Symfony4 Mapping issue - symfony

Question

I got an error like:
Undefined index: id
I know there are few questions like that already present on a Stack Overflow, but the solutions didn't work for me. Could you please review my entities in order of figuring out what exactly is causing this issue?
User
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
/**
* #ORM\Entity(repositoryClass="App\Repository\UserRepository")
* #ORM\HasLifecycleCallbacks()
* #UniqueEntity("email")
*/
class User
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
* #Assert\NotBlank()
*/
private $user_name;
/**
* #ORM\Column(type="string", length=100)
*/
private $first_name;
/**
* #ORM\Column(type="string", length=100)
*/
private $last_name;
/**
* #ORM\Column(type="string", length=255, unique=true)
* #Assert\NotBlank()
* #Assert\Email()
*/
private $email;
/**
* #ORM\Column(type="string", length=20, nullable=true)
*/
private $phone_number;
/**
* #ORM\Column(type="string", length=20, nullable=true)
*/
private $cell_phone_number;
/**
* #ORM\Column(type="boolean")
*/
private $enabled;
/**
* #ORM\Column(type="string", length=100)
* #Assert\NotBlank()
*/
private $timezone;
/**
* #ORM\Column(type="string", length=40)
*/
private $password;
/**
* #ORM\Column(type="datetime", nullable=true)
*/
private $last_login;
/**
* #var \DateTime $created
*
* #ORM\Column(type="datetime")
*/
private $created;
/**
* #var \DateTime $updated
*
* #ORM\Column(type="datetime", nullable=true)
*/
private $updated;
/**
* Many Users have Many Groups.
* #ORM\ManyToMany(targetEntity="Group")
* #ORM\JoinTable(name="user_group",
* joinColumns={#ORM\JoinColumn(name="user_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="group_id", referencedColumnName="id")}
* )
*/
private $group;
/**
* Many Users have Many Roles.
* #ORM\ManyToMany(targetEntity="Role", cascade={"persist"})
* #ORM\JoinTable(name="user_role",
* joinColumns={#ORM\JoinColumn(name="user_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="role_id", referencedColumnName="id")}
* )
*/
private $role;
public function __construct() {
$this->enabled = 0;
$this->group = new ArrayCollection();
$this->role = new ArrayCollection();
}
public function getId(): ?int
{
return $this->id;
}
public function getUsername(): ?string
{
return $this->user_name;
}
public function setUsername(string $user_name): self
{
$this->user_name = $user_name;
return $this;
}
public function getEmail(): ?string
{
return $this->email;
}
public function setEmail(?string $email): self
{
$this->email = $email;
return $this;
}
public function getEnabled(): ?bool
{
return $this->enabled;
}
public function setEnabled(bool $enabled): self
{
$this->enabled = $enabled;
return $this;
}
public function getTimezone(): ?string
{
return $this->timezone;
}
public function setTimezone(string $timezone): self
{
$this->timezone = $timezone;
return $this;
}
public function getPassword(): ?string
{
return $this->password;
}
public function setPassword(string $password): self
{
$this->password = $password;
return $this;
}
public function getLastLogin(): ?\DateTimeInterface
{
return $this->last_login;
}
public function setLastLogin(?\DateTimeInterface $last_login): self
{
$this->last_login = $last_login;
return $this;
}
public function getPhoneNumber(): ?string
{
return $this->phone_number;
}
public function setPhoneNumber(?string $phone_number): self
{
$this->phone_number = $phone_number;
return $this;
}
/**
* #Assert\IsTrue(message="The password cannot match your first name")
*/
public function isPasswordSafe()
{
return $this->user_name !== $this->password;
}
/**
* #ORM\PrePersist
*/
public function setCreated()
{
$this->created = new \DateTime();
}
public function getCreated()
{
return $this->created;
}
/**
* #ORM\PreUpdate
*/
public function setUpdated()
{
$this->updated = new \DateTime();
}
public function getUpdated()
{
return $this->updated;
}
public function getGroups()
{
return $this->group;
}
public function getRoles()
{
return $this->role;
}
public function addRoles(Role $role)
{
// updating inverse side
$role->addUser($this);
$this->role[] = $role;
}
public function getFirstName(): ?string
{
return $this->first_name;
}
public function setFirstName(string $first_name): self
{
$this->first_name = $first_name;
return $this;
}
public function getLastName(): ?string
{
return $this->last_name;
}
public function setLastName(string $last_name): self
{
