add a discrimnator type on onbjects

src/Bundle/ChillPersonBundle/Entity/AccompanyingPeriod.php

@@ -34,12 +34,16 @@ use Doctrine\ORM\Mapping as ORM;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
 use Chill\MainBundle\Entity\User;
 use Symfony\Component\Serializer\Annotation\Groups;
+use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 
 /**
  * AccompanyingPeriod Class
  *
  * @ORM\Entity(repositoryClass="Chill\PersonBundle\Repository\AccompanyingPeriodRepository")
  * @ORM\Table(name="chill_person_accompanying_period")
+ * @DiscriminatorMap(typeProperty="type", mapping={
+ *  "accompanying_period"=AccompanyingPeriod::class
+ *  })
  */
 class AccompanyingPeriod
 {
@@ -156,6 +160,7 @@ class AccompanyingPeriod
     /**
      * @var string
      * @ORM\Column(type="string", length=32, nullable=true)
+     * @Groups({"read"})
      */
     private $step = self::STEP_DRAFT;
     
@@ -532,7 +537,7 @@ class AccompanyingPeriod
         return $this->requestorPerson;
     }
 
-    public function setRequestorPerson(Person $requestorPerson = null): self
+    private function setRequestorPerson(Person $requestorPerson = null): self
     {
         $this->requestorPerson = $requestorPerson;
 
@@ -544,7 +549,7 @@ class AccompanyingPeriod
         return $this->requestorThirdParty;
     }
 
-    public function setRequestorThirdParty(ThirdParty $requestorThirdParty = null): self
+    private function setRequestorThirdParty(ThirdParty $requestorThirdParty = null): self
     {
         $this->requestorThirdParty = $requestorThirdParty;
 
@@ -567,10 +572,10 @@ class AccompanyingPeriod
      * The requestor is either an instance of ThirdParty, or an
      * instance of Person
      *
-     * @param $requestor Person|ThirdParty
+     * param $requestor Person|ThirdParty
      * @return self
      * @throw UnexpectedValueException if the requestor is not a Person or ThirdParty
-     *
+     * @Groups({"write"})
      */
     public function setRequestor($requestor): self
     {