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