Accessible Symfony Breadcrumbs

symfony_accessible_breadcrumbs

// app/resources/views/breadcrumbs.html.twig
// this file will be included with the 'breadcrumbs' variable
<nav aria-label="You are here:" role="navigation">
    <ul class="breadcrumbs">
        <li>
            <a href="/">
                <i class="fa fa-home"></i>
            </a>
        </li>
        {% for crumb in breadcrumbs %}
            <li class="{{ crumb.class }}">
                {% if 'disabled' not in crumb.class and not loop.last%}
                <a href="{{ crumb.path }}">
                {% endif %}
                {% if loop.last %}
                    <span class="show-for-sr">Current: </span>
                {% endif %}
                {{ crumb.label }}
                {% if 'disabled' not in crumb.class and not loop.last %}
                </a>
                {% endif %}
            </li>
        {% endfor %}
    </ul>
</nav>

// CONTROLLER EXAMPLES

/* simple controller action with two-deep breadcrumb */
public function productAction()
    {
        // get a product object
        $em = $this->getDoctrine()->getManager();
        $products = $em->getRepository('CommonContentBundle:Product')->findAll();   
        
        // build the breadcrumbs array
        $breadcrumbs = array(
          array(
            'label' => $product->getCategory()->getTitle(),
            'path' => $this->generateUrl('product_category',array('slug'=>$product->getCategory()->getSlug())),
            'class' => null
          ),
          array(
            'label' => $product->getTitle(),
            'path' => $this->generateUrl('product_detail',array('slug'=>$product-getSlug())),
            'class' => null
          )
        );
        
        // an additional piece here can be used to create a conditional parent crumb for self referencing associations (parent/child)
       
        if ($product->getParent()) {
            $parentArray = array(
                'label' => $product->getParent()->getTitle(),
                'path' => $this->generateUrl('product_detail', array('slug'=>$product->getParent()->getSlug())),
                'class' => 'parent'
            )
            array_splice($breadcrumbs, 1, 0, $parentArray);
        }
        return $this->render('::product.html.twig', array(
          'breadcrumbs' => $breadcrumbs,
          'product' => $product
        ));
    }

// product.html.twig
{% if breadcrumbs is defined %}
    {% block breadcrumbs %}
        {% include "::breadcrumbs.html.twig" with breadcrumbs %}
    {% endblock %}
{% endif %}