//showAllArticles
{% for article in articles %}
    {{ include("CoderslabBundle:Article:showArticle.html.twig", {'article': article}) }}<br><br>
{% endfor %}

//showArticle
{{ article.id }}
{{ article.title }}
{{ article.articleText }}

//kontroller
<?php

namespace CoderslabBundle\Controller;

use CoderslabBundle\Entity\Article;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;

class DefaultController extends Controller
{
    /**
     * @Route("/showAllArticles/")
     */
    public function showAllArticlesAction()
    {
        $articles = Article::GetAllArticles();

        return $this->render('CoderslabBundle:Article:showArticles.html.twig',
            [
                'articles' => $articles
            ]
        );
    }
}