public static function viewUnit($id)
 {
     $unit = RentalUnit::find($id);
     $amenities = Amenity::all_and_check(Amenity::RENTAL_UNIT, $id);
     $landlord = User::find($unit->landlord);
     $user = parent::get_user_logged_in();
     $leases = Lease::find_leases_for($id);
     $disabled = null;
     if ($user->id != $landlord->id) {
         $disabled = 'disabled';
     }
     View::make('rental_unit/unit.html', array('unit' => $unit, 'amenities' => $amenities, 'landlord' => $landlord, 'leases' => $leases, 'disabled' => $disabled));
 }