Symfony key array in twig - php

Question

I want to show information from one entity.
The entity that has the information is related to another , so I use a query to obtain that information.
class Playlist
{
private $id;
private $name;
private $items;
public function __construct()
{
$this->items = new \Doctrine\Common\Collections\ArrayCollection();
}
public function addItem(\Publicartel\AppBundle\Entity\PlaylistContent $content)
{
$content->setPlaylist($this);
$this->items->add($content);
return $this;
}
public function removeItem(\Publicartel\AppBundle\Entity\PlaylistContent $content)
{
$this->items->removeElement($content);
}
public function getItems()
{
return $this->items;
}
}
class PlaylistContent
{
private $content;
public function setContent(\Publicartel\AppBundle\Entity\Content $content = null)
{
$this->content = $content;
return $this;
}
public function getContent()
{
return $this->content;
}
}
// The controller:
$playlists = $em->getRepository('PublicartelAppBundle:Playlist')->getAllPlaylist();
return $this->render('PublicartelAppBundle:Player:calendar.html.twig', array(
'playlists' => $playlists,
));
// The query
public function getAllPlaylist()
{
$em = $this->getEntityManager();
$dql = 'SELECT p, cnt, plc FROM Publicartel\AppBundle\Entity\Playlist p
LEFT JOIN p.items cnt
LEFT JOIN cnt.content plc';
$query = $this->getEntityManager()
->createQuery($dql)
->setHydrationMode(\Doctrine\ORM\Query::HYDRATE_ARRAY);
return $query->execute();
}
The consultation seeks elements of the content entity, so it takes a left join on ' items' and 'content'.
// The twig template
I have sought access to the element of two ways:
{% for playlist in playlists.items.content %}
<img src="/{{ playlist.path}}">
{% endfor %}
Key "items" for array with keys " 0, 1 " does not exist in PublicartelAppBundle : Player : calendar.html.twig at line 215
{% for playlist in playlists %}
<img src="/{{ playlist.items.content.path }}">
{% endfor %}
Key "content" for array with keys "0, 1" does not exist in PublicartelAppBundle:Player:calendar.html.twig at line 223
'Path' is an attribute for entity 'Content' that I want show.

Answer 1

I guess you need to loop like this:
{% for playlistContent in playlists.items %}
{% if playlistContent.content is not null %}
<img src="/{{ playlistContent.content.path }}">
{% endif %}
{% endfor %}
EDIT:
That found:
{% for playlist in playlists %}
{% for playlistContent in playlist.items %}
<img src="/{{ playlistContent.content.screenshot}}">
<img src="/{{ playlistContent.content.path}}">
{% endfor %}
{% endfor %}

Answer 2

playlists.items is an array of objects not an object. Therefore you must loop through it.