我对Kendo UI相当新,并在此处获取了我的代码的基础知识:http://demos.telerik.com/kendo-ui/dropdownlist/cascadingdropdownlist
我有2个api调用,其中第一个没有参数,如果项目(Id,Name)则返回一个列表 第二个api调用接收一个Id,并返回一个秒的项目列表(也只是一个带有Id和Name的对象) 从此我希望有2个级联的剑道下拉菜单。 但是我的问题是第二个问题,网址的id始终为null或空,我无法弄清楚正确的语法是什么:
// First dropdown, all good
var controllers = $("#Controller").kendoDropDownList({
optionLabel: "Select controller...",
dataTextField: "Name",
dataValueField: "Id",
dataSource: {
serverFiltering: true,
transport: {
read: "/SharedData/GetControllers/"
}
}
}).data("kendoDropDownList");
// second dropdown, always hit the api method with the id being null or empty (depending on syntax for url)
var actions = $("#Action").kendoDropDownList({
autoBind: true,
cascadeFrom: "controllers",
cascadeFromField: "Id",
optionLabel: "Select Action...",
dataTextField: "Id",
dataValueField: "Name",
dataSource: {
serverFiltering: true,
transport: {
// HELP: need pass id to this route (which is id of selected controller)
read: "/SharedData/GetControllerActions/id=" + $("#Controller").data("kendoDropDownList").text()
}
}
}).data("kendoDropDownList");
答案 0 :(得分:1)
我认为问题是您的数据源只在初始化时设置了一次 - 并且此时下拉列表的值为null。我要做的是在第一个下拉列表中添加一个更改事件,如下所示:
var controllers = $("#Controller").kendoDropDownList({
optionLabel: "Select controller...",
dataTextField: "Name",
dataValueField: "Id",
dataSource: {
serverFiltering: true,
transport: {
read: "/SharedData/GetControllers/"
}
},
change: function(e) {
setSecondDS();
}
}).data("kendoDropDownList");
var setSecondDS = function() {
//initialize your new kendo datasource here
var dataSource = new kendo.data.DataSource({
//your stuff here
transport:
serverFiltering:
});
$("#Action").data("kendoDropDownList").setDataSource(dataSource);
}