bug report for telerik: grid columnMenu bug

by Alex Yu

HTML

<script src="http://cdn.kendostatic.com/2013.2.918/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.2.918/styles/kendo.default.min.css">
<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.2.918/styles/kendo.common.min.css">
<div style="width: 90%; height: 400px">
    <table id="grid" style="width: 100%; heigth: 100%"></table>
</div>

JavaScript

// instructions: open colum menu by clicking on down arrow
// result: Uncaught TypeError: Cannot call method 'replace' of undefined
// analysis: kendoColumnMenu's private var "template" should include a check for .hasOwnProperty in the for..in loop

Function.prototype.method = function (name, func) {
    "use strict";

    if (!this.prototype[name]) {
        this.prototype[name] = func;
        return this;
    } else {
        if (window.console) {
            console.log("method already defined: " + name);
        }
    }
};

Array.method('contains', function (object) {
    return $.inArray(object, this) !== -1;
});

var localData = [];

var someBool = true;
var someText = "sometext";
for (var i = 0, max_i = 100; i < max_i; i += 1) {
    if (i > 10) {
        someText = "aText";
    }

    if (i > 20) {
        someBool = false;
    }
    localData.push({
        Id: i,
        StatusText: someText,
        someBool: someBool
    });

    if (i % 3 === 0) {
        someBool = null;
        someText = null;
    } else {
        someBool = !someBool;
        someText = "sometext";
    }
}

var dataSource = new kendo.data.DataSource({
    data: localData,
    schema: {
        model: {
            fields: {
                Id: {
                    type: "number"
                },
                StatusText: {
                    type: "string"
                },
                someBool: {
                    type: "boolean"
                }
            }
        }
    }
});

var grid = $("#grid").kendoGrid({
    dataSource: dataSource,
    columnMenu: true,

    scrollable: true,
    height: 500,
    sortable: false,
    filterable: true,
    groupable: true,
    columns: [{
        field: "Id",
        title: "Id",
        filterable: false
    }, {
        field: "StatusText",
        title: "String value"
    }, {
        field: "someBool",
        title: "Boolean value"
    }]
}).data("kendoGrid");