_block_bindings_post_meta_get_value()WP 6.5.0

Gets value for Post Meta source.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

No Hooks.

Return

Mixed. The value computed for the source.

Usage

_block_bindings_post_meta_get_value( $source_args, $block_instance );
$source_args(array) (required)
Array containing source arguments used to look up the override value. Example: array( "key" => "foo" ).
$block_instance(WP_Block) (required)
The block instance.

Changelog

Since 6.5.0 Introduced.

_block_bindings_post_meta_get_value() code WP 6.5.3

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 );
}