Doctrine Many-to-Many, Repository->findBy()

composer.json

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        "php": ">=5.3.3",
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        "doctrine/orm": ">=2.2.3,<2.4-dev",
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        "fzaninotto/faker": "1.1.*",
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        "stof/doctrine-extensions-bundle": "dev-master",
        "friendsofsymfony/user-bundle": "dev-master",
        "hwi/oauth-bundle": "*"
        
    },
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gistfile1.txt

weide:community-dev sheeep [master] $ phpunit -c app/
PHPUnit 3.6.12 by Sebastian Bergmann.

Configuration read from /home/sheeep/dev/community-dev/app/phpunit.xml.dist

.........................E....................................... 65 / 67 ( 97%)
..

Time: 6 seconds, Memory: 124.25Mb

There was 1 error:

1) Oneup\BlogBundle\Tests\ORM\PostTest::testPlatformConnection
ErrorException: Notice: Undefined index: joinColumns in /home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php line 1495

/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php:1495
/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php:1452
/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php:1525
/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php:1018
/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php:842
/home/sheeep/dev/community-dev/vendor/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php:157
/home/sheeep/dev/community-dev/src/Oneup/BlogBundle/Tests/ORM/PostTest.php:102

--

Platform.php

<?php

namespace Oneup\CommunityBundle\Entity;

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

// [...] other namespace stuff

/**
 * @ORM\Entity(repositoryClass="Oneup\CommunityBundle\Entity\Repository\PlatformRepository")
 * @ORM\Table(name="platforms")
 */
class Platform
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;
    
    // [...] other field stuff
}

Post.php

<?php

namespace Oneup\BlogBundle\Entity;

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

// [...] other namespace stuff

/**
 * @ORM\Entity(repositoryClass="Oneup\BlogBundle\Entity\Repository\PostRepository")
 * @ORM\Table(name="posts")
 */
class Post implements Likeable, Commentable, Taggable, PlatformAware
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;
        
    /**
     * @ORM\ManyToMany(targetEntity="Oneup\CommunityBundle\Entity\Platform", cascade={"persist"})
     * @ORM\JoinTable(name="map_post_platform",
     *      joinColumns={@ORM\JoinColumn(name="post_id", referencedColumnName="id")},
     *      inverseJoinColumns={@ORM\JoinColumn(name="platform_id", referencedColumnName="id")}
     *      )
     */
    protected $platforms;
    
    // [...] other fields
    
    /**
     * Constructor
     */
    public function __construct()
    {
        // [...]
        $this->platforms  = new ArrayCollection();
    }
}

PostTest.php

<?php

namespace Oneup\BlogBundle\Tests\ORM;

use Oneup\BlogBundle\Entity\Post;
use Oneup\BlogBundle\Entity\Category;
use Oneup\TestBundle\Model\ORM\ModelTest;

class PostTest extends ModelTest
{
    public function testPlatformConnection()
    {
        // get repositories
        // functions are part of TestBundle\Model\ORM\ModelTest
        $postRepo     = $this->getRepository();
        $platformRepo = $this->getRepository('OneupCommunityBundle:Platform');
        
        // get a platform for filtering
        $platform = $platformRepo->findOneByName('platformName');
        
        // every one of these methods will throw the same error
        $posts = $postRepo->findBy(array('platforms' => array($platform)));
        $posts = $postRepo->findByPlatforms($platform);
        $posts = $postRepo->findByPlatforms(array($platform));
        
        $this->assertInstanceOf('Oneup\BlogBundle\Entity\Post', $posts[0]);
    }
}