EasyUi treeGrid返回数据有关问题

EasyUi treeGrid返回数据问题
EasyUi treeGrid返回数据有关问题
返回的数据是
[
    {
        "IsDisplay": "是",
        "children": [                
            {
                "IsDisplay": "是",
                "children": [],
                "CateId": 1005,
                "ParentId": 1001,
                "IsParent": false,
                "CateName": "DHA",
                "IncludeId": "1001,1005",
                "IsShow": true,
                "SortBy": 1105
            },
            {
                "IsDisplay": "是",
                "children": [],
                "CateId": 1006,
                "ParentId": 1001,
                "IsParent": false,
                "CateName": "宝宝零食",
                "IncludeId": "1001,1006",
                "IsShow": true,
                "SortBy": 1106
            },
            {
                "IsDisplay": "是",
                "children": [],
                "CateId": 1007,
                "ParentId": 1001,
                "IsParent": false,
                "CateName": "钙铁锌/维生素",
                "IncludeId": "1001,1007",
                "IsShow": true,
                "SortBy": 1107
            },
            {
                "IsDisplay": "是",
                "children": [],
                "CateId": 1008,
                "ParentId": 1001,
                "IsParent": false,
                "CateName": "清火/开胃",
                "IncludeId": "1001,1008",
                "IsShow": true,
                "SortBy": 1108
            },
            {
                "IsDisplay": "是",
                "children": [],
                "CateId": 1009,
                "ParentId": 1001,
                "IsParent": false,
                "CateName": "面条/粥",
                "IncludeId": "1001,1009",
                "IsShow": true,
                "SortBy": 1109
            }
        ],
        "CateId": 1001,
        "ParentId": 0,
        "IsParent": true,
        "CateName": "营养辅食",
        "IncludeId": "1001",
        "IsShow": true,
        "SortBy": 1101
    }
]

  "IsShow"的值是true或者false ,怎么在treeGrid中显示成"是"或者"否",求大神解答
------解决思路----------------------
不是有formatter配置,datagrid的配置也适合treegrid

columns:[[{field:'IsShow',formatter:function(v){return v?'是':'否'}