How can I prevent in the query string, that same key being duplicated?

[ivanradojevic-web-dev]

Currently:

 ?filter%5Bname%5D=adidas&filter%5Bname%5D=puma

Wanted:

first click ?filter%5Bname%5D=adidas
second click ?filter%5Bname%5D=puma

$products = QueryBuilder::for(Product::class)
    		->allowedFilters('name', AllowedFilter::exact('size') )
    		->get();

        return view('products', compact('products'));
,,,,,,,,,,,,,,,,,,,,,,,,,
@foreach(\App\Product::get()->pluck("name") as $value => $name)
<a href="{{ route('products.index', array_merge(request()->query(),  [ 'filter[name]' => $name  ] ) )  }}" >{{$name}}</a>
@endforeach

<br>

@foreach(\App\Product::get()->pluck("size") as $value => $size)
<a href="{{ route('products.index', array_merge(request()->query(),  [ 'filter[size]' => $size  ] ) )  }}" >{{$size}}</a>
@endforeach