I came across this because I wanted to add a user's group_id(s) to the session upon successful login. In case anyone is interested, here's how I did it (once i managed to figure out where everything was being done).
In ion_auth_model.php, I took the set_session function:
public function set_session($user)
{
$this->trigger_events('pre_set_session');
$session_data = array(
'identity' => $user->{$this->identity_column},
'username' => $user->username,
'email' => $user->email,
'user_id' => $user->id, //everyone likes to overwrite id so we'll use user_id
'old_last_login' => $user->last_login
);
$this->session->set_userdata($session_data);
$this->trigger_events('post_set_session');
return TRUE;
}
and modified it to this:
public function set_session($user)
{
$this->trigger_events('pre_set_session');
$session_data = array(
'identity' => $user->{$this->identity_column},
'username' => $user->username,
'email' => $user->email,
'user_id' => $user->id, //everyone likes to overwrite id so we'll use user_id
'old_last_login' => $user->last_login
);
//get user group ids for user and pass to session
$groups = $this->ion_auth->get_users_groups($user->id)->result();
foreach ($groups as $row){
$session_data['groups'][] = $row->id;
}
$this->session->set_userdata($session_data);
$this->trigger_events('post_set_session');
return TRUE;
}
now it writes an array to the session called groups that is a list of all the groups the user belongs to.
The only other thing I had to do was to modify the logout function in Ion_auth.php (in application/libraries) to make sure the group session variable is unset by adding
$this->session->unset_userdata('groups');
to the list of other unset_userdata() statements.
I know I probably should have just extended the libraries/models to keep the core untouched, but you could take what I did and easily do that.
hope this helps someone.
Rob