Example of the Property Auth engine working in a laravel app

property-auth-example.php

<?php

// First, our service provider defining the policies
<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Psecio\PropAuth\Enforcer;
use Psecio\PropAuth\Policy;
use Psecio\PropAuth\PolicySet;

class PolicyServiceProvider extends ServiceProvider
{
    public function register()
    {
    	$this->app->singleton('policies', function($app) {
    		$set = PolicySet::instance()
    			->add('can-edit', Policy::instance()->hasUsername('ccornutt'))
    			->add('can-delete', Policy::instance()->can(function($post) {
						return $post->author == 'ccornutt';
    				})
    		);

    		return Enforcer::instance($set);
    	});
    }
}

// And now it in use in a simple controller
<?php

namespace App\Http\Controllers;

use App\User;
use Illuminate\Support\Facades\Auth as Auth;

class TestController extends Controller
{
	public function showTest()
	{
		$result = \App::make('policies')->allows('can-edit', Auth::user());
		var_export($result); // true for a normal check

		$post = (object)[ 'author' => 'ccornutt'];
		$result = \App::make('policies')->allows('can-delete', Auth::user(), [$post]);
		var_export($result); // true for a closure-based check

		return view('test/test');
	}
}

?>

This uses the PropAuth package: https://github.com/psecio/propauth