Inheritance: extends Illuminate\Foundation\Http\FormRequest
 public function saveProductImages($product, ProductRequest $request)
 {
     $productAttribute = ProductAttribute::where('identifier', '=', 'image')->get()->first();
     $productAttribute->productVarcharValues()->where('product_id', '=', $product->id)->delete();
     if (count($request->get('image')) <= 0) {
         return true;
     }
     foreach ($request->get('image') as $image) {
         if (is_int($image)) {
             continue;
         }
         $productAttribute->productVarcharValues()->create(['product_id' => $product->id, 'website_id' => $this->websiteId, 'value' => $image]);
     }
 }