How to get relationship fuelcms

gistfile1.txt

function doctor_profile($slug = NULL)
	{
		$data['doctor'] = fuel_model(
			'doctors', 
			array(
            	'find' => 'one', 
            	'where' => array('slug' => $slug), 
            	'return_method' => 'object'
            )
        );

		$specialties = array();

		$hospitals = array();
		
		$focus = array();

		foreach ($data['doctor']->specialties as $s) {
			$specialties[] = $s->title;
		}

		foreach ($data['doctor']->hospitals as $h) {
			$hospitals[] = $h->name;
		}
		
		foreach ($data['doctor']->focuses as $f) {
			$focus[] = $f->title;
		}

		$this->load->model('doctors_model');

		$data['schedules'] = $this->doctors_model->get_schedules($slug);
		$data['specialties'] = $specialties ? implode(', ', $specialties) : 'No data available.';
		$data['clinics'] = $hospitals ? implode(', ', $hospitals) : 'No data available.';
		$data['clinical_focus'] = $focus ? implode(', ', $focus) : 'No data available.';
		// var_dump($data['schedules']);die;
		$this->fuel->pages->render('doctor-profile', $data);
	}