[Symfony]Upload wielu plików, problem z CollectionType Opcje

[PawelC]

Witam,
Piszę aplikację w symfony która daje możliwość uploadu wielu plików na raz. Niestety mam problem z formularzem. Mam następujący kod
Klasa Entity

[PHP] pobierz, plaintext 
<?php
 
namespace AppBundle\Entity;
 
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;
 
/**
 * @ORM\Entity
 */
class DiaryContent
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;
 
    /**
     * @ORM\Column(type="integer")
     */
    protected $author_id;
 
    /**
     * @ORM\Column(type="text")
     */
    protected $title;
 
    /**
     * @ORM\Column(type="text")
     */
    protected $content;
 
    /**
     * @ORM\Column(type="datetime")
     */
    protected $data;
 
 
    /**
     * @ORM\Column(type="text")
     */
    protected $images;
 
    public function __construct()
    {
        $this->images = new ArrayCollection();
    }
 
    /**
     * @return mixed
     */
    public function getId()
    {
        return $this->id;
    }
 
    /**
     * @param mixed $id
     */
    public function setId($id)
    {
        $this->id = $id;
    }
 
    /**
     * @return mixed
     */
    public function getAuthorId()
    {
        return $this->author_id;
    }
 
    /**
     * @param mixed $author_id
     */
    public function setAuthorId($author_id)
    {
        $this->author_id = $author_id;
    }
 
    /**
     * @return mixed
     */
    public function getTitle()
    {
        return $this->title;
    }
 
    /**
     * @param mixed $title
     */
    public function setTitle($title)
    {
        $this->title = $title;
    }
 
    /**
     * @return mixed
     */
    public function getContent()
    {
        return $this->content;
    }
 
    /**
     * @param mixed $content
     */
    public function setContent($content)
    {
        $this->content = $content;
    }
 
    /**
     * @return mixed
     */
    public function getData()
    {
        return $this->data;
    }
 
    /**
     * @param mixed $data
     */
    public function setData($data)
    {
        $this->data = $data;
    }
 
    /**
     * @return mixed
     */
    public function getImages()
    {
        return $this->images;
    }
 
    /**
     * @param mixed $images
     */
    public function setImages($images)
    {
        $this->images = $images;
    }
}
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Kod formularza

[PHP] pobierz, plaintext 
<?php
 
namespace AppBundle\Form;
 
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\Extension\Core\Type\CollectionType;
use Symfony\Component\Form\Extension\Core\Type\FileType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
 
class DiaryContentType extends AbstractType
{
    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('author_id')->add('title')->add('content')->add('data')->add('images', CollectionType::class, array(
            'entry_type' => FileType::class,
 
        ));
    }
 
    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'data_class' => 'AppBundle\Entity\DiaryContent'
        ));
    }
 
    /**
     * {@inheritdoc}
     */
    public function getBlockPrefix()
    {
        return 'appbundle_diarycontent';
    }
 
 
}
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oraz jego wywołanie w kontrolerze

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$diaryContent = new DiaryContent();
 
        $form = $this->createFormBuilder($diaryContent)
            ->add("title", TextType::class)
            ->add('content', TextareaType::class)
            ->add('images', CollectionType::class, array(
                'entry_type' => FileType::class,
                'required' => false,
                'mapped' => false,
                'allow_add' => true,
            ))->getForm();
 
        return $this->render('@App/Diary/new.html.twig', array(
            'form' => $form->createView(),
        ));
[PHP] pobierz, plaintext 

Problem jest taki, że wyświetlają mi się wszystkie pola formularza, poza tym z CollectionType, jak zmienię na FileType to pokazuje tylko jeden plik. Ma ktoś jakieś sensowne pomysły? Ogólnie chciałbym zrobić formularz do uploadu zdjęć bez limitu, ale mi nie idzie.