Login

  function proses_login()
  {
    $this->load->library('form_validation');
    $this->validation_form();

    if ($this->form_validation->run() == TRUE)
    {
      $username = $this->input->post('username') ? $this->input->post('username') : '';
      $password = $this->input->post('password') ? md5($this->input->post('password')) : '';
      $cek_login = $this->data_model->cek_login($username, $password);

      if ($cek_login)
      {
        $users = $this->data_model->get_user_data($username, $password);
        $user_data = array(
                      'id_user_protokol'=>$users['id_user'],
                      'username_protokol'=>$users['username'],
                      'id_group_protokol'=>$users['id_group'],
                      'nama_user_protokol'=>$users['nama'],
                      'is_login_protokol'=>TRUE
                    );

        $this->session->set_userdata($user_data);

        redirect('home');
      }
      else
      {
        $this->session->set_flashdata('error_login', 'Username atau password salah');
        redirect('auth/login/');
      }
    }
    else
    {
      $this->session->set_flashdata('error_login', validation_errors());
      redirect('auth/login/');
    }

  }