结合用户和个人资料时，signals.py上的AttributeError

如何解决结合用户和个人资料时，signals.py上的AttributeError

在signals.py包含的注册模板表格上将用户与自定义配置文件合并后，可以与用户模型同步。为知识库提供了在OnetoOneFiedld上将related_name添加到models.py的解决方案，问题仍然存在。

    AttributeError at /createuser
'User' object has no attribute 'profile'
Request Method: POST
Request URL:    http://127.0.0.1:8000/createuser
Django Version: 3.1.2
Exception Type: AttributeError
Exception Value:    
'User' object has no attribute 'profile'
Exception Location: D:\Dev\main0\main\accounts\signals.py,line 16,in update_profile
Python Executable:  D:\Dev\main0\venv\Scripts\python.exe
Python Version: 3.8.5
Python Path:    
['D:\\Dev\\main0\\main','D:\\Dev\\main0\\venv\\Scripts\\python38.zip','c:\\python38\\DLLs','c:\\python38\\lib','c:\\python38','D:\\Dev\\main0\\venv','D:\\Dev\\main0\\venv\\lib\\site-packages']
Server time:    Sun,01 Nov 2020 14:34:42 +000

我试图找出导致错误的根本原因 这是Signals.py文件

@receiver(post_save,sender=User) 
def create_profile(sender,instance,created,**kwargs):
    if created:
        Profile.objects.create(user=instance)


@receiver(post_save,sender=User) 
def update_profile(sender,**kwargs):
    if created == False:
        instance.profile.save()

和views.py

def CreateUser(request):
if request.method == 'POST':
    first_name = request.POST['first_name']
    last_name = request.POST['last_name']
    username = request.POST['username']
    password = request.POST['password1']
    repassword = request.POST['password2']
    email = request.POST['email']

    if password == repassword:
        if User.objects.filter(username=username).exists():
            messages.error(request,f'User {username} already existed!!!')
            return redirect('register-page')
        elif User.objects.filter(email=email).exists():
            messages.error(request,f'email {email} already existed!!!')
            return redirect('register-page')
        else:
            user = User.objects.create_user(
                username=username,password=password,email=email,first_name=first_name,last_name=last_name
                )
            user.save()
            profile = Profile.objects.create(
                gender=gender,date_of_birth=date_of_birth,phone_number=phone_number,photo=photo
                )
            profile.user = user
            profile.save()           
            messages.success(request,f'User {username} has been created successfully!!')
            return redirect('main-users-page')
    else:
        messages.info(request,'password does not match')
        return redirect('register-page')
else:
    return render(request,'registration/register.html')

解决方法

添加有关信号细节的解决方案。py

    @receiver(post_save,sender=User) 
def create_profile(sender,instance,created,**kwargs):
    if created:
        Profile.objects.create(user=instance)
        

    post_save.connect(create_profile,sender=User)
    
    @receiver(post_save,sender=User) 
    def update_profile(sender,**kwargs):
        if created == False:
            instance.profile.save()
            print('Profile updated!!')
    
    post_save.connect(update_profile,sender=User)