非id字段的环回关系

Question

我想指定2个mssql表之间的关系.Paymentcategory和支付.paymentcategory.id加入payout.category列.

在payout.json模型中我指定为foreignKey:id,

"relations": {
    "paymentcategories": {
      "type": "hasOne",
      "model": "Paymentcategory",
      "foreignKey": "id"
 }

但是对于id字段,loopback默认为primaryKey

有没有办法在类别字段上指定连接.最好在common/models/payout.json文件中？

"relations": {
    "paymentcategories": {
      "type": "hasOne",
      "model": "Paymentcategory",
      "foreignKey": "id",
      "primaryKey": "category" ??????????????????
 }

现在我收到这个错误:

"error": {
"name": "Error",
"status": 400,
"message": "Key mismatch: Paymentpayout.id: undefined, Paymentcategory.id: 1",
"statusCode": 400,

Answer 1

您可以将外键定义为您想要的任何内容（在/common/models/your-model-name.json.

有关更多信息，请参阅我的示例：https://github.com/strongloop/loopback-example-relations-basic 。