Question

在创建用户时，我让表单附加了权限组。通常，用户和组绑定在ManyToMany关系中。因此，它正在生成MultipleChoiceField。但是，我希望只能为groups字段选择一个选项，而不是MultipleChoiceField。我已经为create User表单弄清楚了。但是对于更新用户表单，我如何调用组字段的初始值（或如何自动选择保存的值）。另外，还有没有比下面的代码更好的有效方法了？

创建用户表单：

class UserForm(forms.ModelForm):
    email = forms.EmailField(required=True)
    groups = forms.ChoiceField(required=False)

    class Meta:
        model = User
        fields = ('username', 'email', 'groups')

    def __init__(self, *args, **kwargs):
        super(UserForm, self).__init__(*args, **kwargs)
        choices = [[obj.pk, obj.name] for obj in Group.objects.all()]
        choices.insert(0, ['', '--------'])
        self.fields["groups"].choices = choices

更新用户表单：

class UserUpdateForm(forms.ModelForm):
    email = forms.EmailField(required=True)
    groups = forms.ChoiceField(required=False)

    class Meta:
        model = User
        fields = ('email', 'first_name', 'last_name', 'is_active', 'groups')

    def __init__(self, *args, **kwargs):
        super(UserUpdateForm, self).__init__(*args, **kwargs)
        choices = [[obj.pk, obj.name] for obj in Group.objects.all()]
        choices.insert(0, ['', '--------'])
        self.fields["groups"].choices = choices
        # My goal here is to call the initial value for the groups field which 
        # is ManyToManyField

生成用户组的choiceField用于创建和更新用户

0 个答案: