Make compatible with older versions of ACF5

acf-qtranslate.php

@@ -3,7 +3,7 @@
 Plugin Name: Advanced Custom Fields: qTranslate
 Plugin URI: http://github.com/funkjedi/acf-qtranslate
 Description: Provides multilingual versions of the text, text area, and wysiwyg fields.
-Version: 1.7.20
+Version: 1.7.21
 Author: funkjedi
 Author URI: http://funkjedi.com
 License: GPLv2 or later

readme.txt

@@ -3,8 +3,8 @@ Contributors: funkjedi
 Tags: acf, advanced custom fields, qtranslate, add-on, admin
 Requires at least: 3.5.0
 Tested up to: 4.7.2
-Version: 1.7.20
-Stable tag: 1.7.20
+Version: 1.7.21
+Stable tag: 1.7.21
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
@@ -54,6 +54,9 @@ The plugin is based on code samples posted to the ACF support forums by taeo bac
 
 == Changelog ==
 
+= 1.7.21 =
+* Bug Fix: Make compatible with older versions of ACF5 by checking for `acf_connect_attachment_to_post`
+
 = 1.7.20 =
 * Core: Added ability to display LSBs on specific pages
 

src/acf_5/fields/file.php

@@ -205,14 +205,16 @@ function update_value($values, $post_id, $field) {
 		// validate
 		if ( !is_array($values) ) return false;
 
-		foreach ($values as $value) {
+		if (function_exists('acf_connect_attachment_to_post')) {
+			foreach ($values as $value) {
 
-			// bail early if not attachment ID
-			if( !$value || !is_numeric($value) ) continue;
+				// bail early if not attachment ID
+				if( !$value || !is_numeric($value) ) continue;
 
-			// maybe connect attacments to post
-			acf_connect_attachment_to_post( (int) $value, $post_id );
+				// maybe connect attacments to post
+				acf_connect_attachment_to_post( (int) $value, $post_id );
 
+			}
 		}
 
 		return qtrans_join($values);