How to use 'having' with paginate on relationship's column in laravel 5

Question

I need to grab the vehicles whose relation \'dealer\' is having distance < 200

Vehicle::join(\'dealers\', \'vehicles.dealer_id\', \'=\', \'dealers.id\')
          


        

Answer 1

Answer Updated corresponding to updated question

The problem is with the query builder as all selects are discarded when doing an aggregate call (like count(*)). The make-do solution, for now, is to construct the paginator manually as:

$query = Vehicle::join('dealers', 'vehicles.dealer_id', '=', 'dealers.id')
             ->select(DB::raw("dealers.id, ( cos( radians(latitude) ) * cos( radians( longitude ) ) ) AS distance"))
             ->having('distance', '<', '200');

$perPage = 10;
$curPage = \Illuminate\Pagination\Paginator::resolveCurrentPage();

$itemQuery = clone $query;

$items = $itemQuery->forPage($curPage, $perPage)->get();

$totalResult = $query->addSelect(DB::raw('count(*) as count'))->get();
$totalItems = $totalResult->first()->count;

$vehicles = new \Illuminate\Pagination\LengthAwarePaginator($items->all(), $totalItems, $perPage);