$this->last_name = $last_name;
return $this;
}
public function getCellPhoneNumber(): ?string
{
return $this->cell_phone_number;
}
public function setCellPhoneNumber(?string $cell_phone_number): self
{
$this->cell_phone_number = $cell_phone_number;
return $this;
}
}
Group
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass="App\Repository\GroupRepository")
*/
class Group
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255)
*/
private $group_name;
public function getId(): ?int
{
return $this->id;
}
public function getGroupName(): ?string
{
return $this->group_name;
}
public function setGroupName(string $group_name): self
{
$this->group_name = $group_name;
return $this;
}
}
Role
namespace App\Entity;
use App\Entity\User;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* #ORM\Entity(repositoryClass="App\Repository\RoleRepository")
*/
class Role
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="string", length=255, unique=true)
*/
private $role_name;
/**
* Many Roles have Many Permissions.
* #ORM\ManyToMany(targetEntity="Permission")
* #ORM\JoinTable(name="role_permission",
* joinColumns={#ORM\JoinColumn(name="role_id", referencedColumnName="id")},
* inverseJoinColumns={#ORM\JoinColumn(name="permission_id", referencedColumnName="id")}
* )
*/
private $permission;
/**
* #ORM\Column(type="string", length=255, nullable=true)
*/
private $description;
private $user;
public function __construct() {
$this->user = new ArrayCollection();
$this->permission = new ArrayCollection();
}
public function getId(): ?int
{
return $this->id;
}
public function getRolename(): ?string
{
return $this->role_name;
}
public function setRolename(string $role_name): self
{
$this->role_name = $role_name;
return $this;
}
public function getDescription(): ?string
{
return $this->description;
}
public function setDescription(?string $description): self
{
$this->description = $description;
return $this;
}
public function addUser(User $user)
{
$this->user[] = $user;
}
}
Controller method
/**
* #Route("/user/{id}", methods={"GET","HEAD"})
* #SWG\Response(
* response=200,
* description="Returns a user or users",
* #SWG\Schema(
* type="array",
* #SWG\Items(ref=#Model(type=User::class, groups={"full"}))
* )
* )
* #SWG\Tag(name="user")
*/
public function get(string $id)
{
$repo = $this->userRepository;
$user = $repo->find($id);
return [
'user' => $user
];
}
Trace
/vendor/doctrine/orm/lib/Doctrine/ORM/UnitOfWork.php(2607):
Doctrine\ORM\Utility\IdentifierFlattener->flattenIdentifier(Object(Doctrine\ORM\Mapping\ClassMetadata),
Array)
/vendor/doctrine/orm/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php(146):
Doctrine\ORM\UnitOfWork->createEntity('App\Entity\User', Array,
Array)
/vendor/doctrine/orm/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php(68):
Doctrine\ORM\Internal\Hydration\SimpleObjectHydrator->hydrateRowData(Array,
Array)
/vendor/doctrine/orm/lib/Doctrine/ORM/Internal/Hydration/AbstractHydrator.php(152):
Doctrine\ORM\Internal\Hydration\SimpleObjectHydrator->hydrateAllData()
/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(741):
Doctrine\ORM\Internal\Hydration\AbstractHydrator->hydrateAll(Object(Doctrine\DBAL\Driver\PDOStatement),
Object(Doctrine\ORM\Query\ResultSetMapping), Array)
/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/Entity/BasicEntityPersister.php(751):
Doctrine\ORM\Persisters\Entity\BasicEntityPersister->load(Array, NULL)
/vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php(460):
Doctrine\ORM\Persisters\Entity\BasicEntityPersister->loadById(Array)
/vendor/doctrine/orm/lib/Doctrine/ORM/EntityRepository.php(154):
Doctrine\ORM\EntityManager->find('App\Entity\User', Array, NULL,
NULL) /src/Controller/UserController.php(61):
Doctrine\ORM\EntityRepository->find('1')
/vendor/symfony/http-kernel/HttpKernel.php(149):
App\Controller\UserController->get('1')
/vendor/symfony/http-kernel/HttpKernel.php(66):
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request),
1) /vendor/symfony/http-kernel/Kernel.php(188):
Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request),
1, true) /public/index.php(37):
Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request))
{main}
SOLVED!
The issue was caused by redefined QuoteStrategy::getColumnAlias() method
because "`" was added to query.

Answer 1

The issue was caused by redefined QuoteStrategy::getColumnAlias() method because "`" was added to query.