使用AJAX上传图像并将文件名存储在数据库中 - [Doctrine 2-ZF2]

Question

我有2个实体（帖子和图片），字段集和表单（带有控制器）。

发表：     ID     标题

图片     ID     文件名     题词     POST_ID

所有形式，但我想用AJAX将（可以是多个）图像保存为png文件，当保存文件时，我想显示缩略图和输入文本（题词）。

然后，当我想上传到数据库（提交表单）时，将文件名保存在table.images中。

PostEntity

<?php
namespace Admin\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\Common\Collections\Collection as Collection;
use Doctrine\ORM\Mapping as ORM;

/**
* @ORM\Entity
* @ORM\Table(name="posts")
*/
class Posts
{
    /**
    * @ORM\Id
    * @ORM\Column(type="integer")
    * @ORM\GeneratedValue(strategy="AUTO")
    */
    protected $id;

    /** @ORM\Column(name="title", type="string", length=48) */
    protected $title;

    /**
    * @return integer
    */
    public function getId()
    {
        return $this->id;
    }

    /**
    * @param string $title
    * @return Posts
    */
    public function setTitle($title)
    {
        $this->title = $title;
        return $this;
    }

    /**
    * @return string
    */
    public function getTitle()
    {
        return $this->title;
    }
}

ImagesEntity

<?php
namespace Admin\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
* @ORM\Entity
* @ORM\Table(name="images")
*/
class Images
{
    /**
    * @ORM\Id
    * @ORM\Column(type="integer")
    * @ORM\GeneratedValue(strategy="AUTO")
    */
    protected $id;

    /** @ORM\Column(name="filename", type="string", length=255) */
    protected $filename;

    /**
    * @ORM\ManyToOne(targetEntity="Admin\Entity\Posts", inversedBy="images")
    * @ORM\JoinColumn(name="id", referencedColumnName="id", onDelete="CASCADE")
    */
    protected $post_id;

    /**
    * @return integer
    */
    public function getId() 
    {
        return $this->id;
    }

    /**
    * @param Images $filename
    * @return string
    */
    public function setFilename($filename)
    {
        if (is_array($filename) && isset($filename['tmp_name'])) {
            $filename = $filename['tmp_name'];
        }
        $this->filename = $filename;
    }

    /**
    * @return string 
    */
    public function getFilename() 
    {
        return $this->filename;
    }

    /**
    * @param Images $post_id
    * @return integer
    */
    public function setPost_id(Posts $post_id = null)
    {
        $this->post_id = $post_id;
        return $this;
    }

    /**
    * @return integer
    */
    public function getPost_id()
    {
        return $this->post_id;
    }
}

ImagesFieldset

<?php
namespace Admin\Form;

use Admin\Entity\Images;
use Doctrine\Common\Persistence\ObjectManager;
use DoctrineModule\Stdlib\Hydrator\DoctrineObject as DoctrineHydrator;
use Zend\Form\Fieldset;
use Zend\Form\Element;

class ImagesFieldset extends Fieldset
{
    public function __construct(ObjectManager $objectManager)
    {
        parent::__construct('image');

        $this->setHydrator(new DoctrineHydrator($objectManager, 'Admin\Entity\Images'))->setObject(new Imagenes());

        $this->add(array(
            'name' => 'filename',
            'type'  => 'Zend\Form\Element\File',
        ));

        $this->add(array(
            'name' => 'epigraph',
            'type' => 'Zend\Form\Element\Textarea',
        ));

        $this->add(array(
            'name' => 'post_id',
            'type'  => 'Zend\Form\Element\Hidden',
        ));

    }
}

PostsFieldset

<?php
namespace Admin\Form;

use Admin\Entity\Posts;
use Doctrine\Common\Persistence\ObjectManager;
use DoctrineModule\Stdlib\Hydrator\DoctrineObject as DoctrineHydrator;
use Zend\Form\Fieldset;
use Zend\Form\Element;

class PostsFieldset extends Fieldset
{
    public function __construct(ObjectManager $objectManager)
    {
        parent::__construct('noticias');
        $this->setHydrator(new DoctrineHydrator($objectManager, 'Admin\Entity\Posts'))->setObject(new Posts());

        $this->add(array(
            'name' => 'id',
            'type'  => 'Zend\Form\Element\Hidden',
        ));

        $this->add(array(
            'name' => 'title',
            'type'  => 'Zend\Form\Element\Text',
        ));

        $imagesFieldset = new \Admin\Form\ImagesFieldset($objectManager);
        $this->add(array(
            'type'    => 'Zend\Form\Element\Collection',
            'name'    => 'images',
            'options' => array(
                'count' => 1,
                'target_element' => $imagesFieldset
            )
        ));
    }
}

PostsForm

<?php
namespace Admin\Form;

use Admin\Entity\Posts;
use Doctrine\Common\Persistence\ObjectManager;
use DoctrineModule\Stdlib\Hydrator\DoctrineObject as DoctrineHydrator;
use Zend\Form\Form;

class PostsForm extends Form
{
    public function __construct(ObjectManager $objectManager)
    {
        parent::__construct('new_post');

        $this->setHydrator(new DoctrineHydrator($objectManager, '\Admin\Entity\Posts'));

        $postsFieldset = new \Admin\Form\PostsFieldset($objectManager);
        $postsFieldset->setUseAsBaseFieldset(true);
        $this->add($postsFieldset);

        $this->add(array(
            'type' => 'Zend\Form\Element\Csrf',
            'name' => 'csrf',
        ));

        $this->add(array(
            'name' => 'submit',
            'type' => 'Zend\Form\Element\Submit',
            'attributes' => array(
                'class' => 'btn btn-primary',
                'id' => 'enviar',
            ),
        ));

        $this->setValidationGroup([
            'posts' => [
                'id',
                'title',
                'images' => [
                    'filename',
                    'post_id',
                ],
            ],
        ]);
    }
}

CreateAction

public function crearAction()
{
    $objectManager = $this->getServiceLocator()->get('Doctrine\ORM\EntityManager');

    $form = new \Admin\Form\NoticiasForm($objectManager);
    $posts= new \Admin\Entity\Posts();

    $form->bind($posts);
    if ($this->request->isPost()) {
        $formData = array_merge_recursive(
            $this->request->getPost()->toArray(),
            $this->request->getFiles()->toArray()
        );
        $form->setData($formData);
        if ($form->isValid()) {
            $objectManager->persist($noticia);
            $objectManager->flush();
            die;
        }
    }
    return new ViewModel([
        'form' => $form,
    ]);
}

查看

<?php
$form->setAttribute('action', $this->url('posts', ['action' => 'create']));
$form->prepare();
echo $this->form()->openTag($form);
$posts = $form->get('posts');
?>
<?php echo $this->formHidden($posts->get('id')); ?>
<?php echo $this->formRow($posts->get('title')); ?>
<?php echo $this->formCollection($posts->get('images')); ?>
<?php echo $this->formRow($form->get('submit')); ?>

我懒得做这个问题，不做这个问题， 我正在接受来自各地的概念，但三个月前我一直试图这样做，这一次特别问我要实施的想法。 非常感谢你帮助我。