API not returning auto generated ID - symfony

Question

Am working on Symfony API Platform, to add and retrieve something. Table has two fields id and title.
But when i run the GET query the API is returning title only not id.
How to return ID too?
My Annotation:-
* #ORM\Table(
* name="school",
* #ApiResource(
* attributes={
* "order"={"title": "ASC"},
* "normalization_context"={"groups"={"school.read"},
"enable_max_depth"=true},
* },
* itemOperations={
* "get",
* "put"
* },
* collectionOperations={
* "get"={
* "normalization_context"={
* "groups"={"school.read"}
* }
* }
* },
* normalizationContext={
* "groups"={"school.read"}
* },
* denormalizationContext={
* "groups"={"school.write"}
* }
* )
* #ORM\Entity(repositoryClass="Eqsgroup\Repository\SchoolRepository")
* #UniqueEntity(
* "title",
* repositoryMethod="findByUniqueCriteria",
* message="School already exists."
* )
*/
This is the Entity class
class School
{
/**
* #var string the id of this School
*
* #ORM\Id
* #ORM\Column(type="guid", unique=true)
* #ORM\GeneratedValue(strategy="CUSTOM")
* #ORM\CustomIdGenerator(class="Ramsey\Uuid\Doctrine\UuidGenerator")
* #Groups({"school.read, school.write"})
*/
private $id;
/**
* #var string The title of the school
*
* #ORM\Column(type="string", length=255)
* #Assert\NotNull(message="school should not be empty")
* #Assert\NotBlank(message="school should not be empty")
* #Assert\Length(
* min = 1,
* max = 250,
* minMessage = "length.min,{{ limit }}",
* maxMessage = "length.max,{{ limit }}"
* )
* #Groups({"school.read", "school.write"})
*/
private $title;
public function __construct(){ }
public function getId(): ?string
{
return $this->id;
}
public function getTitle(): ?string
{
return $this->title;
}
public function setTitle(string $title): self
{
$this->title = $title;
return $this;
}
This is the output am currently getting:
[
{
"title": "Test"
},
{
"title": "Test2"
},
]
The expected output will include the auto generated is along with title.

Answer 1

Add the #Groups to allow Apli-Platform to read each field you want like this :
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
* #Groups({"school.read", "school.write"})
*/
private $id;
Have a look to the documentation here :
https://api-platform.com/docs/core/serialization/#the-serialization-context-groups-and-relations

Answer 2

Did you configure which attributes you want to expose ?
If not, configure it in the yaml of your entity :
# I don't know the path to your entity, just modify what you need to
XXXX\XXXX\XXXX\XXXX\School:
exclusion_policy: ALL
properties:
id:
expose: true
title:
expose: true