在保留节点结构和数组的同时修剪JSON

时间:2012-12-28 21:27:45

标签: javascript arrays json

除了我在不同级别指定的一些属性,同时保留我的节点结构和数组结构外,我如何修剪JSON中的所有内容?

我查看了Underscore.js,看起来它没有那么多细粒度控制来保留节点结构。在下面的示例中,理想情况下,我希望能够将'_id', 'revisions[0]._id', 'revisions[0]._clientHasViewed'指定为保留这些属性的参数。

当然有一种简单的方法可以做到这一点。这就是我要找的东西:

ORIGINAL

{
    "_id": "50cbf5214ffaee8f0400000a",
    "_user": "50b1a966c12ef0c426000007",
    "expenses": [],
    "name": "Untitled Project",
    "payments": [],
    "revisions": [
        {
            "_id": "50cbfae65c9d160506000007",
            "clientHasViewed": false,
            "comments": [],
            "dateCreated": "2012-12-15T04:21:58.605Z"
        },
        {
            "_id": "50cbfae65c9d160506000008",
            "clientHasViewed": false,
            "comments": [],
            "dateCreated": "2012-12-15T04:21:58.605Z"
        }
    ],
    "status": "Revised",
    "thumbURL": "/50cd3107845d90ab28000007/thumb.jpg"
}

TRIMMED

{
    "_id": "50cbf5214ffaee8f0400000a",
    "revisions": [
        {
            "_id": "50cbfae65c9d160506000007",
            "clientHasViewed": false,
        },
    ],
}

1 个答案:

答案 0 :(得分:1)

ExtJs有一个copyTo函数(只有一个级别),但你可以用AngularJs创建类似的东西(angular有angular.copy,但是复制了整个对象):

var copyTo = function(dest, source, names){
    names = names.split(/[,;\s]/);

    angular.forEach(names, function(name){
        if(source.hasOwnProperty(name)){
             dest[name] = source[name];
         }
     });
     return dest;
};

E.g。

var trimmed = copyTo({}, original, '_id,');
    trimmed.revisions = [{}];
    trimmed = copyTo(trimmed.revisions[0], original.revisions[0], '_id,_clientHasViewed,');