Explode an Entity Object in Symfony2 - php

Question

I'm trying to create galleries in my Symfony2 Web App.
Each post may or may not have a gallery. My galleries are text mapping types, under the Post entity/class:
#Post.orm.yml
MyProject\MyProjectBundle\Entity\Post:
type: entity
table: post
repositoryClass: MyProject\MyProjectBundle\Entity\PostRepository
id:
id:
type: integer
generator: { strategy: AUTO }
fields:
# ...
gallery:
type: text
nullable: true
#...
As there are many images in a gallery, I figured it would have made sense to separate each image with a comma via my data fixture:
image1.png, image2.jpg, examplename-3rdimage.gif, 4thandfinal.jpg
However, I want the gallery to be output like this when it's viewed:
<li>image1.png</li>
<li>image2.jpg</li>
<li>examplename-3rdimage.gif</li>
<li>4thandfinal.jpg</li>
My controller then calls for the Post Entity:
/* PostController.php */
public function postshowAction($id)
{
$em = $this->getDoctrine()->getManager();
$entities = $em->getRepository('MPMPBBundle:Post')->find($id);
$gallery = $em->getRepository('MPMPBBundle:Post')->getGallery();
if (!$entities) {
throw $this->createNotFoundException('Unable to find Post entity.');
}
return $this->render('MPMPBBundle:Post:postshow.html.twig', array(
'entities' => $entities,
'gallery' => $gallery
));
}
As you may have noticed, I reference the function: getGallery() from my repository class: PostRepository:
/* PostRepository.php */
class PostRepository extends EntityRepository
{
public function getGallery()
{
$postGallery = $this->createQueryBuilder('e')
->select('e.gallery')
->getQuery()
->getResult();
$gallery = array();
foreach ($postGallery as $postGal)
{
$gallery = array_merge(explode(",", $postGal['gallery']), $gallery);
}
foreach ($gallery as &$gal)
{
$gal = trim($gal);
}
return $gallery;
}
}
Finally, my twig file: postshow.html.twig, looks like this:
{% for gallery in gallery %}
<li>{{ gallery }}</li>
{% endfor %}
To clarify, what I am looking to achieve is this:
# mysite.com/post/post-1
<li>image1.png</li>
<li>image2.jpg</li>
<li>examplename-3rdimage.gif</li>
<li>4thandfinal.jpg</li>
# mysite.com/post/post-2
<li>image5.png</li>
<li>image11.jpg</li>
<li>examplename-18thimage.gif</li>
<li>22ndandfinal.jpg</li>
Each post displays it's respective gallery.
With what's written above, what is achieved is that ALL the Gallery items from every Post is output, whereas I only need the gallery item for individual posts:
# mysite.com/post/post-1
<li>image1.png</li>
<li>image2.jpg</li>
<li>examplename-3rdimage.gif</li>
<li>4thandfinal.jpg</li>
<li>image5.png</li>
<li>image11.jpg</li>
<li>examplename-18thimage.gif</li>
<li>22ndandfinal.jpg</li>
# mysite.com/post/post-2
<li>image1.png</li>
<li>image2.jpg</li>
<li>examplename-3rdimage.gif</li>
<li>4thandfinal.jpg</li>
<li>image5.png</li>
<li>image11.jpg</li>
<li>examplename-18thimage.gif</li>
<li>22ndandfinal.jpg</li>

Answer 1

The gallery field is in the Post table, so you dont need to query again in the db, just get the gallery from the current entitie and explode() it like this:
/* PostController.php */
public function postshowAction($id)
{
$em = $this->getDoctrine()->getManager();
$entities = $em->getRepository('MPMPBBundle:Post')->find($id);
$gallery = null;
if (null !== $entities->getGallery())
{
$gallery = explode(",", $entities->getGallery());
$gallery = array_map("trim", $gallery);
}
if (!$entities) {
throw $this->createNotFoundException('Unable to find Post entity.');
}
return $this->render('MPMPBBundle:Post:postshow.html.twig', array(
'entities' => $entities,
'gallery' => $gallery
));
}