use preferences_groups order when available

basetheme_bootstrap/user_preferences.py

@@ -99,13 +99,19 @@ class UserPreferencesAbstractModel(models.Model):
 
     @classmethod
     def get_allowed_fields(cls):
+        if cls.preferences_groups is not None:
+            for group, fields in cls.preferences_groups.items():
+                for f in fields:
+                    yield f
+            return
         for field_name in [f.name for f in cls._meta.get_fields()]:
             if field_name == "id" or field_name == "pk" or field_name == "user":
                 continue
             yield field_name
 
+    @classmethod
     @property
-    def preferences_groups(self):
+    def preferences_groups(cls):
         return None
 
     @property

setup.py

@@ -7,7 +7,7 @@ readme = open('README.rst').read()
 
 setup(
     name='django-basetheme-bootstrap',
-    version='0.2.28',
+    version='0.2.29',
     description='Django Basetheme Bootstrap',
     long_description=readme,
     author='Bryan Brancotte',