gistfile1.txt

SG.groupsUsersController = GN.SearchableArrayController.create({
  contentBinding:SC.Binding.oneWay("SG.groupsUserFilter.users")
});

SG.groupsUserFilter = SC.Object.create({
  allUsersBinding:"SG.usersController.arrangedObjects",
  users:function() {
    var a = this.get('allUsers');
    console.log(a);
    if(!a) return null;
    console.log(a.toArray());

    return a.filter(function(user) {
      if(user.get('superAdmin')) return NO;
      if(user.get('clientAdmin')) return NO;
      if(user.get('contentAdmin')) return YES;
      return NO;
    });
  }.property('allUsers', '*allUsers.[]')
});