javascript - SAPUI5 本地范围对象作为格式化程序函数参数

Question

本地范围对象如何作为参数传递到格式化程序函数中。我只知道如何将值从绑定(bind)传递到格式化程序函数，但我需要将其他对象从本地范围传递到格式化程序函数。

            // request the order operations and bind them to the operation list
            oView.getModel().read(sPath + "/OperationSet", {
                success: function (oData, oResponse) {
                    if (oData && oData.results) {
                        var oOrder = oView.getBindingContext().getObject();
                        // I need sOrderType inside the external formatter function
                        var sOrderType = oOrder.OrderType;

                        operationList.bindAggregation("items", {
                            path: sPath + "/OperationSet",
                            template: new sap.m.StandardListItem({
                                title: "{Description}",
                                info: "{DurationNormal} {DurationNormalUnit}",
                                visible: {
                                    parts: [{path: 'Activity'}],
                                    formatter: de.example.util.Formatter.myFormatterFunction
                                }
                            }),
                            filters: []
                        });
                    }
                },
                error: function (oData) {
                    jQuery.sap.log.error("Could not read order operations");
                }
            });

Answer 1

您可以:

还绑定(bind)到包含与 oMyObject 中的信息相同的信息的其他值

创建一个闭包来捕获 oMyObject 并使其在格式化程序中可用。例如:

 formatter: ((function(oObject){
                //oObject is available inside this function
                return function (firstName, lastName, amount, currency) { // all parameters are strings 
                    if (firstName && lastName && oObject.someProperty == null) {
                        return "Dear " + firstName + " " + lastName + ". Your current balance is: " + amount + " " + currency;
                    } else {
                        return null;
                    }
                };
            })(oMyObject))

将信息存储在模型中的 oMyObject 中，并在格式化程序函数内访问该模型(尽管有点反模式)