“AttributeError：'NoneType'对象没有属性'session'”在django allauth应用程序中覆盖SignupForm时

Question

我尝试使用 SignupForm override 实现 django allauth 应用程序，我的代码在将数据输入注册表单并保存用户时几乎可以工作，但保存后，我重定向到一个新页面，显示'NoneType' object has no attribute 'session' AttributeError。 我该如何解决？

urls.py

from django.urls import path
from .views import login, logout, AllauthSignUpView

app_name = 'register'
urlpatterns = [
    path('login/', login, name='login'),
    path('signup/', AllauthSignUpView.as_view(), name='signup'),
    path('logout/', logout, name='logout'),
]

views.py

覆盖SignupView如下：

from django.shortcuts import render, HttpResponseRedirect
from .form import AllauthLoginForm, AllauthSignUpForm
from allauth.account.views import SignupView
from django.urls import reverse_lazy

class AllauthSignUpView(SignupView):
    template_name = 'register/signup.html'
    form_class = AllauthSignUpForm
    success_url = reverse_lazy('core:home')  #Redirect to home.html

    def form_valid(self, form):
        # This method is called when valid form data has been POSTed.
        if form.is_valid():
            form.save()
            form.clean()
            return HttpResponseRedirect('core:home')   #Redirect to home.html
        # It should return an HttpResponse.
        return super().form_valid(form)

    def get_context_data(self, **kwargs):
        context = super(AllauthSignUpView, self).get_context_data(**kwargs)
        signUpForm = AllauthSignUpForm(self.request.POST or None)
        context['form'] = signUpForm
        return context

form.py

覆盖SignupForm如下：

from allauth.account.forms import LoginForm, SignupForm
from django import forms

class AllauthSignUpForm(SignupForm):
    def __init__(self, *args, **kwargs):
        super(AllauthSignUpForm, self).__init__(*args, **kwargs)
        self.fields['username'] = forms.CharField(
            label='',
            widget=forms.TextInput(
                attrs={
                    'class': 'signup_name_inp text-right mb-4 border-top-0 border-right-0 border-left-0',
                    'placeholder': 'نام کاربری',
                    'dir': 'rtl',
                }
            ),
        )
        self.fields['email'] = forms.EmailField(
            label='',
            widget=forms.EmailInput(
                attrs={
                    'class': 'signup_mail_inp text-right mb-4 border-top-0 border-right-0 border-left-0',
                    'placeholder': 'ایمیل (اختیاری)',
                    'dir': 'rtl',
                }
            )
        )
        self.fields['password1'] = forms.CharField(
            label='',
            widget=forms.PasswordInput(
                attrs={
                    'class': 'signup_pass_inp1 text-right mb-4 border-top-0 border-right-0 border-left-0',
                    'placeholder': 'کلمه عبور',
                    'dir': 'rtl',
                }
            )
        )
        self.fields['password2'] = forms.CharField(
            label='',
            widget=forms.PasswordInput(
                attrs={
                    'class': 'signup_pass_inp2 text-right mb-4 border-top-0 border-right-0 border-left-0',
                    'placeholder': 'تکرار کلمه عبور',
                    'dir': 'rtl'
                }
            )
        )
    def save(self, request=None):
        # Ensure you call the parent class's save.
        # .save() returns a User object.
        user = super(AllauthSignUpForm, self).save(request)

        # Add your own processing here.
        print(user.username)
        # You must return the original result.
        return user

signup.html

          <form dir='rtl' class="text-right border-0 p-5  bg-transparent" id="signup_form" method="post" action="{% url 'register:signup' %}" >
            {% csrf_token %}
              {{ form|crispy }}
            <div class="row">
              <div class="col-12">
                  <button class="btn btn-outline-info  btn-block z-depth-0 my-4 waves-effect rounded-pill" type="submit">{% trans "ثبت نام" %} &raquo;</button>
              </div>
              <div class="col-12">
                  <p class="float-right  mt-3" >آیا اکانت ساخته اید؟ <a class="font-weight-bold" href="{% url 'register:login' %}" style="color: #858585 !important;">وارد شوید</a>.</p>
              </div>
            </div>
          </form>

settings.py

ACCOUNTS_FORMS = {
    'login': 'registerations.form.AllauthLoginForm',
    'signup': 'registerations.form.AllauthSignUpForm',
    'add_email': 'allauth.account.forms.AddEmailForm',
    'change_password': 'allauth.account.forms.ChangePasswordForm',
    'set_password': 'allauth.account.forms.SetPasswordForm',
    'reset_password': 'allauth.account.forms.ResetPasswordForm',
    'reset_password_from_key': 'allauth.account.forms.ResetPasswordKeyForm',
    'disconnect': 'allauth.socialaccount.forms.DisconnectForm',
}

下面有一些有用的链接： help-1

Answer 1

您的代码似乎存在一些潜在问题，但可能导致您所述问题的主要问题是您没有将request 对象传递给form.save() 文件中的form.save() 调用。

它应该看起来更像这样：

def form_valid(self, form):

    # Don't do this. form_valid() only gets called on a valid form anyway
    # if form.is_valid():

    form.save(self.request)

    # No need to call form.clean() again, especially after already saving the form
    # form.clean()

    return HttpResponseRedirect('core:home')   #Redirect to home.html

因此，总而言之，您似乎并没有在您的自定义 form_valid() 函数中执行任何“自定义”操作，因此您最好完全删除它并仅使用父类中定义的函数。您已经指定了您的 success_url，因此您可以让 allauth 的 form_valid() 为您完成工作。