更新 UserProfile（OneToOne 模型到 Django 用户模型）

Question

我是 Django 新手，正在创建一个带有帐户系统的 Django 项目。我用一对一的 UserProfile 模型扩展了 User 模型。

但是，我在保存 UserProfile 模型中的数据时遇到问题（保存到 User 模型没有问题）。我试图按照guide 修复它，但在 /account/login/ 遇到 AttributeError 'User' 对象没有属性 'UserProfile' 错误表示在 models.py 下 instance.UserProfile.save() 有错误

如何获取 UserProfile 表单以保存并修复此无属性错误？

models.py

from django.db import models
from django.contrib.auth.models import User
from django.dispatch import receiver
from django.db.models.signals import post_save
import datetime
from django.conf import settings

class UserProfile(models.Model):
        user = models.OneToOneField(
                User, 
                on_delete=models.CASCADE, 
                blank=True, 
                null=True, 
                unique=True,
                related_name='userprofile'
        )
        bio = models.CharField(max_length=200, default='', blank=True)
        campus = models.CharField(max_length=100, default='', blank=True)
        website = models.URLField(default='', blank=True)
        phone = models.IntegerField(default=0, blank=True)
        image = models.ImageField(upload_to='profile_image', blank=True)
        birthday = models.DateField(blank=True, default=datetime.date.today)
        gender = models.CharField(default='', blank=True, max_length=20)

        def __str__(self):
                return self.user.username

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

@receiver(post_save, sender=User)
def save_user_profile(sender, instance, **kwargs):
    instance.UserProfile.save()

forms.py

    # Edit User form
class EditProfileForm(UserChangeForm):

    class Meta:
        model = User
        fields = (
            'email',
            'first_name',
            'last_name',
            'password',
        )
# Edit User Profile form
class UserProfileForm(forms.ModelForm):

    class Meta:
        model = UserProfile
        fields = (
            'bio',
            'campus',
            'birthday',
            'gender',
            'website',
            'phone',
            'image',
        )

views.py

@login_required
@transaction.atomic
def edit_profile(request):
    if request.method == 'POST':
        user_form = EditProfileForm(request.POST, instance=request.user)
        profile_form = UserProfileForm(request.POST, instance=request.user.UserProfile.user)

        if user_form.is_valid() and profile_form.is_valid():
            user = user_form.save(commit=False)
            #user.username = user.email
            user.save()
            profile = profile_form.save(commit=False)
            profile.user = user
            profile.save()
            return redirect('/account/profile')
    else:
        profile_form = UserProfileForm(instance=request.user.userprofile)
        user_form = EditProfileForm(instance=request.user)
    args = {
        'user_form': user_form, # basic user form
        'profile_form': profile_form # user profile form
        }
    return render(request, 'accounts/edit_profile.html', args)

模板帐户/edit_profile.html

<form method="POST">
        {% csrf_token %}
        {{ user_form.as_p }}
        {{ profile_form.as_p }}
        <button type="submit">Submit</button>
    </form>

urls.py

url(r'^profile/edit/$', views.edit_profile, name='edit_profile')

解决方案：

在models.py中只有一个receiver并将else: instance.UserProfile().save()改为else: instance.userprofile().save()

@receiver(post_save, sender=User)
def create_or_update_user_profile(sender, instance, created, **kwargs):
    if created:
        UserProfile.objects.create(user=instance)
    else:
        instance.userprofile.save()

在 views.py 中修正拼写错误

将profile_form = UserProfileForm(request.POST, instance=request.user.UserProfile.user) 更改为profile_form = UserProfileForm(request.POST, instance=request.user.userprofile)

Answer 1

您有两个处理程序正在侦听同一信号 (post_save)，并且您的 save_user_profile 函数在 create_user_profile 找到机会创建 UserProfile 实例之前运行。

我建议将两个处理程序合并为一个，例如：

@receiver(post_save, sender=User)
def create_or_update_user_profile(sender, instance, created, **kwargs):
    if created:
        UserProfile.objects.create(user=instance)
    else:
        instance.userprofile.save()