From 6f691680cf73b149158b8ed71ad58ec7114a5776 Mon Sep 17 00:00:00 2001
From: Stanislav Rimsha <stanislav.rimsha@gmail.com>
Date: Fri, 14 Jul 2017 15:57:47 +0200
Subject: [PATCH] Allow using zero-keys in Filter widget options

---
 modules/backend/widgets/Filter.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/backend/widgets/Filter.php b/modules/backend/widgets/Filter.php
index 37f5fe72a..1d66cd651 100644
--- a/modules/backend/widgets/Filter.php
+++ b/modules/backend/widgets/Filter.php
@@ -742,7 +742,8 @@ class Filter extends WidgetBase
         }
 
         foreach ($options as $option) {
-            if (!$id = array_get($option, 'id')) {
+            $id = array_get($option, 'id');
+            if ($id === null) {
                 continue;
             }
             $processed[$id] = array_get($option, 'name');