Question

How to prevent refresh form page in CodeIgniter?

If I use redirect — all fine, but I can directly appeal to page site.com/update/success.
How can I prevent direct access to success page (only from site.com/update/) ?

Controller update.php

public function index() {
   if($this->form_validation->run() == FALSE) {
      $data['error'] = 'Something wrong';
      $this->load->view('update', $data);
   } else {
      redirect('/update/success');
   }
}

public function success() {
   $message = 'Your profile has been successfully updated';
   $this->load->view($message);
}

Answer 1

You could set a token in flashdata in your index() function and then check for that token in your success() method.

class Update extends CI_Controller {

    property $token;

    public function __construct()
    {
        $this->load->library('session');
    }

    public function index() {
       if($this->form_validation->run() == FALSE) {
          $data['error'] = 'Something wrong';
          $this->load->view('update', $data);
       } else {
          $this->session->set_flashdata('update_token', time());
          redirect('/update/success');
       }
    }

    public function success() {

        // Make sure this request came from the index() method...
        if( ! $this->session->flashdata('update_token'))
        {
            redirect();
        }

       $message = 'Your profile has been successfully updated';
       $this->load->view($message);
    }
}