<?php
/**
* Server-side rendering of the `core/query-no-results` block.
*
* @package WordPress
*/
/**
* Renders the `core/query-no-results` 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 wrapper for the no results block.
*/
function render_block_core_query_no_results( $attributes, $content, $block ) {
if ( empty( trim( $content ) ) ) {
return '';
}
$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 ) ) {
$query_args = wp_parse_args( $wp_query->query_vars, $query_args );
}
}
$query = new WP_Query( $query_args );
if ( $query->have_posts() ) {
return '';
}
wp_reset_postdata();
return sprintf(
'<div %1$s>%2$s</div>',
get_block_wrapper_attributes(),
$content
);
}
/**
* Registers the `core/query-no-results` block on the server.
*/
function register_block_core_query_no_results() {
register_block_type_from_metadata(
__DIR__ . '/query-no-results',
array(
'render_callback' => 'render_block_core_query_no_results',
)
);
}
add_action( 'init', 'register_block_core_query_no_results' );