django：尝试保存时必须是用户实例，但它是！ [英] django: must be a User Instance when trying to save, but it is!

问题描述

我确定这可能是一个简单的答案，但我看不到任何错误！

我只是想保存一个记录，而它的说法无法分配< User：jason.kinnear>：Confirmation.user必须是User实例。

这是代码：

  u = User.objects.get（pk = 18）
 cr =确认（ details ='...'，user = u）.save（）
  

提前感谢

编辑：
确认模型定义

 类确认（ model.Model）：
 number = models.IntegerField（null = True，blank = True）
 user = models.ForeignKey（'User'）
 details = models.CharField（max_length = 250 ）
 time = models.DateTimeField（auto_now_add = True）
  

p>

  user = models.ForeignKey（'User'）
  

和

  user = models.Fo reignKey（User）
  

我不太确定这个区别是诚实的

编辑2：
用户类已经如下扩展：

  from django .contrib.auth.models import User as BaseUser 
 class User（BaseUser）：
额外的用户信息
 location = models.ForeignKey（'Location'，null = True ，blank = True）
 defaults = models.CharField（null = True，blank = True）
  

解决方案

只是这个问题有一个答案，Ignacio是正确的（在评论中）。导入的用户不一样。 Django 用户被扩展为另一个用户类，我正在导入错误的一个。 （Ignacio，如果你想发表一个答案，我会做出接受的答案）

Im sure this is probably a simple answer, but I cannot see anything wrong with this!

Im just trying to save a record, and its saying Cannot assign "<User: jason.kinnear>": "Confirmation.user" must be a "User" instance.

This is the code:

u = User.objects.get(pk=18)    
cr = Confirmation(details='...', user=u).save()

Thanks in advance

EDIT: Model Definition for Confirmation

class Confirmation(models.Model):
    number = models.IntegerField(null=True, blank=True)
    user = models.ForeignKey('User')
    details = models.CharField(max_length=250)
    time = models.DateTimeField(auto_now_add=True)

I have tried both

user = models.ForeignKey('User')

and

user = models.ForeignKey(User)

Im not too sure of the difference to be honest

EDIT 2: The User class has been extended like this:

from django.contrib.auth.models import User as BaseUser
class User(BaseUser):
    """Extra user information"""    
    location = models.ForeignKey('Location', null=True, blank=True)
    defaults = models.CharField(null=True, blank=True)

解决方案

Just so this question has an answer, Ignacio was correct (in the comments). The imported User was not the same. The Django User was extended with another User class and I was importing the wrong one. (Ignacio, if you would like to post an answer I will make that the accepted answer)

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