code: def activated_services(self, user, provider=None):
          
          services = UserService.objects.filter(name__status=1, user=user)
  
          choices = []
          data = ()
  
          if provider is not None:
              services = services.exclude(name__exact=provider)
  
          for class_name in services:
              data = (class_name.name, class_name.name.name.rsplit('Service', 1)[1])
              choices.append(data)
  
          return choices
docs: get the activated services added from the administrator
              :param user: user
              :param provider: the selected provider
              :type user: current user
              :type provider: string
              :return: list of activated services
              :rtype: list