Gravity Perks // Nested Forms // Preview Files Uploaded With GP Media Library

gp-nested-forms-preview-files.php

<?php
/**
 * WARNING! THIS SNIPPET MAY BE OUTDATED.
 * The latest version of this snippet can be found in the Gravity Wiz Snippet Library:
 * https://github.com/gravitywiz/snippet-library/blob/master/gravity-forms/gw-current-time-merge-tags.php
 */
/**
 * Gravity Perks // Nested Forms // Preview Files Uploaded With GP Media Library
 *
 * @version   1.0
 * @author    Scott Buchmann <scott@gravitywiz.com>
 * @license   GPL-2.0+
 * @link      http://gravitywiz.com/...
 * @copyright 2020 Gravity Wiz
 */
// Update "123" with your form ID.
add_action( 'gpnf_fileupload_display_value_123', function ( $value ) {

	$url = attachment_url_to_postid( $value['value'] );
	$thumb = wp_get_attachment_image_src( $url );

	$value['label'] = '<img src="' . $thumb[0] . '" >';

	return $value;

}, 10, 2 );

👉 This Gist has been migrated to the Gravity Wiz Snippet Library:

https://github.com/gravitywiz/snippet-library/blob/master/gravity-forms/gw-current-time-merge-tags.php