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    <p>It's a good practice to allways declare your class' members private and to generate getters and setters on your class members.</p> <p>In your case, you don't generate getters and setters (there is no <code>getId()</code> method on your <code>NewCategory</code> class).</p> <p>That's how your <code>NewCategory</code> class should look like :</p> <pre><code>/** @Entity @Table(name="news_category") */ class NewsCategory { /** * @Id @GeneratedValue @Column(type="integer") * @var integer */ private $id; /** * @Column(type="string", length=50, unique=TRUE) * @var string */ private $name; /** * @OneToMany(targetEntity="News", mappedBy="category") */ private $news; public function __construct() { $this-&gt;news = new \Doctrine\Common\Collections\ArrayCollection; } public function getId(){ return $this-&gt;id;} public function setId($id){ $this-&gt;id = $id;} public function setName($name) { $this-&gt;name = $name; } public function getName() { return $this-&gt;name; } public function setNews($news) {$this-&gt;news = $news;} public function getNews() { return $this-&gt;news; } } </code></pre> <p>The generated proxies will not generate <em>magically</em> getters and setters on every of your properties (it would break the OOP's encapsulation principle). You can find more documentations about proxies here : <a href="http://www.doctrine-project.org/docs/orm/2.0/en/reference/configuration.html#proxy-objects" rel="nofollow">http://www.doctrine-project.org/docs/orm/2.0/en/reference/configuration.html#proxy-objects</a></p>
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    1. PODoctrine 2.1 - Call to undefined method + MyMethod(Proxy)?
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    1. USBlackCharly
    1. USBlackCharly
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    1. COOn doctrine documentation, they have members on `protected`. And still, `protected` type is in Your example :). So what's better than?
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      1. USKrzysztof Trzos
    2. COYou're right, I corrected my answer and mark the members as private. As you can see in the doctrine documentation's link I gave they don't access properties outside the class. [Here](http://www.doctrine-project.org/docs/orm/2.1/en/reference/working-with-objects.html#entity-object-graph-traversal) you can see they use public getters and setters on private properties.
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    3. CODon't just blindly use `private` or `protected` without knowing why. `private` restricts access to those properties to the owning class only (no sub-classes). `protected` grants access to child classes. One benefit to using `protected` is that it allows your [entities to be serialised](http://www.doctrine-project.org/docs/orm/2.2/en/reference/working-with-objects.html#merging-entities)
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