public List<Group> getGroups() {
List<Group> allGroups = Group.findAll();
List<Group> answer = new ArrayList<Group>();
for (Group g : allGroups) {
for (User u : g.members) {
if (u.equals(this)) {
answer.add(g);
break;
}
}
}
return answer;
}
public boolean visible(User user) {
if (visibility == Visibility.PRIVATE) return user.equals(owner);
if (visibility == Visibility.FRIENDS) return user.equals(owner) || user.isFriendsWith(owner);
return true;
}