仅显示当前用户的帖子 - 自定义帖子 - Wordpress

Question

I want to show posts ( under a custom post type ) only posted by the current logged in user.I have used this code for reservation and listings

Below here is the code

add_filter( 'parse_query', 'pre_order_posts_filter' );

function pre_order_posts_filter( $query ) {

    global $post_type;      

    if(is_admin()){
        $current_user = wp_get_current_user();
        if ( 'reservation' == $post_type ) {
            if ( in_array( 'shop_manager', $current_user->roles ) ) {
                $query->query_vars['meta_key'] = 'author_id';
                $query->query_vars['meta_value'] = $current_user->ID; 
                $query->query_vars['post_status'] = array('pending', 'publish');     
            }

        }
        elseif ( 'listings' == $post_type ) {

            if ( in_array( 'shop_manager', $current_user->roles ) ) {
                $query->query_vars['post_author'] = $current_user->ID;     
            }

        }
    }

}

Its working for reservation but not for listings.