Regenerate CRSF token codeigniter on submit Ajax

Question

Hi I am looking for the process of regeneration of csrf token in codeigniter when ever a form is submitted using ajax. I want the token to be regenerated without page refres

Answer 1

I find using the form helper function works better with Codeigniter CSRF and stops throwing the CSRF error If you use normal html input will keep throwing CSRF error.

• http://www.codeigniter.com/user_guide/helpers/form_helper.html#form_input
• http://www.codeigniter.com/user_guide/helpers/form_helper.html#form_password

Here is a example AJAX

 'form-login'));?>
 'username',
'id' => 'username',
'class' => ''
);

echo form_input($username_array);

?>

 'password',
'id' => 'password',
'class' => ''
);

echo form_password($password_array);

?>

 'submit',
'id' => 'submit',
'class' => '',
'value' => 'Submit',
'type' => 'submit'
);

echo form_input($submit_array);

?>

Example

public function index() {
   $data['token_name'] = $this->security->get_csrf_token_name();
   $data['token_hash'] = $this->security->get_csrf_hash();

   $this->load->view('login_view', $data);
}

public function example() {
    $data = array('success' => false, 'messages' => array());

    $this->form_validation->set_rules('username', 'username', 'required');
    $this->form_validation->set_rules('password', 'password', 'required');

    if ($this->form_validation->run() == false) {

        foreach ($_POST as $key => $value) {
            $data['messages'][$key] = form_error($key);
        }

    } else {


        $data['success'] = true;
    }

    echo json_encode($data);
}