php - datatables serverside join in codeigniter -


i tried combine data using datatable serverside in codeigniter via ajax, error result, this

message: call member function result() on boolean

filename: models/model_masterdata_menu.php

line number: 66

private function _get_datatables_query()             { //term value of $_request['search']['value']                 $column_search = array('m.menu_id, m.menu_nama, m.menu_url, sm.statusmenu_nama');                 $column_order = array('m.menu_id, m.menu_nama, m.menu_url, sm.statusmenu_nama',null);                 $order = array('m.menu_id' => 'desc');                 $this->db->select('m.menu_id, m.menu_nama, m.mmenu_url, sm.statusmenu_nama');                 $this->db->from('menu m');                 $this->db->join('status_menu sm', 'sm.statusmenu_id = m.statusmenu_id','left');                 $i = 0;                  foreach ($column_search $item) // loop column                 {                     if($_post['search']['value']) // if datatable send post search                     {                          if($i===0) // first loop                         {                                 $this->db->group_start(); // open bracket. query or clause better bracket. because maybe can combine other and.                                 $this->db->like($item, $_post['search']['value']);                         }                         else                         {                                 $this->db->or_like($item, $_post['search']['value']);                         }                          if(count($column_search) - 1 == $i) //last loop                             $this->db->group_end(); //close bracke                  }                   $i++;              }                 if(isset($_post['order'])) // here order processing                 {                      $this->db->order_by($order[$_post['order']['0']['column']], $_post['order']['0']['dir']);                 }                 else if(isset($this->order))                 {                      /*$order = $this->order;*/                      $this->db->order_by(key($order), $order[key($order)]);                 }              }               function get_datatables()             {                $this->_get_datatables_query();                 /*$this->_get_datatables_query();*/               if($_post['length'] != -1)               $this->db->limit($_post['length'], $_post['start']);                  $result = $query->result(); # added              }

what's wrong? can me?

i don't know why tells call member function result() on boolean because based on code didnt't declare $query properly.

anyway did try ?

function get_datatables() {      $this->_get_datatables_query();     if($_post['length'] != -1)  $this->db->limit($_post['length'], $_post['start']);     $query = $this->db->get();      return ($query->num_rows() > 0) ?   $query->result()    :   false; }

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