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我是 django 的新手，我正在为表单编写基于类的视图。问题是，此表单呈现良好，但发布时我的表单无效。

我不确定我应该怎么做才能让默认验证器验证表单。表单中有两个字段。一个是选择字段，它的选择是根据登录用户动态设置的。另一个是 CharField。不需要验证，因为 CharField 是自由文本，而 ChoiceField 是基于用户的数据。

表格.py

class HomeForm(forms.Form):
    phones= forms.ChoiceField(label='Select phone', choices = (), required=True)
    message = forms.CharField(max_length=10, required=True)

    def __init__(self, user, *args, **kwargs):
        super(HomeForm, self).__init__(*args, **kwargs)
        print >> sys.stderr, 'form init'

        self.fields['phones'].choices = [(ids.id, ids.phone_model.short_name) for ids in GCM_RegId.objects.filter(user=user)]

    def process(self, user):
        cd = self.cleaned_data
        regid_id = cd['phones'].value
        gcm_regid = GCM_RegId.objects.filter(id=regid_id)

视图.py

class HomeView(FormView):
    template_name = "home.html"
    form_class = HomeForm
    success_url = 'home'

    def post(self, request, *args, **kwargs):
        form_class = self.get_form_class()
        form = self.get_form(form_class)

        if(form.is_bound):
            print >> sys.stderr, "Form is Bound"
        else:
            print >> sys.stderr, "Form is NOT Bound"

        if form.is_valid():
            print >> sys.stderr, "Form Valid"
            return self.form_valid(form)
        else:
            print >> sys.stderr, "Form NOT Valid"
            return self.form_invalid(form, **kwargs)       

    def get_form(self, form_class):
        form = HomeForm(self.request.user, {})
        return form

    def form_valid(self, form):
        form.process(self.request.user)
        print >> sys.stderr, "RegIdSubmitView form_valid"
        return super(HomeView, self).form_valid(form)
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1 回答 1

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我想问题是当您创建表单实例时，您忘记将 request.POST 数据传递给您的表单类，get_form 方法应该是：

def get_form(self, form_class):
    form = HomeForm(self.request.user, data=self.request.POST)
    return form

或者，我认为 get_form 的更好方法是：

def get_form(self, form_class):
    return form_class(self.request.user, **self.get_form_kwargs()

查看 django.views.generic.edit.FormMixin 中 get_form_kwargs 方法的源代码，它会自动为您处理请求的 PUT/POST 数据和文件。

于 2012-08-02T06:31:25.837 回答