从Kendo下拉列表中删除下划线

时间:2013-10-28 10:27:13

标签: javascript kendo-ui underscore.js kendo-dropdown

这个看起来很简单,只是不确定在哪里处理它。我正在通过REST JSON从SQL数据库中检索列名值。下拉列表中的值具有预期的下划线(Customer_Name)。我想显示一个没有下划线的“友好”(客户名称)版本,但仍然将我的值(Customer_Name)发送到我的REST服务。我看了看Underscore.js,但不知道从哪里开始,这可能比我想象的要简单。谢谢!

1 个答案:

答案 0 :(得分:1)

我不知道您是如何从休息服务中接收数据的。

但基本上,您只需映射REST服务收到的数据,根据需要更改值。

以下是一些示例代码:

// Call to the REST service and when done call the callback function loadDDL
$.ajax({
  type: "POST",
  url: "my-rest-service"
}).done(loadDDL);


// Callback function when returning from the REST service
// -> load data in the DDL (here, it has the id "my-ddl")
function loadDDL(data) { 
  $("#my-ddl").kendoDropDownList({
    dataTextField: "text",
    dataValueField: "value",
    dataSource: _.map(data, makeFriendlyName),
    index: 0
  }); 
}


// Function used by the _.map function in order 
// change dynamically the labels in the DDL
function makeFriendlyName(obj) {
  return { 
    text: obj.text, 
    value: obj.value.replace("_", " ") 
  };
}

编辑:

基于OP的小提琴,下面是使用模板而不是直接更改数据源的示例代码:

function loadDDL(data) { 
  $("#my-ddl").kendoDropDownList({
    autoBind: true,
    dataTextField: "DOMAINQUERY",
    dataValueField: "COLUMN_NAME",
    dataSource: dataSourceSearch1,
    template: "${DOMAINQUERY.replace(/_/g, ' ')}"
  }); 
}

编辑2:

为了直接转换数据源,我再次通过动态更改数据源的change事件中的文本来重新映射数据源:

var dataSourceSearch1 = new kendo.data.DataSource({
    transport: {
        read: {
            url: "http://demos.kendoui.com/service/Customers",
            dataType: "jsonp"
        }
    },
    change: changeDS // <-- Here add a change event : each time the datasource changes, this event is being raised
});


// This is the function call when the DS changes
// the data stuff is in the `items` property which is the object send via the REST service
function changeDS(datasource) {
    _.map(datasource.items, makeFriendlyName);
}


// Function to apply to each data -> here I just replace all spaces in the 
// `ContactName` field by `_`
function makeFriendlyName(data) {
    data.ContactName = data.ContactName.replace(/ /g, '_');
    return data;
}


// Fill the DDL with the previous datasource
var cboSearchField1 = $("#cboSearchField1").kendoDropDownList({
    dataTextField: "ContactName",
    dataValueField: "ContactName",
    filter: "contains",
    autobind: true,
    select: cboSearchField1_Selected,
    change: cboSearchField1_onChange,
    dataSource: dataSourceSearch1
}).data("kendoDropDownList");