PHP code example of gpslab / cqrs

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

gpslab / cqrs example snippets

use GpsLab\Component\Command\Command;

class RenameArticleCommand implements Command
{
    public $article_id;

    public $new_name = '';
}

use GpsLab\Component\Command\Command;
use Doctrine\ORM\EntityManagerInterface;

class RenameArticleHandler
{
    private $em;

    public function __construct(EntityManagerInterface $em)
    {
        $this->em = $em;
    }

    public function handleRenameArticle(RenameArticleCommand $command): void
    {
        // get article by id
        $article = $this->em->getRepository(Article::class)->find($command->article_id);
        $article->rename($command->new_name);
    }
}

use GpsLab\Component\Command\Bus\HandlerLocatedCommandBus;
use GpsLab\Component\Command\Handler\Locator\DirectBindingCommandHandlerLocator;

// register command handler in handler locator
$handler = new RenameArticleHandler($em);
$locator = new DirectBindingCommandHandlerLocator();
$locator->registerHandler(RenameArticleCommand::class, [$handler, 'handleRenameArticle']);

// create bus with command handler locator
$bus = new HandlerLocatedCommandBus($locator);

// ...

// create rename article command
$command = new RenameArticleCommand();
$command->article_id = $article_id;
$command->new_name = $new_name;

// handle command
$bus->handle($command);

use GpsLab\Component\Query\Query;

class ArticleByIdentityQuery implements Query
{
    public $article_id;
}

use GpsLab\Component\Query\Query;
use Doctrine\ORM\EntityManagerInterface;

class ArticleByIdentityHandler
{
    private $em;

    public function __construct(EntityManagerInterface $em)
    {
        $this->em = $em;
    }

    public function handleArticleByIdentity(ArticleByIdentityQuery $query)
    {
        // get article by id
        return $this->em->getRepository(Article::class)->find($query->article_id);
    }
}

use GpsLab\Component\Query\Bus\HandlerLocatedQueryBus;
use GpsLab\Component\Query\Handler\Locator\DirectBindingQueryHandlerLocator;

// register query handler in handler locator
$handler = new ArticleByIdentityHandler($em);
$locator = new DirectBindingQueryHandlerLocator();
$locator->registerHandler(ArticleByIdentityQuery::class, [$handler, 'handleArticleByIdentity']);

// create bus with query handler locator
$bus = new HandlerLocatedQueryBus($locator);

// ...

// create find article query
$query = new ArticleByIdentityQuery();
$query->article_id = $article_id;

// handle query
$article = $bus->handle($query);