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- <?php
- /**
- * Server-side rendering of the `core/post-template` block.
- *
- * @package WordPress
- */
- /**
- * Determines whether a block list contains a block that uses the featured image.
- *
- * @param WP_Block_List $inner_blocks Inner block instance.
- *
- * @return bool Whether the block list contains a block that uses the featured image.
- */
- function block_core_post_template_uses_featured_image( $inner_blocks ) {
- foreach ( $inner_blocks as $block ) {
- if ( 'core/post-featured-image' === $block->name ) {
- return true;
- }
- if (
- 'core/cover' === $block->name &&
- ! empty( $block->attributes['useFeaturedImage'] )
- ) {
- return true;
- }
- if ( $block->inner_blocks && block_core_post_template_uses_featured_image( $block->inner_blocks ) ) {
- return true;
- }
- }
- return false;
- }
- /**
- * Renders the `core/post-template` block on the server.
- *
- * @param array $attributes Block attributes.
- * @param string $content Block default content.
- * @param WP_Block $block Block instance.
- *
- * @return string Returns the output of the query, structured using the layout defined by the block's inner blocks.
- */
- function render_block_core_post_template( $attributes, $content, $block ) {
- $page_key = isset( $block->context['queryId'] ) ? 'query-' . $block->context['queryId'] . '-page' : 'query-page';
- $page = empty( $_GET[ $page_key ] ) ? 1 : (int) $_GET[ $page_key ];
- // Use global query if needed.
- $use_global_query = ( isset( $block->context['query']['inherit'] ) && $block->context['query']['inherit'] );
- if ( $use_global_query ) {
- global $wp_query;
- $query = clone $wp_query;
- } else {
- $query_args = build_query_vars_from_query_block( $block, $page );
- $query = new WP_Query( $query_args );
- }
- if ( ! $query->have_posts() ) {
- return '';
- }
- if ( block_core_post_template_uses_featured_image( $block->inner_blocks ) ) {
- update_post_thumbnail_cache( $query );
- }
- $classnames = '';
- if ( isset( $block->context['displayLayout'] ) && isset( $block->context['query'] ) ) {
- if ( isset( $block->context['displayLayout']['type'] ) && 'flex' === $block->context['displayLayout']['type'] ) {
- $classnames = "is-flex-container columns-{$block->context['displayLayout']['columns']}";
- }
- }
- $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classnames ) );
- $content = '';
- while ( $query->have_posts() ) {
- $query->the_post();
- // Get an instance of the current Post Template block.
- $block_instance = $block->parsed_block;
- // Set the block name to one that does not correspond to an existing registered block.
- // This ensures that for the inner instances of the Post Template block, we do not render any block supports.
- $block_instance['blockName'] = 'core/null';
- // Render the inner blocks of the Post Template block with `dynamic` set to `false` to prevent calling
- // `render_callback` and ensure that no wrapper markup is included.
- $block_content = (
- new WP_Block(
- $block_instance,
- array(
- 'postType' => get_post_type(),
- 'postId' => get_the_ID(),
- )
- )
- )->render( array( 'dynamic' => false ) );
- // Wrap the render inner blocks in a `li` element with the appropriate post classes.
- $post_classes = implode( ' ', get_post_class( 'wp-block-post' ) );
- $content .= '<li class="' . esc_attr( $post_classes ) . '">' . $block_content . '</li>';
- }
- /*
- * Use this function to restore the context of the template tags
- * from a secondary query loop back to the main query loop.
- * Since we use two custom loops, it's safest to always restore.
- */
- wp_reset_postdata();
- return sprintf(
- '<ul %1$s>%2$s</ul>',
- $wrapper_attributes,
- $content
- );
- }
- /**
- * Registers the `core/post-template` block on the server.
- */
- function register_block_core_post_template() {
- register_block_type_from_metadata(
- __DIR__ . '/post-template',
- array(
- 'render_callback' => 'render_block_core_post_template',
- 'skip_inner_blocks' => true,
- )
- );
- }
- add_action( 'init', 'register_block_core_post_template' );
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