Symfony One to Many Form Builder

### Profile entity
class Profile{
    ... (your entity codes) 

    //ONE TO MANY RELATİONSHİP
    /**
     * @ORM\OneToMany(targetEntity="AppBundle\Entity\Graduate",mappedBy="profile",cascade={"all"})
     */
    private $graduates;
    
    //THİS CODE NOT GENARATE AUTO FROM SYMFONY (php bin/consele do:ge:entity App 
     /**
     * Get graduates 
     *
     * @return \Doctrine\Common\Collections\Collection
     */
    public function setGraduates(\AppBundle\Entity\Graduate $graduate)
    {

        $this->graduates[] = $graduate;
        $graduate->setProfile($this);//This is important code

        return $this;

    }
    
}


####Graduate entity

class Graduate{

    ... (your entity codes)
    
    //MANY TO ONE RELATİONSHİP     
    /**
     * @ORM\ManyToOne(targetEntity="AppBundle\Entity\Profile", inversedBy="graduates")
     * @ORM\JoinColumn(name="profile_id",referencedColumnName="id",onDelete="CASCADE")
     */
    private $profile;
}


##FORMBUİLDER PROFİLE
class ProfileType extends AbstractType
{

    /**
     * {@inheritdoc}
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
      ... (your form codes)
      $builder->add('graduates', GraduateType::class, array("label" => false));
    }
}