Symfony2 - Excluding current post on show page - symfony

Question

I have a show page and on the bottom the page I have a 'Related' articles section that show 4 related articles that the user can click on.
The problem is, I want to exclude the current article that is being shown from the 'Related' articles section on the bottom of the page so it doesn't appear twice.
Is there a conditional I can use in Twig to hide the current article I am showing in the 'Related' section so it doesn't appear twice (once for the show and again on the bottom of the page as a Related article) on the bottom of the page?
Example of show page
Show page - Article 1
blah...
...blah
blah...
Related: (4 articles on the bottom of page)
Article 1, Article 2, Article 3, Article 4 (I want to hide Article 1 in this section as it's being shown already)
Related partial I am using:
<h2>Related</h2>
<aside id="" class="">
<div class='featuredfour cf'>
{% for article in articles %}
{% if not article.id == showedArticleId %}
<div class="featuredfourpost">
<a href="{{ path('acme_demo_article_show', { slug: article.slug }) }}">
<img width="150" height="150" src="{{ asset(['images/', article.image]|join) }}" class="" alt="" />
<h3 class="title">{{ article.title }}</h3>
</a>
</div>
{% endif %}
{% endfor %}
</div>
</aside>
Show page
{% extends "AcmeDemoBundle::layout.html.twig" %}
{% set showedArticleId = article.id %}
{% block body %}
[...]
<div class="entry-content">
{% autoescape false %}
<p>{{ include(template_from_string(article.body|raw|nl2br)) }}</p>
{% endautoescape %}
</div>
[...]
{# Related Articles section #}
{{ include('AcmeDemoBundle:Partial:_featured.html.twig', { articles: articles }) }}
{% endblock %}
Doctrine for relatedPosts
public function getRelatedArticles($limit)
{
return $this
->createQueryBuilder('article')
->setMaxResults($limit)
->orderBy('article.createdAt', 'DESC')
->getQuery()
->execute();
}

Answer 1

You can try this for your Doctrine query:
public function getRelatedArticles($exceptArticle, $limit)
{
return $this
->createQueryBuilder('article')
->where('article != :exceptArticle')
->setMaxResults($limit)
->orderBy('article.createdAt', 'DESC')
->setParameter('exceptArticle', $exceptArticle);
->getQuery()
->execute();
}
You just give the article to except from the query.

Answer 2

Inside your twig, on the part where you're showing the article, add (somewhere, without code is difficult to say exactly where)
[...]
{% set showedArticleId = article.id %}
[...]
Then use it for check and skip already showned one
[...]
{% for article in articles %}
{% if article.id != showedArticleId %}
[...]
{% endif %}
{% endfor %}
[...]
Of course I'm making some guessing on your article entity fileds: I'm pretty sure that id will be there