Question

我遇到环回问题，我想尝试POST到另一个表。但它不能。这里是我要POST到Loopback Explorer的代码在http://localhost:1337/explorer/#!/Order/Order_create

    {
  "Code": "ASDASDASDE",
  "DP": 0,
  "Discount": 0,
  "DiscountNominal": 0,
  "TotalPrice": 0,
  "RequestDate": "string",
  "DeliveryDate": "2017-06-22T07:14:18.815Z",
  "TotalQty": 0,
  "Destination": "string",
  "Phone": "string",
  "Status": "string",
  "PaymentType": "string",
  "DealerCode": "D912839",
  "Active": true,
  "Deleted": true,
  "CreatedBy": "string",
  "CreatedDate": "2017-06-22T07:14:18.815Z",
  "CreateAgent": "string",
  "UpdatedBy": "string",
  "UpdatedDate": "2017-06-22T07:14:18.815Z",
  "UpdateAgent": "string",
  "KioskCode": "A1234",
"orderDetails":[{
  "Code": "ASD123",
  "IsRetur": true,
  "Price": 0,
  "IMEI": "string",
  "Status": "string",
  "OrderCode": "ASDASDASDE",
  "ProductCode": "SM-1923",
  "Active": true,
  "Deleted": true,
  "CreatedBy": "string",
  "CreatedDate": "2017-06-22T07:14:19.045Z",
  "CreateAgent": "string",
  "UpdatedBy": "string",
  "UpdatedDate": "2017-06-22T07:14:19.045Z",
  "UpdateAgent": "string"
}]
}

让我们说，我想POST到表Order，并在JSON的单引号中列出Order详细信息。已插入订单表，但订单明细表不能。

这里是我的Order.JSON

{
  "name": "Order",
  "plural": "Order",
  "base": "PersistedModel",
  "idInjection": false,
  "options": {
    "validateUpsert": true
  },
  "mixins": {
    "TimeStamp": {}
  },
  "properties": {
    "Code": {
      "type": "string",
      "id": true,
      "required": true
    ....
  },
  "validations": [],
  "relations": {
    "Dealer": {
      "type": "belongsTo",
      "model": "Dealer",
      "foreignKey": "DealerCode"
    },
    "orderDetails": {
      "type": "hasMany",
      "model": "OrderDetail",
      "foreignKey": "OrderCode"
    },
    "Kiosk": {
      "type": "belongsTo",
      "model": "Kiosk",
      "foreignKey": "KioskCode"
    }
  },
  "acls": [],
  "methods": {}
}

这里是我的orderDetail.JSON

{
  "name": "OrderDetail",
  "plural": "orderDetails",
  "base": "PersistedModel",
  "idInjection": false,
  "options": {
    "validateUpsert": true
  },
  "mixins": {
    "TimeStamp": {}
  },
  "properties": {
    "Code": {
      "type": "string",
      "id": true,
      "required": true
    }
.....
  },
  "validations": [],
  "relations": {
    "Order": {
      "type": "belongsTo",
      "model": "Order",
      "foreignKey": "OrderCode"
    },
    "Product": {
      "type": "belongsTo",
      "model": "Product",
      "foreignKey": "ProductCode"
    }
  },
  "acls": [],
  "methods": {}
}

订单有primaryKey：Code和orderDetails有一个外键：OrderCode引用Order：Code。什么解决方案？谢谢你的帮助

Answer 1

您可以按照以下步骤操作： 1.在order.js文件中定义一个远程方法：

Order.remoteMethod('saveNewOrder', {
    accepts: {arg: 'orderInstance', type: 'json'},
    http: {path:'/order-create', verb:'post'},
    returns: {arg: 'result', type: 'json'}
});

2。使用“orderInstance”参数定义saveNewOrder函数：

Order.saveNewOrder = function(orderInstance, cb){
    var order = new Order(orderInstance["order"])
    order.save().then(function(savedOrder,err){
    if(err)
        throw err
    else
        savedOrder.orderDetails.create(orderInstance["orderDetails"], function(err, createdOrderDetails){
            if(err)
                throw err
            else
                console.log("insertion done:",createdOrderDetails)
        })
    })
}

更改您的json以匹配此格式：

{
"orderInstance":{
    "order":{
        "Code": "ASDASDASDE",
        "DP": 0,
        "Discount": 0,
        ...
    },
    "orderDetails":[{
        "Code": "ASD123",
        "IsRetur": true,
        "Price": 0,
        ...
    }]
    }
}

将您的json发布到http://localhost:3000/api/orders/order-create

发布到两个表Loopback

1 个答案: