52 lines
1.5 KiB
PHP
52 lines
1.5 KiB
PHP
<?php
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/**
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* Server-side rendering of the `core/gallery` block.
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*
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* @package WordPress
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*/
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/**
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* Handles backwards compatibility for Gallery Blocks,
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* whose images feature a `data-id` attribute.
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*
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* Now that the Gallery Block contains inner Image Blocks,
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* we add a custom `data-id` attribute before rendering the gallery
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* so that the Image Block can pick it up in its render_callback.
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*
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* @param array $parsed_block The block being rendered.
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* @return array The migrated block object.
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*/
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function block_core_gallery_data_id_backcompatibility( $parsed_block ) {
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if ( 'core/gallery' === $parsed_block['blockName'] ) {
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foreach ( $parsed_block['innerBlocks'] as $key => $inner_block ) {
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if ( 'core/image' === $inner_block['blockName'] ) {
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if ( ! isset( $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] ) && isset( $inner_block['attrs']['id'] ) ) {
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$parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] = esc_attr( $inner_block['attrs']['id'] );
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}
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}
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}
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}
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return $parsed_block;
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}
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add_filter( 'render_block_data', 'block_core_gallery_data_id_backcompatibility' );
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/**
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* Registers the `core/gallery` block on server.
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* This render callback needs to be here
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* so that the gallery styles are loaded in block-based themes.
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*/
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function register_block_core_gallery() {
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register_block_type_from_metadata(
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__DIR__ . '/gallery',
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array(
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'render_callback' => function ( $attributes, $content ) {
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return $content;
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},
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)
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);
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}
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add_action( 'init', 'register_block_core_gallery', 20 );
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