<?php
function render_block_core_block($attributes)
{
static $seen_refs = array();
if (empty($attributes['ref'])) {
return '';
}
$reusable_block = get_post($attributes['ref']);
if (!$reusable_block || 'wp_block' !== $reusable_block->post_type) {
return '';
}
if (isset($seen_refs[$attributes['ref']])) {
if (!is_admin()) {
trigger_error(sprintf(__('Could not render Reusable Block <strong>%s</strong>: blocks cannot be rendered inside themselves.'), $reusable_block->post_title), E_USER_WARNING);
}
$is_debug = defined('WP_DEBUG') && WP_DEBUG && defined('WP_DEBUG_DISPLAY') && WP_DEBUG_DISPLAY;
return $is_debug ? __('[block rendering halted]') : '';
}
if ('publish' !== $reusable_block->post_status || !empty($reusable_block->post_password)) {
return '';
}
$seen_refs[$attributes['ref']] = true;
$result = do_blocks($reusable_block->post_content);
unset($seen_refs[$attributes['ref']]);
return $result;
}
function register_block_core_block()
{
register_block_type_from_metadata(__DIR__ . '/block', array('render_callback' => 'render_block_core_block'));
}
add_action('init', 'register_block_core_block');