pixelfed/app/Listeners/AuthLogin.php

<?php

namespace App\Listeners;

use DB;
use App\User;
use App\UserSetting;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Contracts\Queue\ShouldQueue;

class AuthLogin
{
    /**
     * Create the event listener.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     *
     * @param  object  $event
     * @return void
     */
    public function handle($event)
    {
        $user = $event->user;
        if (empty($user->settings)) {
            DB::transaction(function() use($user) {
                UserSetting::firstOrCreate([
                    'user_id' => $user->id
                ]);
            });
        }
    }
}