Question

I want to do mapping that does this:

User can own multiple Games. Games can have multiple owners.

I have id column in game table and game and user columns in ownership table. How I can connect these fields? I want to have game and user fields in ownership related to user and game tables.

I tried OneToMany and ManyToMany, but the first one results in generating additional columns. I don’t want to insert anything in game table.

–edit–
My @ManyToMany code:

/**
 * @ORM\ManyToMany(targetEntity="Ownership")
 * @ORM\JoinTable(name="ownership",
 *      joinColumns={JoinColumn(name="user", referencedColumnName="id")},
 *      inverseJoinColumns={JoinColumn(name="game", referencedColumnName="id")}
 *      )
 */

It causes an error in Symfony’s command line:

  [Doctrine\Common\Annotations\AnnotationException]                            
  [Semantical Error] Couldn't find constant JoinColumn, property GameShelf\Us  
  ersBundle\Entity\User::$ownership.  

Answer 1

Of course you need many to many relations if, like you said:

User can own multiple Games. Games can have multiple owners.

The Doctrine should create third table (which could contains only two foreign keys: game_id and ownership_id).

The error is caused because Doctrine dosen’t know what JoinColumn is. You just did wrong annotation because you forgot (again! ;)) precede JoinColumn with `@ORM. The right annotation should look like this:

/**
 * @ORM\ManyToMany(targetEntity="Ownership")
 * @ORM\JoinTable(name="ownership",
 *      joinColumns={@ORM\JoinColumn(name="user", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="game", referencedColumnName="id")}
 *      )
 */