<?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 ];
$query_args = build_query_vars_from_query_block( $block, $page );
// Override the custom query with the global query if needed.
$use_global_query = ( isset( $block->context['query']['inherit'] ) && $block->context['query']['inherit'] );
if ( $use_global_query ) {
global $wp_query;
if ( $wp_query && isset( $wp_query->query_vars ) && is_array( $wp_query->query_vars ) ) {
// Unset `offset` because if is set, $wp_query overrides/ignores the paged parameter and breaks pagination.
unset( $query_args['offset'] );
$query_args = wp_parse_args( $wp_query->query_vars, $query_args );
if ( empty( $query_args['post_type'] ) && is_singular() ) {
$query_args['post_type'] = get_post_type( get_the_ID() );
}
}
}
$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();
$block_content = (
new WP_Block(
$block->parsed_block,
array(
'postType' => get_post_type(),
'postId' => get_the_ID(),
)
)
)->render( array( 'dynamic' => false ) );
$post_classes = implode( ' ', get_post_class( 'wp-block-post' ) );
$content .= '<li class="' . esc_attr( $post_classes ) . '">' . $block_content . '</li>';
}
wp_reset_postdata();
return sprintf(
'<ul %1$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' );