doctrine2 association is not initialized

Question

I have a Class like the following:

/** @Entity **/
class orgGroup{

    //id and stuff...

    /**
     * @Column(type=\"string\")
     **/
    private $name         


        

Answer 1

Be sure to initialize the orgGroups collection in the orgGroupType entity

/**
 * @OneToMany(targetEntity="orgGroup", mappedBy="_orgGroupType")
 */
protected $orgGroups ;

public function __construct() {
    $this->orgGroups = new ArrayCollection();
}

You might need to include the following in the Entity

use Doctrine\Common\Collections\Collection,
Doctrine\Common\Collections\ArrayCollection;