public function secondmethod()
    {

        $dbq = $this->db->select('test')->from('test')->get()->row()->test;
        echo 'testmod second - '.$dbq;
    }

public function index()
    {
      echo modules::run('tm/testmod/secondmethod');
         //$this->load->view('welcome_message');
    }

A PHP Error was encountered

Severity: Notice

Message: Undefined property: testmod::$db

Filename: controllers/testmod.php

Line Number: 16
Fatal error: Call to a member function select() on a non-object in /var/www/riskk.kz.moodle/application/modules/tm/controllers/testmod.php on line 16