How to use pagination in laravel 5 with Raw query

Question

I have a simple question and I didn´t find what I need.

I need to calculate the distance between t2 geocode points for a list of Stores. I also need it to be paginat

Answer 1

Ok, I got a solution! I don´t like it because I must to load all the rows in RAM and then use the manual paginator.

public function stores($lat, $lon){
    $stores = DB::table('stores')
        ->selectRaw(' *, distance(lat, ?, lng, ?) as distance ')
        ->setBindings([$lat,$lon])
        ->orderBy('distance')
        ->get();
    $result_p = new Paginator($stores, $this->limit, Request::input('page'),['path' => Request::url() ]);
    return $result_p;
}

After this I was looking more inforamtion and the problem is setBindings([$lat,$lon])

The latest and Good solution:

public function stores($lat, $lon){
    return $stores = DB::table('stores')
        ->selectRaw(" *, distance(lat, {$lat}, lng, {$lon}) as distance ")
        ->orderBy('distance')
        ->paginate($this->limit);
}

Answer 2

Use the selectRaw method on the Eloquent model.

Store::selectRaw('*, distance(lat, ?, lng, ?) as distance', [$lat, $lon])
    ->orderBy('distance')
    ->paginate(10);

In that case Laravel asks the database for the amount of rows (using select count(*) as aggregate from stores) which saves your RAM.