how to deleting extra OrderItems in Orders admin panel? - django

Question

this is my order admin. when a customer reserve a product it goes to order item section in the down. but there are some extra order items that they are empty. i want to when a customer adds a product just that product be in the admin panel. how i can remove that empty order items???
model:
class Order(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL,
on_delete=models.CASCADE, related_name='orders')
ref_code = models.CharField(max_length=20, blank=True, null=True)
# products = models.ManyToManyField(OrderItem)
address = models.ForeignKey(Address, on_delete=models.SET_NULL, null=True, blank=True, related_name='addresses')
created_date = models.DateTimeField(auto_now_add=True)
ordered_date = models.DateTimeField(null=True, blank=True)
ordered = models.BooleanField(default=False)
def __str__(self):
return self.user.full_name
class OrderItem(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL,
on_delete=models.CASCADE)
order = models.ForeignKey(Order, on_delete=models.CASCADE, related_name='products')
ordered = models.BooleanField(default=False)
product = models.ForeignKey(Product, on_delete=models.CASCADE)
quantity = models.PositiveSmallIntegerField(default=1)
def __str__(self):
return f"{self.quantity} of {self.product.name}"
serializer:
class OrderItemSerializer(serializers.ModelSerializer):
product = serializers.SerializerMethodField()
final_price = serializers.SerializerMethodField()
class Meta:
model = OrderItem
fields = (
'id',
'product',
'quantity',
'final_price'
)
def get_product(self, obj):
return ProductSerializer(obj.product).data
def get_final_price(self, obj):
return obj.get_final_price()
class OrderSerializer(serializers.ModelSerializer):
order_items = serializers.SerializerMethodField()
total = serializers.SerializerMethodField()
class Meta:
model = Order
fields = (
'id',
'order_items',
'total',
)
def get_order_items(self, obj):
return OrderItemSerializer(obj.products.all(), many=True).data
def get_total(self, obj):
return obj.total_price()

Answer 1

You need to change the TabularInline at admin.py file not serializers. extra = 0
class OrderItemInline(admin.TabularInline):
model = OrderItem
extra = 0
#admin.register(Order)
class OrderAdmin(admin.ModelAdmin):
inlines = [OrderItemInline]