Question

我有以下lodash函数，用于将数据分组并返回：

[
    {
        "tranid": "100",
        "trandate": "2019-08-20T07:00:00.000Z",
        "account": "1",
        "currency": "1",
        "departement": "1",
        "location": "1",
        "list": [ "1", "2" ]
    },
    {
        "tranid": "200",
        "trandate": "2019-08-20T07:00:00.000Z",
        "account": "1",
        "currency": "1",
        "departement": "1",
        "location": "1",
        "list": [ "3", "1260" ]
    }
]

但是我真的很想让它返回：

[
    {
        "tranid": "100",
        "trandate": "8/20/2019",
        "account": "1",
        "currency": "1",
        "departement": "1",
        "location": "1",
        "list": [
            { "docnumber": "1" },
            { "docnumber": "2" }
        ]
    },
    {
        "tranid": "200",
        "trandate": "8/20/2019",
        "account": "1",
        "currency": "1",
        "departement": "1",
        "location": "1",
        "list": [
            { "docnumber": "3" },
            { "docnumber": "1260" }
        ]
    }
]

具体来说，我坚持的部分是如何制作：

"list":["1","2"]

变成

"list":[{"docnumber":"1"},{"docnumber":"2"}].

我知道组功能中的list: _.map(v, 'docnumber')需要更改，但还不太清楚如何更改。任何帮助都会很棒，谢谢。

function group(data) {
  var group = lo(data).chain(data).groupBy("tranid").map(function(v,i) {
    return {
      tranid: i,
      processed: _.get(_.find(v, 'processed'), 'processed'),
      trandate: _.get(_.find(v, 'trandate'), 'trandate'),
      account: _.get(_.find(v, 'account'), 'account'),
      currency: _.get(_.find(v, 'currency'), 'currency'),
      departement: _.get(_.find(v, 'departement'), 'departement'),
      location: _.get(_.find(v, 'location'), 'location'),
      list: _.map(v, 'docnumber')
    }
  }).value();

  return group;
}

Answer 1

像这样传递函数：

list: _.map(v, docnumber => ({ docnumber }));

这使用了ES6对象符号的简写形式。在普通JavaScript中，它将是：

list: v.map(docnumber => ({ docnumber }));

在ES5中，它将是：

list: v.map(function(n) {
  return {
    docnumber: n
  };
})

嵌套数组对象名称

1 个答案: