Question

型号：

class MasterDishList(models.Model):
    dishid = models.AutoField(primary_key=True)
    dishname = models.CharField(max_length=100)
    username = models.ForeignKey(User)
    dishprice = models.IntegerField()

如果我尝试：

objectoadd = MasterDishList.objects.create(dishname="somename", dishprice=100, username=userobject)

我明白了：

/home/abd/Development/Projects/misc/fadster-backend/djangotoolbox/db/basecompiler.pyc in execute_sql(self, return_id)
    581                 if value is None and not field.null and not field.primary_key:
    582                     raise IntegrityError("You can't set %s (a non-nullable "
--> 583                                          "field) to None!" % field.name)
    584 
    585                 # Prepare value for database, note that query.values have

IntegrityError: You can't set dishid (a non-nullable field) to None!

这显然是个错误吗？或者我错过了什么？我可以使用的任何解决方法吗？

Answer 1

您的主键似乎与默认键相同。建议不要指定字段，因为它将由django自动添加：

Automatic primary key fields

您可以将模型保留为：

class MasterDishList(models.Model):
    dishname = models.CharField(max_length=100)
    username = models.ForeignKey(User)
    dishprice = models.IntegerField()

AutoField无法在Django-nonrel中运行

1 个答案: