如何在編輯用戶表單中檢查權限？

Question

我有形式（感謝阿拉斯代爾）：

class PermissionsModelMultipleChoiceField(forms.ModelChoiceField): 
    def label_from_instance(self, obj): 
     return "%s" % obj.name 


class UserForm(forms.ModelForm): 
    first_name = forms.CharField(label=u'First name', required=True) 
    last_name = forms.CharField(label=u'Last name', required=True) 
    permissions = PermissionsModelMultipleChoiceField(Permission.objects.none(), widget=forms.CheckboxSelectMultiple) 

    def __init__(self, *args, **kwargs): 
     super(NewUserForm, self).__init__(*args, **kwargs) 
     ctypes = ContentType.objects.filter(
      Q(app_label='articles') | 
      Q(app_label='tags') 
     ) 
     self.fields['permissions'].queryset = Permission.objects.filter(content_type__in=ctypes) 

    class Meta: 
     model = User 

而且在模板權限顯示我的權限是這樣的：

[] Can change article 
[] Can delete article 
[] Can view article 

[...] 

調用形式：

profile_user = User.objects.get(pk=user_id) 

if request.method == 'POST': 
    form = UserForm(request.POST, instance=profile_user) 
    if form.is_valid(): 
     form.save() 
     [... here will save permissions ...] 
     return HttpResponseRedirect(reverse('home')) 
else: 
    form = UserForm(instance=profile_user) 

如何設定檢查模板這是分配給編輯的用戶的權限？

Answer 1

使用參數data填充複選框，當你實例的形式（只外POST要求）是這樣的：

profile_user = User.objects.get(pk=user_id) 

if request.method == 'POST': 
    form = UserForm(request.POST, instance=profile_user) 
    if form.is_valid(): 
     form.save() 
     [... here will save permissions ...] 
     return HttpResponseRedirect(reverse('home')) 
else: 
    user_permissions_list = # place here the query to get the profile_user permissions 
    form = UserForm(instance=profile_user, data={'permissions':user_permissions_list}) 

使用data是根據用戶的實際權限，以紀念複選框的關鍵。

希望它有幫助！