LinkStack/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Validator;
use Illuminate\Support\ServiceProvider;
use Illuminate\Pagination\Paginator;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\View;
use Livewire\Livewire;
use Illuminate\Support\Facades\Route;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        // Use Bootstrap for pagination
        Paginator::useBootstrap();

        // Custom validation rule: isunique
        Validator::extend('isunique', function ($attribute, $value, $parameters, $validator) {
            $value = strtolower($value);
            $query = DB::table($parameters[0])->whereRaw("LOWER({$attribute}) = ?", [$value]);

            if (isset($parameters[1])) {
                $query->where($parameters[1], '!=', $parameters[2]);
            }

            return $query->count() === 0;
        });

        // Custom validation rule: exturl
        Validator::extend('exturl', function ($attribute, $value, $parameters, $validator) {
            $allowed_schemes = ['http', 'https', 'mailto', 'tel'];
            return in_array(parse_url($value, PHP_URL_SCHEME), $allowed_schemes, true);
        });

        // Add namespace for blocks
        View::addNamespace('blocks', base_path('blocks'));

        // Customize Livewire script route
        Livewire::setScriptRoute(function ($handle) {
            return Route::get(asset('assets/vendor/livewire/livewire.js'), $handle);
        });
    }
}