JQGrid格式化程序不适合我

Question

我在jqgrid中使用以下代码。记录添加成功，编辑和删除选项也正常工作。但我无法验证文本框。我使用了formater选项但事件未被触发。

jQuery("#JQProdTypeGrid").jqGrid({
    url: '../handler/JQGridHandler.ashx',
    datatype: "json",
    width: gwdth,
    height: 'auto',
    colNames: ['Id', 'Date', 'Mod Date', 'Prod Name', 'Prod Code', 'Model No', 'Min Level', 'Desc', 'Status', 'Created By'],
    colModel: [{
        name: 'FLD_ID',
        index: 'FLD_ID',
        width: 20,
        stype: 'text'
    }, {
        name: 'FLD_DATE',
        index: 'FLD_DATE',
        width: 150,
        stype: 'text',
        sortable: true,
        editable: false
    }, {
        name: 'FLD_MOD_DATE',
        index: 'FLD_MOD_DATE',
        width: 60,
        hidden: true,
        editable: false
    }, {
        name: 'FLD_PROD_NAME',
        index: 'FLD_PROD_NAME',
        width: 150,
        editable: true,
        edittype: "text",
        editrules: {
            required: true
        }
    }, {
        name: 'FLD_PROD_CODE',
        index: 'FLD_PROD_CODE',
        width: 120,
        editable: true,
        edittype: "text",
        editrules: {
            required: true
        }
    }, {
        name: 'FLD_MODEL_NO',
        index: 'FLD_MODEL_NO',
        width: 120,
        editable: true,
        edittype: "text",
        editrules: {
            required: true
        }
    }, {
        name: 'FLD_MIN_STACK',
        index: 'FLD_MIN_STACK',
        width: 120,
        editable: true,
        edittype: "text",
        formatter: numFormat,
        editrules: {
            required: true
        }
    }, {
        name: 'FLD_DESC',
        index: 'FLD_DESC',
        width: 130,
        editable: true,
        edittype: "text",
        editrules: {
            required: true
        }
    }, {
        name: 'FLD_STATUS',
        index: 'FLD_STATUS',
        width: 100,
        height: 30,
        editable: true,
        edittype: "select",
        editrules: {
            required: true
        },
        editoptions: {
            value: {
                0: 'Active',
                1: 'Inactive'
            }
        }
    }, {
        name: 'CREATED_BY',
        index: 'FLD_CREATED_BY',
        width: 130,
        sortable: true,
        editable: false
    }, ],
    rowNum: 10,
    mtype: 'GET',
    loadonce: true,
    rowList: [10, 20, 30, 50, 100, 200, 500, 1000000],
    pager: '#JQProdTypeGridPager',
    sortname: 'FLD_ID',
    viewrecords: true,
    toppager: true,
    sortorder: 'desc',
    caption: "Product Type Master",
    emptyrecords: "Nothing to display",
    editurl: '../handler/JQGridHandler.ashx'
});

function numFormat(cellvalue, options, rowObject) {
    alert('enter here');
    return cellvalue.replace(".", ",");
}