elbosp

use Illuminate\Database\Eloquent\Builder; // JANGAN LUPA INCLUDE ELOQUENT BUILDER

return view('some_view', [

// LEMPAR QUERY SEARCH SEBELUMNYA
    'search' => request()->search,

// MENGGUNAKAN FUNCTION WHEN, CHECK: https://laravel.com/docs/8.x/collections#method-when
// MENGGUNAKAN FUNCTION WHEREHAS, CHECK: https://laravel.com/docs/8.x/eloquent-relationships#querying-relationship-existence
    'models' => Model::when(request()->search, function($qwr) {