addItems

public function addItem(Requests\Frontend\addProductToCart $request)
    {
        if ($this->cart->getItemsCount() > 1) {
            $product = $this->productRepository->model->with('parent')->find($request->product_id);
            $parentCategory = $product->parent->first();
            $cartItemIds = $this->cart->getItems()->pluck('id')->toArray();

            if ($parentCategory->limited) {
                $cartProducts = $this->productRepository->model->with('parent')->whereIn('id', $cartItemIds)->get();
                $parentCategories = $cartProducts->pluck('parent')->flatten();
                $categoryItems = $parentCategories->where('id', $parentCategory->id)->count();
                if ($categoryItems >= 2) {
                    return redirect()->route('cart.index')->with('error', trans('general.messages.error.cart.perfumes'));
                }
            }
        }
        $this->cart->addItem([
                'id' => $request->product_id,
                'quantity' => (int)$request->quantity,
                'product_attribute_id' => (int)$request->product_attribute_id]
        );
        return redirect()->route('cart.index')->with('success', trans('cart.updated'));
    }