Question

我想在登录表单中添加验证码字段。因此，我编写了一个authentication_form，其中添加了charField以生成验证码，并将验证码保存到request.session。但是当我发送登录表单请求时，我在authentication_form中找不到会话的验证码和clean_data["verifycode"]，因为在调用我的authentication_form时Null中的请求。

class MyAuthenticationForm(AuthenticationForm):
    verifyimg = forms.CharField(label="verifycode", widget=vericonf.CaptchaWidget)


    def __init__(self, request=None, *args, **kwargs):
        self.request = request
        kwargs_new = {'error_class': DivErrorList}
        kwargs.update(kwargs_new)
        #elf.error_class = DivErrorList
        super(MyAuthenticationForm, self).__init__(*args, **kwargs)


    def as_div(self):
        "Returns this form rendered as HTML div."
        return self._html_output(
            normal_row=u'<div%(html_class_attr)s style="float:left;"><div class="formlabel">%(label)s</div><div class="formfield">%(field)s%(help_text)s</div><div class="formerror">%(errors)s</div></div>',
            error_row=u'<div>%s</div>',
            row_ender=u'</div></div>',
            help_text_html=u'<div style="float:left;"><span class="helptext">%s</span></div>',
            errors_on_separate_row=False)

    def clean_verifyimg(self):
        pass

    def clean(self):
        vericode = ""
        username = self.cleaned_data.get('username')
        password = self.cleaned_data.get('password')

        if self.request and self.request.session and self.request.session.get("verifyimg"):
            vericode = self.request.session.get("verifyimg")

        print vericode  ###HERE request.session is Null then I can't compare vericode and verify now.How to do it?

        verify = self.cleaned_data.get('verifyimg')
        print verify

        if username and password:
            self.user_cache = authenticate(username=username, password=password)
            if self.user_cache is None:
                raise forms.ValidationError(
                    _("Please enter a correct username and password. Note that both fields are case-sensitive."))
            elif not self.user_cache.is_active:
                raise forms.ValidationError(_("This account is inactive."))
        if verify and vericode:
            if verify != vericode:
                raise forms.ValidationError("verify code is wrong.pls Try again!")

        self.check_for_test_cookie()

        return self.cleaned_data

Answer 1

问题在于Django login view doesn't pass 'request' to 'authentication_form'当'request.method'为'POST'且'AuthenticationForm'需要'request'关键字参数时。

我用这种方式解决了这个问题：

将我的代码放入包装'django.contrib.auth.login'的视图中。

你仍然可以使用你的'MyAuthenticationForm'设置你的urls.py

url(r'^accounts/login/$',
        'myapp.views.custom_login',
        {'template_name': 'registration/login.html',
         'authentication_form': MyAuthenticationForm
        },
        name='auth_login'),

并将其置于views.py

中

def custom_login(request, *args, **kwargs):
    if request.method == 'POST':
        form = MyAuthenticationForm(data=request.POST, request=request)
        # Here you take care of your form validation and interaction with request

    return login(request, *args, **kwargs)

注意'data'和'request'参数必须是关键字参数。

Django自定义登录表单带有验证码字段，请求为NULL

1 个答案: