Question

我想用ajax视图验证一些表单。

class ProfileEditPasswordForm(PasswordChangeForm):
    class Meta:
        model = User

class AjaxValidation(generic.edit.FormView):
    def get(self, request, *args, **kwargs):
        return HttpResponseRedirect('/')

    def form_invalid(self, form):
        data = []
        for k, v in form._errors.iteritems():
            text = {
                'desc': ', '.join(v),
            }
            if k == '__all__':
                text['key'] = '#%s' % self.request.POST.get('form')
            else:
                text['key'] = '#id_%s' % k
            data.append(text)
        return HttpResponse(json.dumps(data))

    def form_valid(self, form):
        return HttpResponse("ok")

    def get_form_class(self):
        form_dict = {
            'signup': forms.RegisterForm,
            'signin': forms.LoginForm,
            'safety': forms.ProfileEditPasswordForm
        }
        return form_dict[self.request.POST.get('form')] #=> TypeError

如您所见，我有3种不同的形式。前两个工作就好了。但第三个给我一个错误。

__init__() takes at least 2 arguments (1 given)

我相信这是因为我的表单要求用户验证他的旧密码，所以我这样做了：

'safety': forms.ProfileEditPasswordForm(user=self.request.user)

并且知道它会引发另一个错误：

'ProfileEditPasswordForm' object is not callable

在这里我卡住了。

Traceback:
File "***/env/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "***/env/local/lib/python2.7/site-packages/django/views/generic/base.py" in view
  71.             return self.dispatch(request, *args, **kwargs)
File "***/env/local/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  89.         return handler(request, *args, **kwargs)
File "***/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in post
  213.         form = self.get_form()
File "***/env/local/lib/python2.7/site-packages/django/views/generic/edit.py" in get_form
  74.         return form_class(**self.get_form_kwargs())

Exception Type: TypeError at /accounts/validate/
Exception Value: 'ProfileEditPasswordForm' object is not callable
Request information:
GET: No GET data

POST:
csrfmiddlewaretoken = u'MjSRpY4NQsTuv6hG8HLYZYI3n9HpPU4R'
form = u'safety'
old_password = u''
new_password1 = u''
new_password2 = u''

Answer 1

我认为问题是django FormView与PasswordChangeForm不兼容。表单要求将用户传递给其构造函数，但视图不会这样做。您可以尝试覆盖get_form_kwargs这样的方法：

class AjaxValidation(generic.edit.FormView):
    # your methods
    def get_form_kwargs(self):
        kwargs = super(AjaxValidation, self).get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs

kwargs将传递给表单构造函数，它应该可以工作。您的主代码示例中的get_form_class正常

如何ajaxable验证PasswordChangeForm？

1 个答案: