Django AttributeError: 'InterestsForm' object has no attribute '_errors'

Question

我正在尝试使用 Django 表单允许 Django 用户输入他们最喜欢的三个兴趣。错误发生在模板渲染期间，其中显示 {{form.as_ul}}.

代码如下：

reg_interests.html

{% block content %}

<br><br>
<h1>Choose the 3 things that interest you most!</h1>

<form method="post" action="/reg_interests/">
    {% csrf_token %}
    {{form.as_ul}}
    <br>
    <p class="submit"><input  class="btn btn-default" type="submit" name="commit" value="Continue"></p>
</form>

{% endblock %}

views.py

def reg_interests_view(request):
    if request.POST:
        form = InterestsForm(request.POST, request=request)
        if form.is_valid():
            form.save(request)
            return redirect('/reg_video/')

    args = {}
    args['form'] = InterestsForm(request=request)

    return render(request, 'login/reg_interests.html', args)

forms.py

class InterestsForm(RequestModelForm):
    interest1 = forms.ChoiceField(choices=[(1, "Option 1"), (2, "Option 2")])
    interest2 = forms.ChoiceField(choices=[(1, "Option 1"), (2, "Option 2")])
    interest3 = forms.ChoiceField(choices=[(1, "Option 1"), (2, "Option 2")])

    class Meta:
        model = Interest
        fields = ('interest1', 'interest2', 'interest3')

    def __init__(self, request):
        self.user = request.user

    def save(self, commit=True):
        interest = super(InterestsForm, self).save(commit=False)
        interest.user = self.user
        interest.interest1 = self.cleaned_data['interest1']
        interest.interest2 = self.cleaned_data['interest2']
        interest.interest3 = self.cleaned_data['interest3']

        if commit:
            interest.save()

        return interest

我认为表格有问题，但我不知道如何或为什么需要定义 _errors。 Django 本身不应该处理这个问题吗？如果不是，我如何定义 _errors?

Answer 1

此代码根本无法工作，因为您覆盖了表单的 __init__ 方法，因此 a) 您只接受 request 参数 - 而不是任何其他参数一个表单是期望的，比如 data 或 initial - 并且 b) 你永远不会调用超类 init 方法来初始化表单代码的其余部分所期望的东西。您需要保留签名并调用 super.

def __init__(self, *args, **kwargs):
     request = kwargs.pop('request')
     self.user = request.user
     super(InterestsForm, self).__init__(*args, **kwargs)

Django AttributeError: 'InterestsForm' object has no attribute '_errors'

Django AttributeError: 'InterestsForm' object has no attribute '_errors'

python

django

django-1.10