Calling stored procedure in codeigniter

Question

I am using latest codeigniter and trying to call stored procedure from my model. Also I am using mysqli as database driver. Now I am having an error when I call two stored procedures. Following is the error:

Error Number: 2014

Commands out of sync; you can't run this command now

call uspTest();

Filename: E:\wamp\www\reonomy-dev\system\database\DB_driver.php

Line Number: 330

Note that when I call a single stored procedure it works fine. Here is the code for model.

class Menus_model extends CI_Model {

function __construct()
{
    parent::__construct();

}

public function getMenus()
{
    $query = $this->db->query("call uspGetMenus()");

    return $query->result();
}

public function getSubMenus()
{
    $query = $this->db->query("call uspTest()");
    return $query->result();
}

}

Here is the code from controller

class MYHQ extends CI_Controller {

public function __construct()
{
    parent::__construct();
    $this->load->model('menus_model');
}

public function index()
{
    $menu = $this->menus_model->getMenus();
    $submenu = $this->menus_model->getSubMenus();
}

}

Is there any solution without hacking the core of codeigniter??

Answer 1

I follow the blog of Mr. Tim Brownlaw:
http://ellislab.com/forums/viewthread/73714/#562711

First, modify application/config/config.php, line 55.

$db['default']['dbdriver'] = 'mysqli'; // USE mysqli

Then, add the following into mysqli_result.php that is missing this command for some strange reason (under /system/database/drivers/mysqli/mysqli_result.php).

/**
  * Read the next result
  *
  * @return  null
  */   
 function next_result()
 {
     if (is_object($this->conn_id))
     {
         return mysqli_next_result($this->conn_id);
     }
 }

Then, in your model, add $result->next_result().

Below is my example.

function list_sample($str_where, $str_order, $str_limit)
{
   $qry_res    = $this->db->query("CALL rt_sample_list('{$str_where}', '{$str_order}', '{$str_limit}');");

   $res        = $qry_res->result();

   $qry_res->next_result(); // Dump the extra resultset.
   $qry_res->free_result(); // Does what it says.

   return $res;
}