问题解决了。它现在可以保存多项选择字段。
class GroupAdminForm(forms.ModelForm):
users = forms.ModelMultipleChoiceField(queryset=User.objects.all(),
widget=FilteredSelectMultiple('Users', False),
required=False)
locations = forms.ModelMultipleChoiceField(queryset=Location.objects.all(),
widget=FilteredSelectMultiple('Location', False),
required=False)
class Meta:
model = Group
def __init__(self, *args, **kwargs):
instance = kwargs.get('instance', None)
if instance is not None:
initial = kwargs.get('initial', {})
initial['users'] = instance.user_set.all()
initial['locations'] = instance.c_locations.all()
kwargs['initial'] = initial
super(GroupAdminForm, self).__init__(*args, **kwargs)
def save(self, commit=True):
group = super(GroupAdminForm, self).save(commit=commit)
if commit:
group.user_set = self.cleaned_data['users']
group.locations = self.cleaned_data['locations']
else:
old_save_m2m = self.save_m2m
def new_save_m2m():
old_save_m2m()
group.user_set = self.cleaned_data['users']
group.location_set = self.cleaned_data['locations']
self.save_m2m = new_save_m2m
return group