python - Django 从数据库中获取数据的表单

Question

我正在尝试创建一个允许用户编辑其个人资料数据的表单。因此，我希望当用户编辑表单时显示数据库中的最新数据。这是我到目前为止所拥有的:

# models.py
class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    location = models.CharField(max_length=30, blank=True)
    birthdate = models.DateField(null=True, blank=True)

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

# forms.py
class EditProfileForm(forms.ModelForm):
    class Meta:
        model = Profile
        fields = ['location', 'birthdate']

# views.py
class EditProfileFormView(View):
    form_class = EditProfileForm
    template_name = 'forums/edit-profile.html'

    def get(self, request, username):

        try:
            user = User.objects.get(username=username)
        except User.DoesNotExist:
            raise Http404('The User "' + username + '" could not be found.')

        if (not request.user.is_authenticated):
            return HttpResponseForbidden()
        elif (user.id is not request.user.id):
            return HttpResponseForbidden()

        form = self.form_class(None)
        return render(request, self.template_name, {'form': form})

将表单设置为 form_class(None) 会给我一个空表单，但是将 user.profile 放在同一位置会给我一个错误“Profile”对象没有属性“get”

Answer 1

尝试使用实例填充表单

form = self.form_class(instance=user.profile)

注意:使用标准 UpdateView 可能会更容易