public function getWallData($user_id)
{
$query = "select * from (select * from user_info t1 where user_id in ( select friend_id as user_id from friend_info where user_id=" . $user_id . " and friend_status='confirmed'))t2 natural join post_info order by post_time desc";
$records = $this->db->query($query);
return Wall_data::instantiate($records);
}
public function getWallData()
{
$user_id = $this->session->userdata('user_id');
return Wall_data::getWallData($this->session->userdata('user_id'));
}