Change unique field of User entity to username with form validation

Author: codedmonkey

migrations/Version20250703184453.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20250703184453 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Change unique user field';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            DROP INDEX uniq_8d93d649e7927c74
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE UNIQUE INDEX UNIQ_8D93D649F85E0677 ON "user" (username)
+        SQL);
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+            DROP INDEX UNIQ_8D93D649F85E0677
+        SQL);
+        $this->addSql(<<<'SQL'
+            CREATE UNIQUE INDEX uniq_8d93d649e7927c74 ON "user" (email)
+        SQL);
+    }
+}

src/Doctrine/Entity/User.php

@@ -8,25 +8,27 @@
 use Doctrine\ORM\Mapping\GeneratedValue;
 use Doctrine\ORM\Mapping\Id;
 use Doctrine\ORM\Mapping\Table;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
 use Symfony\Component\Security\Core\User\UserInterface;
 
 #[Entity(repositoryClass: UserRepository::class)]
 #[Table(name: '`user`')]
+#[UniqueEntity('username', message: 'This username is already taken')]
 class User implements UserInterface, PasswordAuthenticatedUserInterface
 {
     #[Column]
     #[GeneratedValue]
     #[Id]
     private ?int $id = null;
 
-    #[Column(length: 80)]
+    #[Column(length: 80, unique: true)]
     private ?string $username = null;
 
     #[Column(length: 180, nullable: true)]
     private ?string $name = null;
 
-    #[Column(length: 180, unique: true, nullable: true)]
+    #[Column(length: 180, nullable: true)]
     private ?string $email = null;
 
     #[Column]

translations/validators.en.yaml

@@ -3,3 +3,5 @@ Enter an email address: Enter an email address
 Please enter a password: Please enter a password
 The password fields must match: The password fields must match
 Your password should be at least {{ limit }} characters: Your password should be at least {{ limit }} characters
+
+This username is already taken: This username is already taken