Question

我正在使用typeorm和MySQL。我的实体存储了不同类型的体育数据，例如足球，田径运动-> 100m，200m，400m。

在get调用中，我要按游戏类型（竞技或橄榄球）分组数据，并希望创建如下所示的嵌套JSON

JSON格式： {

  "footBall":[
       {"location":"use",gameType:"footbal", "goals":2,"result":"won"},
       {"location":"use",gameType:"footbal", "goals":1,"result":"draw"}
    ],

    "athletics":[
         {"location":"poland",gameType:"athletics", gameSubType:"100m", "rank":2,"result":"first place"},
         {"location":"ireland",gameType:"athletics", gameSubType:"200m", "rank":1,"result":"second place"}
      ]

}

我的实体类是这样的：

  @Entity('competition')
export class CompetitionEntity {
    @PrimaryGeneratedColumn()
    id:Number

    @Column({ type: 'timestamp', default: () => "CURRENT_TIMESTAMP"})
    date:Date

    @Column()
    location:String

    @Column()
    rank:Number

    @Column()
    eventType: string

    @Column()
    minutes: number

    @Column()
    seconds: number

    @Column()
    miliseconds: number

    @Column()
    gameType: string  //it can take values like athletics or football or baseball etc

    @Column()
    gameSubType: string //it can take value like 100m, 200m, relay etc
}

在使用中，我编写了这样的代码来获取比赛表中的所有数据

    const qb = await getRepository(CompetitionEntity)
        .createQueryBuilder('competition')


    const competitions = await qb.getMany();

获取结果表单数据库后，我想按gameType列对数据分组并作为嵌套json发送。

请为此指导我

谢谢大家

Answer 1

您可以以这种方式遍历结果集并分组结果

$cmd = 'sudo ssh-copy-id -i /home/pi/.ssh/id_rsa.pub user@remote_server';
$reply = shell_exec($cmd);
  echo  $reply;

Nestjs-从实体类创建自定义json响应

1 个答案: