Fix bug in getImageUrl method

Author: marcusmoore

app/Models/Asset.php

@@ -656,7 +656,7 @@ public function getImageUrl()
             return Storage::disk('public')->url(app('assets_upload_path').e($this->image));
         } elseif ($this->model && ! empty($this->model->image)) {
             return Storage::disk('public')->url(app('models_upload_path').e($this->model->image));
-        } elseif ($this->model->category && ! empty($this->model->category->image)) {
+        } elseif ($this->model?->category && ! empty($this->model->category->image)) {
             return Storage::disk('public')->url(app('categories_upload_path').e($this->model->category->image));
         }
 

tests/Unit/AssetTest.php

@@ -239,5 +239,11 @@ public function testGetImageUrlMethod()
         $category->save();
 
         $this->assertFalse($asset->refresh()->getImageUrl());
+
+        // handles case where model does not exist
+        $asset->model_id = 9999999;
+        $asset->forceSave();
+
+        $this->assertFalse($asset->refresh()->getImageUrl());
     }
 }