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我在我的 Django 项目中使用基于类的视图来重置密码。我的表单只有一个字段，用户可以在那里写电子邮件地址或用户名。提交成功后，用户可以在同一页面看到成功消息。我的问题是提交后我看到空字段但同时我可以通过单击按钮再次发送数据。提交成功后如何清除表单域？我有点困惑。

视图.py

class PasswordResetRequestView(FormView):
    template_name = "registration/password_reset.html"
    success_url = '/account/password_reset'
    form_class = PasswordResetRequestForm

    @staticmethod
    def validate_email_address(email):
        try:
            validate_email(email)
            return True
        except ValidationError:
            return False

    def post(self, request, *args, **kwargs):
        global data
        form = self.form_class(request.POST)
        try:
            if form.is_valid():
                data = form.cleaned_data["email_or_username"]
            if self.validate_email_address(data) is True:
                associated_users = User.objects.filter(Q(email=data) | Q(username=data))
                if associated_users.exists():
                    for user in associated_users:
                        c = {
                            'email': user.email,
                            'domain': request.META['HTTP_HOST'],
                            'site_name': 'your site',
                            'uid': urlsafe_base64_encode(force_bytes(user.pk)),
                            'user': user,
                            'token': default_token_generator.make_token(user),
                            'protocol': 'http',
                        }
                        subject_template_name = 'registration/password_reset_subject.txt'
                        email_template_name = 'registration/password_reset_email.html'
                        subject = loader.render_to_string(subject_template_name, c)
                        subject = ''.join(subject.splitlines())
                        email = loader.render_to_string(email_template_name, c)
                        send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)
                    result = self.form_valid(form)
                    messages.success(request, 'An email has been sent to ' +
                                     data + ". Please check its inbox to continue reseting password.")
                    return result
                result = self.form_invalid(form)
                messages.error(request, 'No user is associated with this email address')
                return result
            else:
                associated_users = User.objects.filter(username=data)
                if associated_users.exists():
                    for user in associated_users:
                        c = {
                            'email': user.email,
                            'domain': 'example.info',
                            'site_name': 'example',
                            'uid': urlsafe_base64_encode(force_bytes(user.pk)),
                            'user': user,
                            'token': default_token_generator.make_token(user),
                            'protocol': 'http',
                        }
                        subject_template_name = 'registration/password_reset_subject.txt'
                        email_template_name = 'registration/password_reset_email.html'
                        subject = loader.render_to_string(subject_template_name, c)
                        # Email subject *must not* contain newlines
                        subject = ''.join(subject.splitlines())
                        email = loader.render_to_string(email_template_name, c)
                        send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)
                    result = self.form_valid(form)
                    messages.success(request, 'Email has been sent to ' +
                                     data + "'s email address. Please check its inbox to continue reseting password.")
                    return result
                result = self.form_invalid(form)
                messages.error(request, _('This username does not exist in the system.'))
                return result
        except Exception as e:
            print(e)
        return self.form_invalid(form)
4

1 回答 1

2

首先，永远不要使用全局变量。

其次，您可以将您的帖子逻辑放入一个form.save()方法中。IMO 它在那里更合适，并且与PasswordResetFormDjango内部的操作很接近

这就是您的Form班级的样子：

class PasswordResetRequestForm(forms.Form):
    #We are not using EmailField on purpose
    #because you want to treat it
    #as a username if its not an email
    email = forms.CharField(required=True)

    def __init__(self, *args, **kwargs):
        #For sending emails we are gonna need the request.
        request = kwargs.pop('request')
        super(PasswordResetRequestForm, self).__init__(*args, **kwargs)

    def clean_email(self):
        #You can add form error here if no user exists
        email = self.cleaned_data['email']
        users = User.objects.filter(Q(email=email)|Q(username=email))
        if not users.exists():
            self.add_error('email', 'No associated account found')

    def send_email(self, user):
        c = {
            'email': user.email,
            'domain': self.request.META['HTTP_HOST'],
            'site_name': 'your site',
            'uid': urlsafe_base64_encode(force_bytes(user.pk)),
            'user': user,
            'token': default_token_generator.make_token(user),
            'protocol': 'http',
        }
        subject_template_name = 'registration/password_reset_subject.txt'
        email_template_name = 'registration/password_reset_email.html'
        subject = loader.render_to_string(subject_template_name, c)
        subject = ''.join(subject.splitlines())
        email = loader.render_to_string(email_template_name, c)
        send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)

    def save(self):
        email = self.cleaned_data['email']
        users = User.objects.filter(Q(email=email)|Q(username=email))

        for user in users:
            self.send_email(user)

        messages.success(self.request, """An email has been sent to %s. 
            Please check its inbox to continue reseting password.""" % email
        )

现在，View您只需发送requestas aform.kwarg并form.save()在 `form.is_valid() 时调用。

class PasswordResetRequestView(FormView):
    template_name = "registration/password_reset.html"
    success_url = '/account/password_reset'
    form_class = PasswordResetRequestForm

    def get_form_kwargs(self, *args, **kwargs):
        kwargs = super(PasswordResetRequestView, self).get_form_kwargs(*args, **kwargs)
        kwargs['request'] = self.request
        return kwargs

    def form_valid(self, *args, **kwargs):
        form = kwargs['form']
        form.save()
        return super(PasswordResetRequestView, self).form_valid(*args, **kwargs)
于 2016-08-12T07:23:06.220 回答