Creating basic Register (username/login/password)

[eluser]terry101[/eluser]
yea it was i made a error...good eye. i got a error on line 14? almost there :-)

! ) Fatal error: Call to undefined function query() in C:\wamp\www\code\application\models\usermodel.php on line 14

Line 14

Code:

$this->db-query($query_str, array($username,$name,$email,$sha1_password));

Code:

<?php

class Usermodel extends CI_Model {
    
        function __Usermodel() {
             parent::__Model();
        }
        
        function register_user($username, $name, $email, $password) {
            $sha1_password = sha1($password);
            
            $query_str = "INSERT INTO tbregister (username, password, name, email) Value ('{$username}', '{$name}', '{$email}', '{password}')";
            
            $this->db-query($query_str, array($username,$name,$email,$sha1_password));
        }
    }