_block_bindings_post_meta_get_value

WordPress Version: 6.5

/**
 * Post Meta source for the block bindings.
 *
 * @since 6.5.0
 * @package WordPress
 * @subpackage Block Bindings
 */
/**
 * Gets value for Post Meta source.
 *
 * @since 6.5.0
 * @access private
 *
 * @param array    $source_args    Array containing source arguments used to look up the override value.
 *                                 Example: array( "key" => "foo" ).
 * @param WP_Block $block_instance The block instance.
 * @return mixed The value computed for the source.
 */
function _block_bindings_post_meta_get_value(array $source_args, $block_instance)
{
    if (empty($source_args['key'])) {
        return null;
    }
    if (empty($block_instance->context['postId'])) {
        return null;
    }
    $post_id = $block_instance->context['postId'];
    // If a post isn't public, we need to prevent unauthorized users from accessing the post meta.
    $post = get_post($post_id);
    if (!is_post_publicly_viewable($post) && !current_user_can('read_post', $post_id) || post_password_required($post)) {
        return null;
    }
    // Check if the meta field is protected.
    if (is_protected_meta($source_args['key'], 'post')) {
        return null;
    }
    // Check if the meta field is registered to be shown in REST.
    $meta_keys = get_registered_meta_keys('post', $block_instance->context['postType']);
    // Add fields registered for all subtypes.
    $meta_keys = array_merge($meta_keys, get_registered_meta_keys('post', ''));
    if (empty($meta_keys[$source_args['key']]['show_in_rest'])) {
        return null;
    }
    return get_post_meta($post_id, $source_args['key'], true);
}