From c662bf8fc19ced99b8e9017b62246edb92350c1e Mon Sep 17 00:00:00 2001
From: Frederik Sauer <fritten.keez@gmail.com>
Date: Tue, 16 Nov 2021 14:53:44 +0100
Subject: [PATCH] Prevent dataLayer entries from being reset

---
 resources/views/head.blade.php | 6 ++++--
 src/GoogleTagManager.php       | 7 ++++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/resources/views/head.blade.php b/resources/views/head.blade.php
index f6a74b9..fe3130d 100644
--- a/resources/views/head.blade.php
+++ b/resources/views/head.blade.php
@@ -1,9 +1,11 @@
 @if($enabled)
 <script>
 window.dataLayer = window.dataLayer || [];
-dataLayer = [{!! $dataLayer->toJson() !!}];
+@unless(empty($dataLayer->toArray()))
+window.dataLayer.push({!! $dataLayer->toJson() !!});
+@endunless
 @foreach($pushData as $item)
-dataLayer.push({!! $item->toJson() !!});
+window.dataLayer.push({!! $item->toJson() !!});
 @endforeach
 </script>
 <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
diff --git a/src/GoogleTagManager.php b/src/GoogleTagManager.php
index 90df7c6..676f252 100644
--- a/src/GoogleTagManager.php
+++ b/src/GoogleTagManager.php
@@ -2,6 +2,7 @@
 
 namespace Spatie\GoogleTagManager;
 
+use Illuminate\Support\Collection;
 use Illuminate\Support\Traits\Macroable;
 
 class GoogleTagManager
@@ -41,7 +42,7 @@ public function __construct($id)
         $this->id = $id;
         $this->dataLayer = new DataLayer();
         $this->flashDataLayer = new DataLayer();
-        $this->pushDataLayer = new \Illuminate\Support\Collection();
+        $this->pushDataLayer = new Collection();
 
         $this->enabled = true;
     }
@@ -59,7 +60,7 @@ public function id()
     public function setId($id)
     {
         $this->id = $id;
-        
+
         return $this;
     }
 
@@ -160,7 +161,7 @@ public function getPushData()
     public function clear()
     {
         $this->dataLayer = new DataLayer();
-        $this->pushDataLayer = new \Illuminate\Support\Collection();
+        $this->pushDataLayer = new Collection();
     }
 
     /**