Kendo UI AutoComplete 数据源传输仅读取一次 [英] Kendo UI AutoComplete datasource transport reads only once

问题描述

我对 Kendo UI AutoComplete 组件非常着迷.我使用自己的函数通过 jQuery 访问数据，因此我必须将 AutoComplete dataSource.transport.read 设置为函数.代码是这样的.

I'm becoming crazy with Kendo UI AutoComplete component. I'm using my own functions to access data with jQuery, so I have to set the AutoComplete dataSource.transport.read as a function. The code is something like this.

minLengthAtocomplete = 3;

$('#autocomplete').kendoAutoComplete({
    minLength : 3,
    filter : "contains",
    dataValueField : "key",
    dataTextField : "value",
    dataSource : new kendo.data.DataSource({
        transport : {
            read : _OnTransportRead
        },
        schema : {
            /* object schema */
        }
    })
});

function _OnTransportRead(e) {
    var text = $.trim(e.data.filter.filters[0].value);

    if (text && text.length >= minLengthAtocomplete) {
        _GetUsers(
            text,
            function onSuccess(data) {
                var users = [];
                 /* sets users with info in data */
                e.success(users);
            },
            function onError(error) {
                /* stuff with error */
            }
        );
    }
}

function _GetUsers(userName, onSuccess, onError) {
    /* Ajax to get users from DB */
}

此代码运行良好，但 dataSource.transport.read 仅被调用一次.我使用文本 'michae' 进行第一次搜索，AutoComplete 组件按预期运行它的 dataSource.transport.read.然后，我再添加一个字母来搜索 'michael'，并且 dataSource.transport.read 不再被调用.好郁闷！

This code runs perfectly, but dataSource.transport.read is called only the once. I do a first search with the text 'michae' and AutoComplete component runs its dataSource.transport.read as expected. Then, I add a one more letter to search for 'michael', and dataSource.transport.read is never called again. Is so frustrating!

我尝试使用自动同步数据源属性，手动同步数据源，在自动完成数据绑定上设置新的数据源对象，但没有成功.

I tried using autoSync dataSource property, manual dataSource Sync, set new dataSource objects on AutoComplete dataBound, but no luck.

我做错了什么?我忘记了什么?

What am I doing wrong? What am I forgetting?

提前致谢.

推荐答案

您应该启用 serverFiltering 为了让数据源每次都发出请求.

You should enable serverFiltering in order for the data source to make requests every time.

$('#autocomplete').kendoAutoComplete({
    minLength : 3,
    filter : "contains",
    dataValueField : "key",
    dataTextField : "value",
    dataSource : new kendo.data.DataSource({,
        serverFiltering: true, 
        transport : {
            read : _OnTransportRead
        },
        schema : {
            /* object schema */
        }
    })
});

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