how to sort a multiple select field in symfony2 - php

Question

I have a table question, the field "valeurs default" has the answers to all the questions which's gonna be a multiple selection field my problem is to add (Action box) a small button to order the answers for example for the question: "age"--> the answers will be displayed after clicking on the order button: " 20->25 25->30 30->35 "
this is how it appears in my template
can you help me please?
this is my entity "Question"
class Question
{/**
* #var int
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="Libelle", type="string", length=150)
*/
private $libelle;
/**
* #var string
*
* #ORM\Column(name="TypeQuestion", type="string", length=150)
*/
protected $TypeQuestion;
/**
* #ORM\ManyToMany(targetEntity="tuto\BackofficeBundle\Entity\Service")
*/
protected $Service;
/**
* #ORM\ManyToMany(targetEntity="tuto\BackofficeBundle\Entity\ValeursDefault")
*/
protected $ValeursDefault;
/**
* Get id
*
* #return int
*/
public function getId()
{
return $this->id;
}
/**
* Set libelle
*
* #param string $libelle
*
* #return Question
*/
public function setLibelle($libelle)
{
$this->libelle = $libelle;
return $this;
}
/**
* Get libelle
*
* #return string
*/
public function getLibelle()
{
return $this->libelle;
}
/**
* Constructor
*/
public function __construct()
{
$this->Service = new \Doctrine\Common\Collections\ArrayCollection();
}
/**
* Add Service
*
* #param \tuto\BackofficeBundle\Entity\Service $service
* #return Question
*/
public function addService(\tuto\BackofficeBundle\Entity\Service $service)
{
$this->Service[] = $service;
return $this;
}
/**
* Remove Service
*
* #param \tuto\BackofficeBundle\Entity\Service $service
*/
public function removeService(\tuto\BackofficeBundle\Entity\Service $service)
{
$this->Service->removeElement($service);
}
/**
* Get Service
*
* #return \Doctrine\Common\Collections\Collection
*/
public function getService()
{
return $this->Service;
}
/**
* Add ValeursDefault
*
* #param \tuto\BackofficeBundle\Entity\ValeursDefault $valeursDefault
* #return Question
*/
public function addValeursDefault(\tuto\BackofficeBundle\Entity\ValeursDefault $valeursDefault)
{
$this->ValeursDefault[] = $valeursDefault;
return $this;
}
/**
* Remove ValeursDefault
*
* #param \tuto\BackofficeBundle\Entity\ValeursDefault $valeursDefault
*/
public function removeValeursDefault(\tuto\BackofficeBundle\Entity\ValeursDefault $valeursDefault)
{
$this->ValeursDefault->removeElement($valeursDefault);
}
/**
* Get ValeursDefault
*
* #return \Doctrine\Common\Collections\Collection
*/
public function getValeursDefault()
{
return $this->ValeursDefault;
}
/**
* Set TypeQuestion
*
* #param string $typeQuestion
* #return Question
*/
public function setTypeQuestion($typeQuestion)
{
$this->TypeQuestion = $typeQuestion;
return $this;
}
/**
* Get TypeQuestion
*
* #return string
*/
public function getTypeQuestion()
{
return $this->TypeQuestion;
}
}
the html.twig file

Answer 1

Write a twig extension that sorts ValeursDefault in twig.It's usually what I do with nested objects.
for more details http://symfony.com/doc/current/cookbook/templating/twig_extension.html
I had a similar problem before wanting to order child objects of an entity based on an attribute called position, so I wrote something like this
public function orderPosition($arr) {
$size = count($arr);
for ($i = 0; $i < $size; $i++) {
for ($j = 0; $j < $size - 1 - $i; $j++) {
if ($arr[$j + 1]->getPosition() < $arr[$j]->getPosition()) {
$this->swap($arr, $j, $j + 1);
}
}
}
return $arr;
}
For your case, instead of getPosition() you'd be using whatever function you have in ValeursDefault that you want to sort by

Answer 2

I think you can sort your values using Doctrine :
http://doctrine-orm.readthedocs.org/projects/doctrine-orm/en/latest/tutorials/ordered-associations.html
/**
* #ORM\ManyToMany(targetEntity="tuto\BackofficeBundle\Entity\ValeursDefault")
* #ORM\OrderBy({"value" = "ASC"})
*/
protected $ValeursDefault;