使Grid可编辑

1.

{
    xtype: 'sms_PostRequirementGrid',
    border: false,
    plugins: [{
    ptype:'cellediting',
    clicksToEdit:1
}

2.

{
                header: 'PostDutyDescription',
                dataIndex: 'PostDutyDescription',
                emptyCellText: 'please fill the cell',
                editor: { xtype: 'textfield', allowBlank: false },
                flex: 1,
                renderer: function (value, metaData, record, colIndex, store, view) {
                    metaData.tdAttr = 'data-qtip="' + value + '"';
                    return value;
                }
 }

【上述还有待确定和总结】　：只用2行不行？