What could be causing the error Warning: spl_object_hash() expects parameter 1 to be object, null given when editing an entity?

Question

symfony

Hi all! Please tell me what could be causing the ContextErrorException: Warning: spl_object_hash() expects parameter 1 to be object, null given in /home/dsazz/sites/postformula.ua/www/vendor/doctrine/orm/lib/Doctrine/ORM /UnitOfWork.php line 1588 – when updating the data of an already existing User entity. Even if the user does not change anything in the form, this Exception is still thrown out.
Here is the controller source code:

public function editAction()
    {
        $request = $this->getRequest();
        $container = $this->container;

        $userManager = $this->get('fos_user.user_manager');
        $dispatcher = $container->get('event_dispatcher');
        $em = $this->getDoctrine()->getManager();

        $user = $em->getRepository('PostformulaMainBundle:User')
            ->find($request->request->get('id_user'));

        if (!$user) {
            throw $this->createNotFoundException('Такого юзера нет.');
        }

        $form = $this->createForm(new UserType(), $user);

        $form->bind($request);
        if ($form->isValid()) {
            $em->persist($user);
            $em->flush();

            return new JsonResponse(array('status' => 'ok'));
        } else {
            return new JsonResponse(array('status' => 'fail', 'errors' => $this->getErrorMessages($form)));
        }
}

Doctrine configuration for the User entity:

Postformula\MainBundle\Entity\User:
  type: entity
  repositoryClass: Postformula\MainBundle\Entity\Repository\UserRepository
  table: fos_user
  id:
    id:
        type: integer
        generator: { strategy: AUTO }
  fields:
    phone:
      type: string
      length: 20
      nullable: true
    confirm_string:
      type: string
      length: 64
      nullable: true
    sms_code:
      type: string
      length: 4
      nullable: true
    confirm_sms:
      type: boolean
      length: 1
      nullable: true
  oneToOne:
    avatar:
      targetEntity: Postformula\MainBundle\Entity\Image
      #cascade: ["persist", "remove"]
      cascade: ["persist", "remove", "remove"]
      #orphanRemoval: true
      joinColumn:
        name: avatar_id
        referencedColumnName: id
        onDelete: SET NULL
  oneToMany:
    createdFiles:
      targetEntity: Postformula\MainBundle\Entity\Image
      mappedBy: creator
      cascade: ["persist", "remove", "remove"]
      #cascade: ["persist", "remove"]
    passportFiles:
      targetEntity: Postformula\MainBundle\Entity\Image
      mappedBy: userPassport
      cascade: ["persist", "remove", "remove"]
      #cascade: ["persist", "remove"]
    createdProjects:
      targetEntity: Postformula\MainBundle\Entity\Project
      mappedBy: responsible
      cascade: ["persist", "remove", "remove"]
      #cascade: ["persist", "remove"]
    permissions:
      targetEntity: Postformula\MainBundle\Entity\ProjectPermission
      mappedBy: user
      cascade: ["persist", "remove", "remove"]
      #cascade: ["persist", "remove"]
  manyToMany:
    projects:
      targetEntity: Postformula\MainBundle\Entity\Project
      cascade: ["persist", "merge", "remove"]
      inversedBy: users
      joinTable:
        name: users_projects
        joinColumns:
          user_id:
            referencedColumnName: id
            onDelete: CASCADE
        inverseJoinColumns:
          project_id:
            referencedColumnName: id
            onDelete: CASCADE
    groups:
        targetEntity: Group
        cascade: ["persist", "remove", "remove"]
        joinTable:
            name: fos_user_group
            joinColumns:
                user_id:
                    referencedColumnName: id
                    onDelete: CASCADE
            inverseJoinColumns:
                group_id:
                    referencedColumnName: id
                    onDelete: CASCADE

The source code of the UserType form itself:

<?php

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Postformula\MainBundle\Entity\User;
use Postformula\MainBundle\Entity\Image;
use Postformula\MainBundle\Form\DataTransformer\StringToArrayTransformer;
use Postformula\MainBundle\Form\DataTransformer\EntityToIdTransformer;
use Postformula\MainBundle\Form\Project\ProjectChoiceType;

use Doctrine\ORM\EntityRepository;

class UserType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $transformer = new StringToArrayTransformer();

        $builder->add('username', null, array(
            'label'              => 'Username', 
            'translation_domain' => 'FOSUserBundle'
        ));

        $builder->add('email', 'email', array(
            'label'              => 'Email', 
            'translation_domain' => 'FOSUserBundle'
        ));

        $builder->add('phone', 'text', array(
            'label'              => 'Phone'
        ));
        $builder->add('avatar', new ImageType());

        $builder->add('passportFiles', 'collection', array(
            'type'         => new ImageType(),
            'allow_add'    => true,
            'allow_delete' => true,
            'by_reference' => false,
            'label'        => 'Passport Files',
        ));

        $builder->add('groups', 'collection', array(
            'type'    => 'entity',
            'options' => array(
                'class'    => 'PostformulaMainBundle:Group',
                'property' => 'label',
                'multiple' => false,
                'expanded' => true,
                'query_builder' => function(EntityRepository $er) {
                return $er->createQueryBuilder('g')
                    ->where("g.name != :group_name")
                    ->setParameter('group_name', "GROUP_SUPER_ADMIN")
                    ->orderBy("g.id", "DESC");
                },
                'label' => false,
            ),
            'allow_add'      => true,
            'prototype_name' => '__group__'
        ));

        $builder->add('projects', 'collection', array(
            'type'    => 'entity',
            'options' => array(
                'class'    => 'PostformulaMainBundle:Project',
                'property' => 'title',
                'label'    => 'Проект: '
            ),
            'allow_add'      => true,
            'prototype_name' => '__project__',
        ));

        $builder->add('permissions', 'collection', array(
            'type' => new ProjectPermissionType(), 
            'allow_add'      => true,
            'allow_delete' => true,
            'label' => false,
            'required' => false,
        ));

        // Crop start coordinate
        $builder->add('x1', 'hidden', array(
            "mapped" => false,
            'data'   => "100"
        ));
        $builder->add('y1', 'hidden', array(
            "mapped" => false,
            'data'   => "150"
        ));
        //-----------------------------------        

        // Crop size
        $builder->add('x2', 'hidden', array(
            "mapped" => false,
            'data'   => "200"
        ));
        $builder->add('y2', 'hidden', array(
            "mapped" => false,
            'data'   => "200"
        ));
        //-----------------------------------        
    }

    public function getDefaultOptions(array $options)
    {
        return array(
            'data_class'      => 'Postformula\MainBundle\Entity\User',
            'csrf_protection' => true,
            'csrf_field_name' => '_token',
            // уникальный ключ для генерации секретного токена
            'intention'       => 'task_azzOff',
        );
    }
    
    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(
            array(
                'data_class'         => 'Postformula\MainBundle\Entity\User',
                'cascade_validation' => true,
                'roles'              => null,
                'validation_groups'  => array('CreateUser'),
           )
        );
    }

    public function getName()
    {
        return 'user';
    }
}

Answer 1

it is logical to assume that the entity in $user is not an object, but in general it is better to look at the entire stack of errors.