django - 在表单验证之前在 View 中设置字段值 'user'

Question

我正在尝试在验证之前在 View 中设置字段值“用户”，如您在下面的示例中所见。但我仍然收到验证消息 user is required，表明它没有被设置。我做错了什么？

谢谢，

view.py

def add_batch(request):
    # If we had a POST then get the request post values.
    if request.method == 'POST':

        form = BatchForm(data=request.POST, initial={'user': request.user})
        # Check we have valid data before saving trying to save.
        if form.is_valid():
            # Clean all data and add to var data.
            data = form.cleaned_data
            groups = data['groups'].split(",")
            for item in groups:
                batch = Batch(content=data['content'],
                              group=Group.objects.get(pk=item),
                              user=request.user
                              )
                batch.save()
            return redirect(batch.get_send_conformation_page())
        else:
            context = {'form': form}
            return render_to_response('sms/sms_standard.html', context, context_instance=RequestContext(request))

表单.py

class BatchForm(forms.ModelForm):

    class Meta:
        model = Batch

    def __init__(self, user=None, *args, **kwargs):
        super(BatchForm, self).__init__(*args,**kwargs)
        if user is not None:
            form_choices = Group.objects.for_user(user)
        else:
            form_choices = Group.objects.all()
        self.fields['groups'] = forms.ModelMultipleChoiceField(
            queryset=form_choices
        )

Answer 1

作为the documentation解释说，initial 值不用于在表单中设置数据，它们仅用于显示初始值。

如果您不想显示用户但想自动设置它，最好的办法是将用户字段完全从 ModelForm 中排除，并在保存时在 View 中设置它。或者，由于您出于其他原因将其作为参数传递，您可以将其添加到 POST 数据中:

def __init__(self, user=None, *args, **kwargs):
    super(BatchForm, self).__init__(*args,**kwargs)
    if user is not None:
        if self.data:
            self.data['user'] = user