如何向JSONModel添加项

Question

我需要在按钮JSONModel处理程序中向press添加一个对象。JSONModel在应用描述符(manifest.json)中初始化，如下所示：

"models": {
  "invoice": {
    "type": "sap.ui.model.json.JSONModel",
    "uri": "model/Invoices.json"
  }
}

this.getOwnerComponent().getModel("invoice").data.push({/*...*/});

Answer 1

如果模型已经在您的清单中可用，并且属性已经存在，您可以添加如下所示的项：

单击事件时控制器中的：

var newItem = {
  "ProductName": "test add",
  "Quantity": 21,
  "ExtendedPrice": 87.2000,
  "ShipperName": "Fun Inc.",
  "ShippedDate": "2015-04-01T00:00:00",
  "Status": "A"
};
var oModel = this.getOwnerComponent().getModel("invoice");
oModel.setProperty("/Invoices", oModel.getProperty("/Invoices").concat(newItem));

在datasources 和 models**:**下的舱单中的

"dataSources": {
  "invoice": {
    "uri": "./model/Invoices.json",
  }
}
....
"models": {
  "invoice": {
    "type": "sap.ui.model.json.JSONModel",
    "dataSource": "invoice"
  }
}

Answer 2

var oModelInvoice = this.getOwnerComponent().getModel("invoice");
var obj = {
 "ProductName": "test add",
 "Quantity": 21,
 "ExtendedPrice": 87.2000,
 "ShipperName": "Fun Inc.",
 "WeightUnit" : "G",
 "ShippedDate": "2015-04-01T00:00:00",
 "Status": "A" 
}:

oModelInvoice.setProperty("/myObject", obj);

Answer 3

我找到了答案，我们应该使用push var obj= {}；

         obj.ProductName = "test add me";
          obj.Quantity = 120;
          obj.Status = "C";

         var oModel = this.getModel("invoice");
         var localdata = oModel.getData();
         localdata.Invoices.push(obj);
         oModel.setData(localdata);