always use FilteredSelectMultiple for many-to-many fields

passbook/oauth_client/forms.py

@@ -1,6 +1,7 @@
 """passbook oauth_client forms"""
 
 from django import forms
+from django.contrib.admin.widgets import FilteredSelectMultiple
 from django.utils.translation import gettext as _
 
 from passbook.admin.forms.source import SOURCE_FORM_FIELDS
@@ -29,6 +30,7 @@ class OAuthSourceForm(forms.ModelForm):
             'consumer_key': forms.TextInput(),
             'consumer_secret': forms.TextInput(),
             'provider_type': forms.Select(choices=MANAGER.get_name_tuple()),
+            'policies': FilteredSelectMultiple(_('policies'), False)
         }
         labels = {
             'request_token_url': _('Request Token URL'),