/**
* Get districts that belong to the city/province by city_id
*
* @param int $id City id
*
* @return \Illuminate\Support\Collection $collection
*/
protected function _getWardsByCityId($id)
{
$dbRaw = DB::raw("id, CONCAT(type, ' ', name) as name");
$wards = Ward::where('district_id', $id)->select($dbRaw)->orderBy('name')->get();
return $wards;
}
