WP - How to get the post ID in vc_gitem_post_meta.php

Question

I'm using Visual Composer in my Wordpress site. I need to get the ID of the post which is rendered by grid builder (VC).

In this file, i tried the following things in this file: vc_gitem_post_meta.php:

$post = get_post();
$postid = $post->ID;
$id = get_the_ID();
$idloop = $wp_query->post->ID;

All of them are returning an empty result.

Any ideas?

Thanks for looking at the problem.