Symfony 集合不保存数组但保存类名

Question

我有带有 CollectionType 的 symfony 形式。这是一个多步骤表单，当我在每一步后转储数据时，它会正确保存：

App\Entity\RezylientnaArchitektura {#654 ▼
  -id: null
  -BezpInf: Doctrine\Common\Collections\ArrayCollection {#655 ▼
    -elements: array:1 [▼
      0 => array:3 [▼
        "BezpInf_1" => "0"
        "BezpInf_2" => "1"
        "BezpInf_3" => "1"
      ]
    ]
  }
  -useruuid: "ea9ae76e-b688-11ed-be51-494b48375171"

形式：

$builder->add('useruuid', HiddenType::class, [
                    'data' => $this->getUserUUID(),
                ]);

                $builder->add('BezpInf', CollectionType::class, [
                    'entry_type' => AnswersTempType::class,
                    'allow_extra_fields' => true,
                    'entry_options' => [
                        'label' => false,                   
                    ],
                    'label' => false,
                    // 'by_reference' => false, 
                ]);

实体：

#[ORM\Entity(repositoryClass: RezylientnaArchitekturaRepository::class)]
class RezylientnaArchitektura
{
    #[ORM\Id]
    #[ORM\GeneratedValue]
    #[ORM\Column]
    private ?int $id = null;

    #[ORM\Column(length: 255)]
    private $BezpInf = null;

    #[ORM\Column(length: 255)]
    private ?string $useruuid = null;

    public function __construct()
    {
        $this->BezpInf = new ArrayCollection();
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getBezpInf(): Collection
    {
        return $this->BezpInf;
    }

    public function setBezpInf(string $BezpInf): self
    {
        $this->BezpInf = $BezpInf;

        return $this;
    }

    public function getUseruuid(): ?string
    {
        return $this->useruuid;
    }

    public function setUseruuid(string $useruuid): self
    {
        $this->useruuid = $useruuid;

        return $this;
    }
}

现在是棘手的部分。当我想以经典方式将其保存到数据库中时：

// ...

$em = $this->doctrine->getManager();
$em->persist($answer);
$em->flush();

// ...

它保存如下：

……

id	bezpinf	用户uuid
……	学说\通用\集合\数组集合@000000000000032f00000000000000000000000000000000000000000

当我添加到表单时

'by_reference' => false 它呈现在转储中 - Doctrine\Common\Collections\ArrayCollection@000000000000032f0000000000000000 并保存相同的内容。

我怎样才能正确地将我的 arraycollection 保存到数据库中？