如何使用cli b4模型命令在Loopback 4中使用嵌套对象

Question

我正在处理要使用lb4进行建模的深层嵌套对象。我有机会获得有关此示例JSON代码的帮助吗？

{
"cardAcceptor": {
"address": {
"city": "Foster City",
"country": "RU",
"county": "San Mateo",
"state": "CA",
"zipCode": "94404"
},
"idCode": "ABCD1234ABCD123",
"name": "ABCD",
"terminalId": "ABCD1234"
},
"destinationCurrencyCode": "840",
"markUpRate": "1",
"retrievalReferenceNumber": "201010101031",
"sourceAmount": "100",
"sourceCurrencyCode": "643",
"systemsTraceAuditNumber": "350421"
}

Answer 1

您可以为嵌套对象创建单独的模型，

例如上述数据结构

您可以有类似的东西

export class CardAcceptor extends Address {

  @property({
    type: 'string',
    required: true,
  })
  address: string;

  @property({
    type: 'string',
    required: true,
  })
  idCode: string

  @property({
    type: 'string',
    required: true,
  })
  name: string;

  @property({
    type: 'string',
    required: true,
  })
  terminalId: string;

  constructor(data?: Partial<CardAcceptor>) {
    super(data);
  }
}

export class Address extends Entity {

  @property({
    type: 'string',
    required: true,
  })
  city: string;

  @property({
    type: 'string',
    required: true,
  })
  country: string

  @property({
    type: 'string',
    required: true,
  })
  county: string;

  @property({
    type: 'string',
    required: true,
  })
  state: string;


  @property({
    type: 'boolean',
    required: true,
  })
  zipCode: boolean;

  constructor(data?: Partial<Address>) {
    super(data);
  }
}

export class BaseModel extends CardAcceptor {


  @property.array(CardAcceptor)
  cardAcceptor: CardAcceptor;

  @property({
    type: 'string',
    required: true,
  })
  destinationCurrencyCode: string;

  @property({
    type: 'string',
    required: true,
  })
  markUpRate: string

  @property({
    type: 'string',
    required: true,
  })
  retrievalReferenceNumber: string;

  @property({
    type: 'string',
    required: true,
  })
  sourceAmount: string;


  @property({
    type: 'boolean',
    required: true,
  })
  sourceCurrencyCode: boolean;

  @property({
    type: 'array',
    itemType: 'string',
    default: [],
  })
  systemsTraceAuditNumber?: string[];


  constructor(data?: Partial<Game>) {
    super(data);
  }
}

希望这会有所帮助。谢谢