Question

我在使用django时遇到了麻烦。由于某些愚蠢的原因，Django想要说我不能将选择作为表单的一部分。它顽固地说，

'用户'对象没有属性'选择'

哪个是公牛，因为我没有提到用户对象。我不知道如何解决这个问题。我只需要从表单中选择选择的视图方法。有谁知道怎么做？

这是表格......

''' Form used in medical personnel registration. Extends UserCreationForm '''
class MedicalPersonnelRegisterForm(UserCreationForm):
#email = EmailField(required = True)
choices = [
    (Nurse, 'Nurse'),
    (Doctor, 'Doctor'),
    (HospitalAdmin, 'Admin'),
]
position = forms.ChoiceField(choices = choices)
class Meta:
    model = User
    fields = ("username", "password1", "password2")
def clean_password2(self):
    password1 = self.cleaned_data.get("password1")
    password2 = self.cleaned_data.get("password2")
    if password1 and password2 and password1 != password2:
        raise forms.ValidationError(
            self.error_messages['password_mismatch'],
            code='password_mismatch',
        )
    return password2
def save(self, commit=True):
    user=super(UserCreationForm, self).save(commit=False)
    user.set_password(self.clean_password2())
    if commit:
        user.save()
    return user

视图看起来像这样......

''' This displays the Medical personnel login form. Unique because of radio box for type of user '''
def personnel_registration(request):
if request.method == "POST":
    form = MedicalPersonnelRegisterForm(request.POST)
    if form.is_valid():
        new_user = form.save()
        if new_user.choices == Nurse: # TODO : THIS MIGHT BREAK BADLY
            new_nurse = Nurse(user = new_user)
            new_nurse.save()
            temp = Event(activity= '\n'+new_nurse.user.get_full_name()+" has registered as a Nurse")
            temp.save()
        elif new_user.choices == Doctor:
            new_doctor = Doctor(user = new_user)
            new_doctor.save()
            temp = Event(activity= '\n'+new_doctor.user.get_full_name()+" has registered as a Doctor")
            temp.save()
        else:
            new_admin = HospitalAdmin(user = new_user)
            new_admin.save()
            temp = Event(activity= '\n'+new_admin.user.get_full_name()+" has registered as a Admin")
            temp.save()
        return HttpResponseRedirect('/login/') # TODO : Refer them to there home page

else:
    form = MedicalPersonnelRegisterForm()
return render(request, "main_site/personnel_registration.html", {
    "form" : form,
})

Answer 1

你这里有很多混乱的地方，所以很难解开你真正想要的东西。

首先，您应该注意错误发生的位置：在视图中，而不是在表单中。在它发生时，您有一个User模型的实例。它在任何地方都没有choices属性。

其次，即使您正在查看表单，您仍然没有任何名为choices的内容。您使用选项为position字段设置允许值和用户可读内容，但choices本身不是字段。

由于position是表单上的额外字段，与User模型无关，因此您需要从表单数据本身获取它，该表单数据位于form.cleaned_data中。所以：

if form.cleaned_data['position'] == Nurse:
   ...

传递ChoiceField的选择不接受

1 个答案: