我有一个包含克隆按钮的主从页面。单击克隆按钮后,第一个列表项的数据被放入模型(detailModel-在component.js中声明),并打开一个新屏幕。该列表项的数据绑定到某些输入字段。当该输入字段中的任何一个被更新/擦除后,用户又导航而不保存它并再次出现在该页面上时,该更新/擦除的字段将保持空白。我希望这些数据进入较早出现的那个字段,但现在为空白。我模型中的数据也没有改变。下面是代码:
Component.js:
this.detailModel = new sap.ui.model.json.JSONModel();
this.detailModel.setDefaultBindingMode(sap.ui.model.BindingMode.OneWay);
sap.ui.getCore().setModel(this.detailModel, "detailModel");
Controller.js:
/*eslint-disable no-console, no-alert */
sap.ui.define([
"sap/ui/core/mvc/Controller",
"sap/ui/model/json/JSONModel",
"hmel/TravelandGuestHouse/controller/formatter",
"sap/m/MessageToast",
"sap/m/MessageBox",
"sap/m/Button",
"sap/m/Dialog",
"sap/m/Text",
'sap/m/Label',
'sap/m/TextArea'
], function (Controller, JSONModel, formatter, MessageToast, MessageBox, Button, Dialog, Text, Label, TextArea) {
"use strict";
return Controller.extend("hmel.TravelandGuestHouse.controller.CloneTravelRequest", {
onInit: function () {
this.router = sap.ui.core.UIComponent.getRouterFor(this);
//for cloning request
this.detailModel = sap.ui.getCore().getModel("detailModel");
this.getView().setModel(this.detailModel, "detailModel");
//for sending data to guest house screen
this.getView().byId("date").setDateValue(new Date());
this.router.attachRoutePatternMatched(this._handleRouteMatched, this);
},
_handleRouteMatched: function (evt) {
if (evt.getParameter("name") !== "CloneTravelRequest") {
return;
}
this.getView().invalidate();
var that = this;
//fetching Train Names
$.ajax({
url: "/Non_sap_create_requests/odata/TravelPrpTrainDetails",
method: "GET",
dataType: "json",
success: function (data) {
that.getView().getModel("Model").setProperty("/TravelPrpTrainDetails", data.value);
var tempModel = that.getView().getModel("detailModel");
var train = tempModel.getData().TrainName;
var trainKey = formatter.pickTrainKeyFromModel(data.value, train);
that.getView().byId("trainName").setSelectedKey(trainKey);
that.setLocations();
var nameofPass = tempModel.getData().NameOfPsngr;
if (nameofPass === "" || nameofPass === null) {
that.getView().byId("nameOfP").setValue(tempModel.getData().Requestee);
}
},
error: function (err) {
console.log(err.message);
}
});
var fdate = new Date();
this.getView().byId("date").setDateValue(new Date());
this.getView().byId("date").setMinDate(fdate);
}
});
});
答案 0 :(得分:0)
如果可以更改为oDataModel,则可以使用resetChanges方法。
如果您做不到,则必须手动进行一些操作。一旦弹出新窗口,将保存数据,用户将更改,如果取消,则将保存的数据恢复到jsonDataModel上。