blocks|key|4507666|text|假设您的模型如下所示|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4507667|/**
+*+@Document
+*/
class+User
{
++++/**+@Id+*/
++++private+$id;

++++/**+@ReferenceMany(targetDocument="Something")+*/
++++private+$somethings;

++++public+function+__construct()
++++{
++++++++$this->somethings+=+new+\Doctrine\Common\Collections\ArrayCollection;
++++}

++++public+function+getSomethings()
++++{
++++++++return+$this->somethings;
++++}
}|code-block|syntax|javascript|4507668|您应该能够使用以下命令检索引用的模型|4507669|$user+=+$dm->find('User',+$id);
$somethings+=+$user->getSomethings();
$firstSomething+=+$somethings->current();+//+will+return+false+if+empty,+can+also+use+first()
foreach+($somethings+as+$something)+{
++++//+and+so+on
}|4507670|请勿尝试对模型代理对象执行var_dump()或print_r()操作。它们包含许多递归引用，尝试将它们呈现为输出会耗尽您的可用内存。|offset|length|style|CODE|4507671|entityMap^0|0|0|0|0|D|A|O|9|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@$M|X|N|Y|O|P]|$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|R|$]]

Provided your model looks something like this

<pre><code>/**
 * @Document
 */
class User
{
 /** @Id */
 private $id;

 /** @ReferenceMany(targetDocument="Something") */
 private $somethings;

 public function __construct()
 {
 $this-&gt;somethings = new \Doctrine\Common\Collections\ArrayCollection;
 }

 public function getSomethings()
 {
 return $this-&gt;somethings;
 }
}
</code></pre>

You should be able to retrieve the referenced models using

<pre><code>$user = $dm-&gt;find('User', $id);
$somethings = $user-&gt;getSomethings();
$firstSomething = $somethings-&gt;current(); // will return false if empty, can also use first()
foreach ($somethings as $something) {
 // and so on
}
</code></pre>

Do not attempt to <code>var_dump()</code> or <code>print_r()</code> the model proxy objects. These contain many recursive references and you will exhaust your available memory attempting to render them as output.

blocks|key|2715653|text|从引用的集合中获取单个对象的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2715654|$pets+=+$this->user->getPets();+++++
if(!is_null($pets)+&&+$pets->count()+>+0)+{
+++$this->pet+=+$pets->first();
}|code-block|syntax|javascript|2715655|最大的学习(感谢@Phil)：|2715656|2715657|不要尝试对模型代理对象执行var_dump()或print_r()操作。它们包含许多递归引用，尝试将它们呈现为输出会耗尽您的可用内存。|blockquote|2715658|2715659|2715660|致以最好的问候，斯蒂芬|2715661|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|W|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|Z|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|R|$]]

Solution to get a single object from a referenced collection:

<pre><code>$pets = $this-&gt;user-&gt;getPets(); 
if(!is_null($pets) &amp;&amp; $pets-&gt;count() &gt; 0) {
 $this-&gt;pet = $pets-&gt;first();
}
</code></pre>

Biggest learning (thanks to @Phil):

<blockquote>
 Do not attempt to var_dump() or
 print_r() the model proxy objects.
 These contain many recursive
 references and you will exhaust your
 available memory attempting to render
 them as output.
</blockquote>

Best regards,
Stephan

blocks|key|4507745|text|尝试重新生成加水器类。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4507746|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

try regenerating hydrator classes.

my szenario in detail, iv'e got one User Document:

<pre><code>/** @Document(collection="user") */
class User
{
 /** @Id */
 private $id;

 /** @ReferenceMany(targetDocument="Pet") */
 private $pet;

 public function getPet()
 {
 return $this-&gt;pet;
 }
}
</code></pre>

and iv'e got one Pet document:

<pre><code>/** @Document(collection="pet") */
class Pet
{
 /** @Id */
 private $id;

 /** @ReferenceMany(targetDocument="User") */
 private $user;

 public function getUser()
 {
 return $this-&gt;user;
 }
}
</code></pre>

A many to many correlation. If i call the following code for an existing document...

<pre><code>$result = $this-&gt;_dbContainer-&gt;getDocumentManager()-&gt;getRepository('User')-&gt;findBy(array('id' =&gt; =&gt; 'XZTZHJ323LKFHGJKLHGFGHJK'));
print_r($result-&gt;toArray());
</code></pre>

...it ends in an endless loop. Error message:

<pre><code>PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 112721921 bytes) in ...
</code></pre>

If i execute the following code:

<pre><code>var_dump($result-&gt;count());
</code></pre>

The result ist one / it exist (everything ok). A var_dump of $result->current() is NULL. The method getMongoData returns the following data (which is correct):

<pre><code>Array ( [0] =&gt; Array ( [$ref] =&gt; example [$id] =&gt; MongoId Object ( [$id] =&gt; 4ddac7667294c79e17000002 ) [$db] =&gt; test ) )
</code></pre>

If i execute the following code:

<pre><code>var_dump($result-&gt;current());
</code></pre>

The result is boolean (false).

Any ideas?

Doctrine MongoDB ODM load referenced documents

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我的szenario的详细信息，iv'e有一个用户文档：/** @Document(collection="user") */class User{    /** @Id */    private $id;    /** @ReferenceMany(targetDocument="Pet") */    priva...

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