diff --git a/.gitignore b/.gitignore
index 4daae38..2b08932 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,4 @@
 /public/assets/
 /assets/vendor/
 ###< symfony/asset-mapper ###
+./idea
\ No newline at end of file
diff --git a/config/packages/security.yaml b/config/packages/security.yaml
index 367af25..6b3167f 100644
--- a/config/packages/security.yaml
+++ b/config/packages/security.yaml
@@ -4,14 +4,18 @@ security:
         Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface: 'auto'
     # https://symfony.com/doc/current/security.html#loading-the-user-the-user-provider
     providers:
-        users_in_memory: { memory: null }
+        # used to reload user from session & other features (e.g. switch_user)
+        app_user_provider:
+            entity:
+                class: App\Entity\User
+                property: nickname
     firewalls:
         dev:
             pattern: ^/(_(profiler|wdt)|css|images|js)/
             security: false
         main:
             lazy: true
-            provider: users_in_memory
+            provider: app_user_provider
 
             # activate different ways to authenticate
             # https://symfony.com/doc/current/security.html#the-firewall
diff --git a/src/Entity/User.php b/src/Entity/User.php
new file mode 100644
index 0000000..4536d5c
--- /dev/null
+++ b/src/Entity/User.php
@@ -0,0 +1,186 @@
+<?php
+
+namespace App\Entity;
+
+use App\Repository\UserRepository;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
+use Symfony\Component\Security\Core\User\UserInterface;
+
+#[ORM\Entity(repositoryClass: UserRepository::class)]
+#[ORM\Table(name: '`user`')]
+#[ORM\UniqueConstraint(name: 'UNIQ_IDENTIFIER_NICKNAME', fields: ['nickname'])]
+class User implements UserInterface, PasswordAuthenticatedUserInterface
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private ?int $id = null;
+
+    #[ORM\Column(length: 180)]
+    private ?string $nickname = null;
+
+    /**
+     * @var list<string> The user roles
+     */
+    #[ORM\Column]
+    private array $roles = [];
+
+    /**
+     * @var string The hashed password
+     */
+    #[ORM\Column]
+    private ?string $password = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $firstName = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $lastName = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $tel = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $address = null;
+
+    #[ORM\Column(length: 255)]
+    private ?string $mail = null;
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getNickname(): ?string
+    {
+        return $this->nickname;
+    }
+
+    public function setNickname(string $nickname): static
+    {
+        $this->nickname = $nickname;
+
+        return $this;
+    }
+
+    /**
+     * A visual identifier that represents this user.
+     *
+     * @see UserInterface
+     */
+    public function getUserIdentifier(): string
+    {
+        return (string) $this->nickname;
+    }
+
+    /**
+     * @see UserInterface
+     *
+     * @return list<string>
+     */
+    public function getRoles(): array
+    {
+        $roles = $this->roles;
+        // guarantee every user at least has ROLE_USER
+        $roles[] = 'ROLE_USER';
+
+        return array_unique($roles);
+    }
+
+    /**
+     * @param list<string> $roles
+     */
+    public function setRoles(array $roles): static
+    {
+        $this->roles = $roles;
+
+        return $this;
+    }
+
+    /**
+     * @see PasswordAuthenticatedUserInterface
+     */
+    public function getPassword(): ?string
+    {
+        return $this->password;
+    }
+
+    public function setPassword(string $password): static
+    {
+        $this->password = $password;
+
+        return $this;
+    }
+
+    /**
+     * @see UserInterface
+     */
+    public function eraseCredentials(): void
+    {
+        // If you store any temporary, sensitive data on the user, clear it here
+        // $this->plainPassword = null;
+    }
+
+    public function getFirstName(): ?string
+    {
+        return $this->firstName;
+    }
+
+    public function setFirstName(string $firstName): static
+    {
+        $this->firstName = $firstName;
+
+        return $this;
+    }
+
+    public function getLastName(): ?string
+    {
+        return $this->lastName;
+    }
+
+    public function setLastName(string $lastName): static
+    {
+        $this->lastName = $lastName;
+
+        return $this;
+    }
+
+    public function getTel(): ?string
+    {
+        return $this->tel;
+    }
+
+    public function setTel(string $tel): static
+    {
+        $this->tel = $tel;
+
+        return $this;
+    }
+
+    public function getAddress(): ?string
+    {
+        return $this->address;
+    }
+
+    public function setAddress(string $address): static
+    {
+        $this->address = $address;
+
+        return $this;
+    }
+
+    public function getMail(): ?string
+    {
+        return $this->mail;
+    }
+
+    public function setMail(string $mail): static
+    {
+        $this->mail = $mail;
+
+        return $this;
+    }
+}
+
+
diff --git a/src/Repository/UserRepository.php b/src/Repository/UserRepository.php
new file mode 100644
index 0000000..4f2804e
--- /dev/null
+++ b/src/Repository/UserRepository.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Repository;
+
+use App\Entity\User;
+use Doctrine\Bundle\DoctrineBundle\Repository\ServiceEntityRepository;
+use Doctrine\Persistence\ManagerRegistry;
+use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
+use Symfony\Component\Security\Core\User\PasswordAuthenticatedUserInterface;
+use Symfony\Component\Security\Core\User\PasswordUpgraderInterface;
+
+/**
+ * @extends ServiceEntityRepository<User>
+ */
+class UserRepository extends ServiceEntityRepository implements PasswordUpgraderInterface
+{
+    public function __construct(ManagerRegistry $registry)
+    {
+        parent::__construct($registry, User::class);
+    }
+
+    /**
+     * Used to upgrade (rehash) the user's password automatically over time.
+     */
+    public function upgradePassword(PasswordAuthenticatedUserInterface $user, string $newHashedPassword): void
+    {
+        if (!$user instanceof User) {
+            throw new UnsupportedUserException(sprintf('Instances of "%s" are not supported.', $user::class));
+        }
+
+        $user->setPassword($newHashedPassword);
+        $this->getEntityManager()->persist($user);
+        $this->getEntityManager()->flush();
+    }
+
+    //    /**
+    //     * @return User[] Returns an array of User objects
+    //     */
+    //    public function findByExampleField($value): array
+    //    {
+    //        return $this->createQueryBuilder('u')
+    //            ->andWhere('u.exampleField = :val')
+    //            ->setParameter('val', $value)
+    //            ->orderBy('u.id', 'ASC')
+    //            ->setMaxResults(10)
+    //            ->getQuery()
+    //            ->getResult()
+    //        ;
+    //    }
+
+    //    public function findOneBySomeField($value): ?User
+    //    {
+    //        return $this->createQueryBuilder('u')
+    //            ->andWhere('u.exampleField = :val')
+    //            ->setParameter('val', $value)
+    //            ->getQuery()
+    //            ->getOneOrNullResult()
+    //        ;
+    //    }
+}