Filter: bricks/query_filters/index_user/meta_exists

Determines if a custom field (meta key) exists for a specific user during the indexing process. This is used when a third-party provider (like ACF or Meta Box) is selected, to avoid indexing empty or non-existent fields for users.

Parameters

• $exists (bool): Whether the meta key exists. Default is false.
• $user_id (int): The ID of the user being checked.
• $meta_key (string): The meta key of the custom field.
• $provider (string): The data provider (e.g., acf, metabox).

Example usage

add_filter( 'bricks/query_filters/index_user/meta_exists', function( $exists, $user_id, $meta_key, $provider ) {
    // Example: Custom check for a serialized meta field on a user
    if ( $meta_key === 'user_custom_data' ) {
        $data = get_user_meta( $user_id, $meta_key, true );
        return ! empty( $data );
    }

    return $exists;
}, 10, 4 );