我无法在Symfony中从学说odm中检索嵌入式文档

Question

I have a "Page" document with multiple "PageContent" embedded documents. When I recover a "Page" the property "contents" is empty. If I don't hydrate results data is there but when i hydrate them, they disappear.

I read everything i found and i don't see i did anything different from every working example.

Please help me. I'm going crazy with all this.

Page Document:

namespace AppBundle\Document;

use Doctrine\ODM\MongoDB\Mapping\Annotations as MongoDB;

/**
 * @MongoDB\Document(collection="pages")
 */
class Page
{
    /**
     * @MongoDB\Id
     */
    protected $id;

    /**
     * @MongoDB\Field(type="string")
     */
    protected $name;

    /**
     * @MongoDB\Field(type="string")
     */
    protected $slug;

    /**
     * @MongoDB\EmbedMany(targetDocument="\AppBundle\Document\PageContent")
     */
    protected $contents = array();

    /**
     * @MongoDB\Field(type="date")
     */
    protected $createdAt;

    /**
     * @MongoDB\Field(type="date")
     */
    protected $updatedAt;

    /**
     * @MongoDB\Field(type="string")
     */
    protected $author;

    public function __toString()
    {
        return $this->getName();
    }

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

    /**
     * Set name
     *
     * @param string $name
     * @return $this
     */
    public function setName($name)
    {
        $this->name = $name;
        return $this;
    }

    /**
     * Get name
     *
     * @return string $name
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set slug
     *
     * @param string $slug
     * @return $this
     */
    public function setSlug($slug)
    {
        $this->slug = $slug;
        return $this;
    }

    /**
     * Get slug
     *
     * @return string $slug
     */
    public function getSlug()
    {
        return $this->slug;
    }

    /**
     * Set createdAt
     *
     * @param date $createdAt
     * @return $this
     */
    public function setCreatedAt($createdAt)
    {
        $this->createdAt = $createdAt;
        return $this;
    }

    /**
     * Get createdAt
     *
     * @return date $createdAt
     */
    public function getCreatedAt()
    {
        return $this->createdAt;
    }

    /**
     * Set updatedAt
     *
     * @param date $updatedAt
     * @return $this
     */
    public function setUpdatedAt($updatedAt)
    {
        $this->updatedAt = $updatedAt;
        return $this;
    }

    /**
     * Get updatedAt
     *
     * @return date $updatedAt
     */
    public function getUpdatedAt()
    {
        return $this->updatedAt;
    }

    /**
     * Set author
     *
     * @param string $author
     * @return $this
     */
    public function setAuthor($author)
    {
        $this->author = $author;
        return $this;
    }

    /**
     * Get author
     *
     * @return string $author
     */
    public function getAuthor()
    {
        return $this->author;
    }

    /**
     * Add content
     *
     * @param AppBundle\Document\PageContent $content
     */
    public function addContent(\AppBundle\Document\PageContent $content)
    {
        $this->contents[] = $content;
    }

    /**
     * Remove content
     *
     * @param AppBundle\Document\PageContent $content
     */
    public function removeContent(\AppBundle\Document\PageContent $content)
    {
        $this->contents->removeElement($content);
    }

    /**
     * Get contents
     *
     * @return \Doctrine\Common\Collections\Collection $contents
     */
    public function getContents()
    {
        return $this->contents;
    }
}

Page Content Document:

<?php

namespace AppBundle\Document;

use Doctrine\ODM\MongoDB\Mapping\Annotations as MongoDB;

/**
 * @MongoDB\EmbeddedDocument
 */
class PageContent
{
    /**
     * @MongoDB\Field(type="string")
     */
    protected $type;

    /**
     * @MongoDB\Field(type="string")
     */
    protected $content;

    /**
     * Set type
     *
     * @param string $type
     * @return $this
     */
    public function setType($type)
    {
        $this->type = $type;
        return $this;
    }

    /**
     * Get type
     *
     * @return string $type
     */
    public function getType()
    {
        return $this->type;
    }

    /**
     * Set content
     *
     * @param string $content
     * @return $this
     */
    public function setContent($content)
    {
        $this->content = $content;
        return $this;
    }

    /**
     * Get content
     *
     * @return string $content
     */
    public function getContent()
    {
        return $this->content;
    }
}

In a Controller:

 $dm = $this->get('doctrine_mongodb')->getManager();
            $document = $dm->createQueryBuilder('AppBundle:Page')
                ->field('id')->equals('someid')
                ->hydrate(false)
                ->getQuery()
                ->getSingleResult();

This returns data correctly:

array:7 [▼
  "_id" => MongoId {#439 ▶}
  "name" => "contenido 3"
  "slug" => "contenido-3"
  "contents" => array:1 [▼
    0 => array:2 [▼
      "type" => "html"
      "content" => "some content"
    ]
  ]
  "createdAt" => MongoDate {#440 ▶}
  "updatedAt" => MongoDate {#441 ▶}
  "author" => "adminpassb"
]

But this doesn't:

$dm = $this->get('doctrine_mongodb')->getManager();
        $document = $dm->createQueryBuilder('AppBundle:Page')
            ->field('id')->equals('someid')
            ->hydrate(true)
            ->getQuery()
            ->getSingleResult();

Page {#424 ▼
  #id: "57d7cdb15d6361ef0c3c986a"
  #name: "contenido 3"
  #slug: "contenido-3"
  #contents: []
  #createdAt: DateTime {#428 ▶}
  #updatedAt: DateTime {#430 ▶}
  #author: "adminpassb"
}

Answer 1

All embedMany mappings are retrieved as persistent collections which are loaded lazily. Depending on how you generated the output above, this would explain why you think it's empty. Running count or toArray on the collection should return the correct number of items.