public function datatables()
 {
     $data = Carga::Datatables()->get();
     return Datatables::of($data)->addColumn('action', function ($data) {
         return '<a href="carga/' . $data->id . '/edit" class="btn btn-xs btn-primary">Edit</a>' . ' / <form method="POST" action="http://localhost/inventario/carga/' . $data->id . '" accept-charset="UTF-8" style="display:inline"><input name="_method" type="hidden" value="DELETE"><input name="_token" type="hidden"  value="' . csrf_token() . '"><button type="submit" class="btn btn-danger btn-xs">Borrar</button></form>';
     })->editColumn('fecha', function ($data) {
         return '<a href="carga/' . $data->id . '" >' . Carbon::createFromFormat('Y-m-d', $data->fecha)->format('d/m/Y') . '</a>';
     })->editColumn('importe', function ($data) {
         return "\$ " . $data->importe;
     })->make(true);
 }