如何将一对一关系映射到 YAML 中

Question

我正在尝试使用 YAML 在两个表之间创建一对一关系。我不确定他们应该如何沟通。

class Games
{
    private $id;

    private $title;

    private $description;

    private $img_link;

    private $website_link;

    private $pegi;

    private $release_date;
    private $requirements;
}
AppEntityGames:
  type: entity
  repositoryClass: AppRepositoryGamesRepository
  table: games
  id:
    id:
      type: integer
      generator:
        strategy: AUTO
  fields:
    title:
      type: string
      length: 255
      nullable: true
    description:
      type: text
      nullable: true
    img_link:
      type: text
      nullable: true
    website_link:
      type: text
      nullable: true
    pegi:
      type: integer
      nullable: true
    release_date:
      type: date
      nullable: true
  OneToOne:
    requirements:
      targetEntity: AppEntityRequirements
      joinColumn:
        name: requirements_fk
        referencedColumnName: id
class Requirements
{
    private $id;
    private $os_min;
    private $cpu_min;
    private $ram_min;
    private $hdd_min;
    private $gpu_min;
    private $directx_min;
    private $os_req;
    private $cpu_req;
    private $ram_req;
    private $hdd_req;
    private $gpu_req;
    private $directx_req;
}
AppEntityRequirements:
  type: entity
  repositoryClass: AppRepositoryRequirementsRepository
  table: requirements
  id:
    id:
      type: integer
      generator:
        strategy: AUTO
  fields:
    os_min:
      type: string
      length: 255
      nullable: true
    cpu_min:
      type: string
      length: 255
      nullable: true
    ram_min:
      type: integer
      nullable: true
    hdd_min:
      type: integer
      nullable: true
    gpu_min:
      type: string
      lenght: 255
      nullable: true
    directx_min:
      type: integer
      nullable: true
    os_req:
      type: string
      length: 255
      nullable: true
    cpu_req:
      type: string
      length: 255
      nullable: true
    ram_req:
      type: integer
      nullable: true
    hdd_req:
      type: integer
      nullable: true
    gpu_req:
      type: string
      lenght: 255
      nullable: true
    directx_req:
      type: integer
      nullable: true

我尝试像这样查询它，但它总是返回 null，即使它应该返回一个条目。

$temp = $this->getDoctrine()->getRepository(Games::class)->find($id);
$requirements = $temp->getRequirements();

我没有收到任何错误，所以，尝试调试它真的很难。根据文档，它看起来还可以。所以，不确定问题出在哪里。

Answer 1

如果class Games是你的实体，你应该在那里getRequirements()方法。如果实体为空，请尝试基于架构生成实体。

https://symfony.com/doc/current/doctrine/reverse_engineering.html

Answer 2

关键问题是 YAML 中的一对一！= 一对一。