Join Array to the same coloumn

[arinalrifqi]

how can I call the values from the table that joined, it joined to the same id of the table,
-------------Model-----------------
public function joinArray() {
return array(
'user|left' => 'user.user_id = notif.notif_sender_user_id',
'user|left' => 'user.user_id = notif.notif_receiver_user_id'
);
}

--------- JS View -------------
{ "data": " // the first value"},
{ "data": " // the second value"},