sendrequest/bandit处的配置文件不能分配“‘ValueError’”："ConnectRequest.sender“必须是"Profile”实例

Question

我正在做一个好友请求功能，我不能保存我的数据，这个错误每次都会出现。这是我的views.py

def sendrequest(request,receiver):
receiver_user = Profile.objects.get(username=receiver).username
sender=request.user
sender_user=Profile.objects.get(username=sender).username
connection=ConnectRequest(sender=sender_user,
    receiver=receiver_user,
    status="Pending"
)
connection.save()
return redirect("buddylist")

这是我的Profile model

class Profile(models.Model):
idno=models.AutoField(primary_key=True)
name=models.CharField(max_length=30)
email=models.CharField(max_length=40)
username=models.CharField(max_length=30)

这是我的ConnectRequest model

class ConnectRequest(models.Model):
sender = models.ForeignKey(Profile, on_delete=models.CASCADE, related_name="sender")
receiver = models.ForeignKey(Profile,on_delete=models.CASCADE, related_name="receiver")
choice=(
    ("Accepted","Accepted"),
    ("Declined","Declined"),
    ("Pending","Pending")
)
status=models.CharField(max_length=10,choices=choice,blank=True)

def __str__(self):
    return f"{self.sender} to {self.receiver} status {self.status}"

Answer 1

sender_user=Profile.objects.get(username=sender).username

需要更改为

sender_user=Profile.objects.get(username=sender.username)

对于初学者来说。username需要是一个Charfield，但您给它提供的是一个用户实例request.user。

你需要改变

receiver_user = Profile.objects.get(username=receiver).username

至

receiver_user = Profile.objects.get(username=receiver)

因为当您将其传递给ConnectRequest时，它需要一个配置文件实例，而您为它提供了一个用户名