Question

我在数组中有几个对象：

blob.getBinaryStream();

我想使用lodash得到以下结果：

"surcharges": [
    {
        "supplier": "XXXXX",
        "name": "over_pkg_0",
        "amount": 230
    },
    {
        "supplier": "XXXXX",
        "name": "over_pkg_1",
        "amount": 54
    },
    {
        "supplier": "YYYYY",
        "name": "over_pkg_0",
        "amount": 25
    },
    {
        "supplier": "YYYYY",
        "name": "over_pkg_1",
        "amount": 25
    }
];

我能够生成类似的东西，但是密钥正在合并，我无法将它们变成一个数组。 Probaly我应该在链中的某个地方使用"surcharges": [ { "XXXXX": [ { "name": "over_pkg_0", "amount": 230 }, { "name": "over_pkg_1", "amount": 54 } ], }, { "YYYYY": [ { "name": "over_pkg_0", "amount": 25 }, { "name": "over_pkg_1", "amount": 25 } ], } ];，但我无法弄清楚如何。

尝试使用：

_.concat

产地：

var finalsurcharges = _.chain(surcharges)
  .keyBy('supplier')
  .mapValues(v => _.omit(v, 'supplier'))
  .value();

Answer 1

使用_.groupBy()按键值对对象数组进行分组：

＆＃13;

const data = { surcharges: [{"supplier":"XXXXX","name":"over_pkg_0","amount":230},{"supplier":"XXXXX","name":"over_pkg_1","amount":54},{"supplier":"YYYYY","name":"over_pkg_0","amount":25},{"supplier":"YYYYY","name":"over_pkg_1","amount":25}]};

const finalsurcharges = _(data.surcharges)
    .groupBy('supplier')
    .mapValues((g) => g.map(o => _.omit(o, 'supplier')))
    .value();

console.log(finalsurcharges);

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>

＆＃13;

Lodash key具有与数组相同的属性

1 个答案: