[models] added hook for group membership changes of users

vispa/models/group.py

@@ -6,7 +6,7 @@ from sqlalchemy import Column, Table, ForeignKey
 from sqlalchemy.orm import relationship
 from sqlalchemy.orm.session import object_session
 from sqlalchemy.types import Unicode, DateTime, Integer, UnicodeText
-from vispa import AjaxException
+from vispa import AjaxException, fire_callback
 from vispa.models import Base
 from vispa.models.project import Project
 from vispa.models.user import User
@@ -331,6 +331,7 @@ class Group(Base):
             session.commit()
         except:
             session.rollback()
+        fire_callback("user.group.membership", user, self, confirmed == Group_User_Assoc.CONFIRMED)
 
     def confirm_user(self, user):
         """
@@ -349,6 +350,7 @@ class Group(Base):
         if assoc is None:
             raise AjaxException('user %s not in group %s' % (user.name, self.name), 409)
         assoc.status = Group_User_Assoc.CONFIRMED
+        fire_callback("user.group.membership", user, self, True)
 
     def remove_user(self, user):
         """
@@ -367,6 +369,7 @@ class Group(Base):
         if assoc is None:
             raise AjaxException('user %s not in group %s' % (user.name, self.name), 409)
         session.delete(assoc)
+        fire_callback("user.group.membership", user, self, False)
 
     def is_member(self, user):
         """