无法分配"<User: someuser>"："UserProfileInfo.user"必须是"User"实例

Question

[在这里输入图像描述][1]我不知道是什么导致这个错误，但我找不到任何解决方案。我检查了一切，一切似乎都很好，但我不知道为什么会发生这个错误。

Views.py

from django.contrib.auth import get_user_model
from django.shortcuts import render
from django.urls import reverse_lazy
from django.views.generic import CreateView,FormView
from . import forms
# Create your views here.
def signup(request):
if request.method =='POST':
user_create_form = forms.UserCreateForm(data=request.POST)
user_profile_form = forms.UserProfileInfoForm(data=request.POST)
if user_create_form.is_valid() and user_profile_form.is_valid():
user = user_create_form.save()
user.save()
profile = user_profile_form.save(commit=False)
profile.user = user
if 'profile_pic' in request.FILES:
profile.profile_pic = request.FILES['profile_pic']
profile.save()
else:
print(user_create_form.errors,user_profile_form.errors)
else:
user_create_form = forms.UserCreateForm()
user_profile_form = forms.UserProfileInfoForm()
return render(request,'accounts/signup.html',{'user_create_form':user_create_form,
'user_profile_form':user_profile_form})

Models.py

from django.db import models
from django.contrib import auth
# Create your models here.
class User(auth.models.User,auth.models.PermissionsMixin):
def __str__(self):
return "@{}".format(self.username)
class UserProfileInfo(models.Model):
user = models.OneToOneField(User,on_delete=models.CASCADE)
Contact_number =  models.IntegerField(blank=True)
joined_at = models.DateTimeField(auto_now=True)
profile_pic = models.ImageField(upload_to='profiles',blank=True)
def __str__(self):
return self.user.username + ' Profile'

Forms.py

from django.contrib.auth import get_user_model # this gets the model that is in the application
from django import forms
from django.contrib.auth.forms import UserCreationForm
from . import models
class UserCreateForm(UserCreationForm):
class Meta():
fields = ('username','email','password1','password2',)
model = get_user_model()
def  __init__(self,*args,**kwargs):
super().__init__(*args,**kwargs)
self.fields['username'].label = 'Display Name' # to set up a custom label for the field
self.fields['email'].label = "Email Address"
class UserProfileInfoForm(forms.ModelForm):
class Meta():
model = models.UserProfileInfo
fields = ('Contact_number','profile_pic')

无论我做什么，我都得到这个错误，我尝试引用其他类似的问题，但找不到任何解决这个错误的方法。请帮我解决这个问题。

Thanks in Advance !

图像的错误[1]: https://i.stack.imgur.com/HOcmf.png

Answer 1

您可以在您的模型中覆盖save()方法，以便在保存对象后返回一个模型实例，例如:

class YourModel(models.Model):
name = models.CharField(max_length=20)
def save(self, *args, **kwargs):
super(YourModel, self).save(*args, **kwargs) 
return self
your_model_saved_instance = YourModel(name='example').save()

那么你将从用户类而不是表单类接收一个实例

user = user.save()