controller_1 file

class controller_1 extends user_controller
{
	public function view($id)
	{
		$job_id = $this->uri->segment(3);

		// http://localhost/sample/controller_1/view/
		$this->template->set_layout($this->layout)->build('view', $this->data);
	}
}

controller_2 file

class controller_2 extends user_controller
{

	public function sample()
	{
		// I need to get the job_id from controller_1

		// no view for this controller
	}

}