基于外键的Django过滤

Question

I need to get all the orders except orders with order_type =14 (order table has a foreign key reference to order_type and batch tables) when i am calling the url. Please help me to know the solution.

#models.py

class Batch(models.Model):
        batchnum = models.TextField(null=True, blank=True)
        otp= models.TextField(null=True, blank=True)

class Order(models.Model):
    reqnum = models.TextField(null=True, blank=True)
    order_date = models.DateField(auto_now_add=True, null=True, blank=True)
    batch= models.ForeignKey(Batch, db_index=True,related_name='results', on_delete=models.PROTECT,null=True, blank=True)
    order_status = models.ForeignKey('DotOrderStatus', on_delete=models.SET_NULL, null=True,related_name='dot_order_status',default=1)
    order_type = models.ForeignKey('DotOrderType', on_delete=models.SET_NULL, null=True,related_name='dot_order_type',default=10)
    slno = models.TextField(null=True, blank=True)
    customer_name = models.TextField(null=True, blank=True)
    contact = models.BigIntegerField( null=True, blank=True)


url:localhost:8000/api/v1/batch/id 

where '/id' is batch id

Please help me to know the solution.

Thanks in advance.

Answer 1

You can use exclude in order not to include the order with ID 14:

batch_orders = batch.results.all().exclude(order_type__id=14)

Hope it helps.

Answer 2

使用exclude排除order_type id 14，并使用filter按批次ID进行过滤

Order.objects.exclude(order_type__id=14).filter(batch__id=id)

Answer 3

您可以这样进行。

Order.objects.filter(batch_id=id).exclude(order_type_id=14)