Sync generated values docs for: UUIDs and ULIDs

Author: michaelKaefer

components/uid.rst

@@ -166,29 +166,26 @@ type, which converts to/from UUID objects automatically::
 
  The UUID type was introduced in Symfony 5.2.
 
-There is no generator to assign UUIDs automatically as the value of your entity
-primary keys, but you can use the following::
+There's also a Doctrine generator to help auto-generate UUID values for the
+entity primary keys::
 
  namespace App\Entity;
 
  use Doctrine\ORM\Mapping as ORM;
+ use Symfony\Bridge\Doctrine\IdGenerator\UuidGenerator;
  use Symfony\Component\Uid\Uuid;
- // ...
 
  class User implements UserInterface
  {
  /**
  * @ORM\Id
  * @ORM\Column(type="uuid", unique=true)
+ * @ORM\GeneratedValue(strategy="CUSTOM")
+ * @ORM\CustomIdGenerator(class=UuidGenerator::class)
  */
  private $id;
 
- public function __construct()
- {
- $this->id = Uuid::v4();
- }
-
- public function getId(): Uuid
+ public function getId(): ?Uuid
  {
  return $this->id;
  }
@@ -345,12 +342,12 @@ type, which converts to/from ULID objects automatically::
 There's also a Doctrine generator to help auto-generate ULID values for the
 entity primary keys::
 
+ namespace App\Entity;
+
+ use Doctrine\ORM\Mapping as ORM;
  use Symfony\Bridge\Doctrine\IdGenerator\UlidGenerator;
  use Symfony\Component\Uid\Ulid;
 
- /**
- * @ORM\Entity(repositoryClass="App\Repository\ProductRepository")
- */
  class Product
  {
  /**
@@ -361,8 +358,6 @@ entity primary keys::
  */
  private $id;
 
- // ...
-
  public function getId(): ?Ulid
  {
  return $this->id;