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PODoctrine 2 - Access level problems when using Class Table Inheritance
 

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  1. PODoctrine 2 - Access level problems when using Class Table Inheritance
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    <p>I'm trying to implent the <a href="http://www.doctrine-project.org/docs/orm/2.0/en/reference/inheritance-mapping.html#class-table-inheritance" rel="nofollow">Class Table Inheritance</a> Doctrine 2 offers in my Symfony 2 project. Let's say a have a <strong>Pizza</strong> class, <strong>Burito</strong> class and a <strong>MacAndCheese</strong> class which all inherit from a <strong><em>Food</em></strong> class.</p> <p>The <strong><em>Food</em></strong> class has the following settings:</p> <pre><code>&lt;?php namespace Kitchen; use Doctrine\ORM\Mapping as ORM; /** * @ORM\Entity * @ORM\Table(name="food") * @ORM\InheritanceType("JOINED") * @ORM\DiscriminatorColumn(name="dish", type="string") * @ORM\DiscriminatorMap({"pizza" = "Pizza", "burito" = "Burito", "mac" =&gt; "MacAndCheese"}) */ class Food { /** * @ORM\Id * @ORM\Column(type="integer") * @ORM\GeneratedValue(strategy="AUTO") */ protected $id; </code></pre> <p>And the inherited classes have these settings (<strong>Pizza</strong> for example):</p> <pre><code>&lt;?php namespace Kitchen; use Doctrine\ORM\Mapping as ORM; /** * @ORM\Entity * @ORM\Table(name="food_pizza") */ class Pizza extends Food { </code></pre> <p>When running <em>doctrine:schema:update --force</em> from the Symfony 2 app/console I get an error about the access level of <em>$id</em> in the children of <strong><em>Food</em></strong> (<strong>Pizza</strong> for example), stating it must be protected or weaker. I haven't declared <em>$id</em> anywhere in the <strong>Pizza</strong>, since I reckoned it would be inherited from <strong><em>Food</em></strong>.</p> <p>So I tried to declare <em>$id</em>, but that gives me an error, cause I can't redeclare $id. I figure I need some kind of reference to $id from <strong><em>Food</em></strong> in <strong>Pizza</strong>, but the Doctrine 2 documentation didn't really give me a clear answer on what this would look like.</p> <p>Hopefully you understand what I mean and can help me.</p>
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