Pluck

                            
<?php
 
namespace App\Http\Controllers;
 
use App\Models\Example;
 
class ExampleController extends Controller
{
    public function show($id)
    {
        $item = Example::findOrFail($id);
 
        $selectOptions = $item->categories->pluck('name', 'id')->unique()->all();
 
        return view("example.show", ["item" => $item, "selectOptions" => $selectOptions]);
    }
}