fix

alkatorapi/views.py

@@ -343,7 +343,7 @@ def products(request):
             'price': product.price,
             'quantity': product.quantity,
         }
-        for product in Product.objects.all()[1:]
+        for product in Product.objects.all()[1:] if product.quantity > 0
     ]), content_type='application/json')
 
 
@@ -366,6 +366,8 @@ def cart_add(request):
     except IntegrityError as e:
         cart_product = CartProduct.objects.get(cart=cart, product=product)
         cart_product.quantity += 1
+        if cart_product.quantity > product.quantity:
+            return HttpResponse('{"status": "failed", "reason": "Nemáme dostatek předmětů na skladě!"}')
         cart_product.save()
     return HttpResponse('{"status":"success", "reason":"Úspěšně přidáno do košíku."}', status=200)
 
@@ -376,13 +378,14 @@ def cart(request):
         return HttpResponse("[]")
     cart = []
     try:
-        for product in CartProduct.objects.filter(cart=user.cart):
+        for cart_product in CartProduct.objects.filter(cart=user.cart):
             cart.append({
-                "id": product.product.id,
+                'id': cart_product.product.id,
-                "name": product.product.name,
+                'name': cart_product.product.name,
-                "quantity": product.quantity,
+                'description': cart_product.product.description,
-                "price": product.product.price,
+                'quantity': cart_product.quantity,
-                "img": product.product.img.url,
+                'price': cart_product.product.price,
+                'img': cart_product.product.img.url,
             })
     except AttributeError:
         return HttpResponse("[]")