利用treegrid的loadFilter显示列的子属性

tree的node：

{

    id：1，text：'aaa', attr:{m0:'xxx',m1:'yyy'}

}

子属性attr.m0,attr.m1显示为两列

$('#treeid').treegrid({

    columns:[[

           {field:"text",title:'单位名称'},

          *{field:"m0",title:'收费'},

           {field:"m1",title:'监控'}

    ]],

    loadFilter:function(data,parentId){

        for(var i=0;i

            var row = data[i];

            if(row.attr){

                var attr = row.attr;

                for(var j=0; j<=10; j++){

                    row["m"+j] = attr["m"+j];

                }

                row.attr = undefined;

            }

        }

        return data;

    }