Question

我的jsbin链接在这里： http://jsbin.com/siyux/1/edit

以下是我的代码：

var dest = {
   owner: '53a96efe07b7570013bdcb8b',
 schedule: 'Thu Jul 03 2014 20:00:00 GMT+0530 (India Standard Time)',
 _id: '53b55f52dafac9f40984fe30',
 __v: 0,
 a: [],
  result:{
   markCard: [] 
  },
 parent: {},
 b: [],
 c: [],
 d: { teamRef: '53ad727d62290bc8178695fa', squad: [] },
 e: { teamRef: '53ad726e62290bc8178695f9', squad: [] } 
};

var src = {
  markCard:
   [ { i: 1,
       bt: [Object],
       bl: [Object],
       ts: [Object],
       sc: [Object] },
     { i: 2,
       bt: [Object],
       bl: [Object],
       ts: [Object],
       sc: [Object] } ],
  srcA:
   { __v: 0,
     _id: '53ad726e62290bc8178695f9',
     name: 'T-H',
     owner: '53a96efe07b7570013bdcb8b' },
  srcB: { __v: 0,
     _id: '53ad726e62290bc8178695f0',
     name: 'T-M',
     owner: '53a96efe07b7570013bdcb8b' },
  srcC: false,
  srcD: 'Bt'
};

//console.log(_.merge(dest, src));
dest.result=_.extend(dest.result, src);
console.log(dest);

预期输出：

dest = {
       owner: '53a96efe07b7570013bdcb8b',
     schedule: 'Thu Jul 03 2014 20:00:00 GMT+0530 (India Standard Time)',
     _id: '53b55f52dafac9f40984fe30',
     __v: 0,
     a: [],
      result:{
      markCard:
       [ { i: 1,
           bt: [Object],
           bl: [Object],
           ts: [Object],
           sc: [Object] },
         { i: 2,
           bt: [Object],
           bl: [Object],
           ts: [Object],
           sc: [Object] } ],
      srcA:
       { __v: 0,
         _id: '53ad726e62290bc8178695f9',
         name: 'T-H',
         owner: '53a96efe07b7570013bdcb8b' },
      srcB: { __v: 0,
         _id: '53ad726e62290bc8178695f0',
         name: 'T-M',
         owner: '53a96efe07b7570013bdcb8b' },
      srcC: false,
      srcD: 'Bt'
    },
     parent: {},
     b: [],
     c: [],
     d: { teamRef: '53ad727d62290bc8178695fa', squad: [] },
     e: { teamRef: '53ad726e62290bc8178695f9', squad: [] } 
    };

实际输出

dest = {
       owner: '53a96efe07b7570013bdcb8b',
     schedule: 'Thu Jul 03 2014 20:00:00 GMT+0530 (India Standard Time)',
     _id: '53b55f52dafac9f40984fe30',
     __v: 0,
     a: [],
      result:{
      markCard:
       [ { i: 1,
           bt: [Object],
           bl: [Object],
           ts: [Object],
           sc: [Object] },
         { i: 2,
           bt: [Object],
           bl: [Object],
           ts: [Object],
           sc: [Object] } ],
      srcA:
       {  },
      srcB: { }
      },
     parent: {},
     b: [],
     c: [],
     d: { teamRef: '53ad727d62290bc8178695fa', squad: [] },
     e: { teamRef: '53ad726e62290bc8178695f9', squad: [] } 
    };

由于扩展，我无法将srcA和srcB的值扩展到目标。我想只有结构被复制了。有人请告诉我错误的地方。感谢。

Answer 1

如果您使用lodash使用Mongoose模型，那么您需要先分配数据然后再分配它。

例如：

var data = _.merge(dest.toJSON(), src);  
_.extend(dest, data);  
dest.save();

这可能是因为Mongoose模型将附加的非枚举/配置附加到导致扩展/合并期间出现问题的对象。

Lodash _.extend不扩展嵌套对象

1 个答案: