! is_admin() ) {
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trigger_error(
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sprintf(
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// translators: %s is the user-provided title of the reusable block.
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__( 'Could not render Reusable Block <strong>%s</strong>: blocks cannot be rendered inside themselves.' ),
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$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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// 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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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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if ( 'publish' !== $reusable_block->post_status || ! empty( $reusable_block->post_password ) ) {
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return '';
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}
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$seen_refs[ $attributes['ref'] ] = true;
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$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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* Registers the `core/block` block.
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*/
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function 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' => 'render_block_core_block',
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)
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);
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}
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add_action( 'init', 'register_block_core_block' );
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