Question

我正在尝试使用Django显示一个表单，但是如果用户语言是＆＃39; en＆＃39;我想删除一个字段。我想避免在Javascript中执行此操作或仅为此执行第二个模板。所以我想知道是否可以将参数传递给我Meta()类的UserForm()类。这样我就可以通过用户并用if语句检查他的语言。

这是我到目前为止所做的：

class UserForm(forms.ModelForm):
    first_name = forms.CharField(required=True, label=_('*First name'))
    last_name = forms.CharField(required=True, label=_('*Last name'))
    postal_code = FRZipCodeField(required=False, label=_('My postcode'))
    birthday = forms.DateField(
        widget=forms.DateInput(format='%d/%m/%Y'),
        required=False,
        input_formats=['%d/%m/%Y'],
        label=_('My birthday'))

    def __init__(self, *args, **kwargs):
        super(UserForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.layout = Layout(
            Field('gender'),
            Field('first_name'),
            Field('last_name'),
            Field('birthday'),
            Field('country'),
            Field('language'),
            Field('payment_preference'),
            Div('addr1', css_class='hidden', css_id='addr1_container'),
            Div('addr2', css_class='hidden', css_id='addr2_container'),
            Div('addr3', css_class='hidden', css_id='addr3_container'),
            Div('postal_code', css_class='hidden', css_id='pc_container'),
            Div('city', css_class='hidden', css_id='city_container'),                                                                                    
            ButtonHolder(
                Submit('save', _('update'), css_class='pull-right'),
            )
        )

    class Meta():
        model = User

        fields = (
            "first_name", "last_name", "gender", "birthday", "country",
            "payment_preference", "addr1", "addr2", "addr3", "postal_code",
            "city", "language",)

使用if，我可以在Meta（）类中设置两个不同的字段变量，因此为每种用户语言显示两种不同的形式。

Answer 1

您无法将其传递给Meta，但您可以将其传递到__init__并隐藏您要隐藏的字段：

class UserForm(forms.ModelForm):
    # ... as before
    def __init__(self, user, *args, **kwargs):
        super(UserForm, self).__init__(*args, **kwargs)
        if user.language == 'en':
            self.fields['field_name'].widget = forms.HiddenInput()
    # ... as before

然后，当您调用表单时，将用户作为第一个参数传递：

form = UserForm(request.user, ...)

将参数传递给Django类meta

1 个答案: