Javascript 使用lodash groupBy以正确的方式构造数组

我有一个像这样的对象：

{
    data: [
        { id: "1", state: "accepted", estimate_date: "2019-12-17" },
        { id: "2", state: "rejected", estimate_date: "2019-12-17" },
        { id: "3", state: "open", estimate_date: "2019-12-17" },
        { id: "4", state: "open", estimate_date: "2019-12-18" },
        { id: "5", state: "rejected", estimate_date: "2019-12-18" },
        { id: "6", state: "accepted", estimate_date: "2019-12-18" },
    ]
}

const key = 'data';
const groupedEstimates = groupBy(estimateData[key], 'estimate_date');

[
  {
    date: "2019-12-17",
    items: [
      { id: "1", state: "accepted" },
      { id: "2", state: "rejected" },
      { id: "3", state: "open" },
    ]
  },
  {
    date: "2019-12-18",
    items: [
      { id: "4", state: "open" },
      { id: "5", state: "rejected" },
      { id: "6", state: "accepted" },
    ]
  }
]

当我在对象上使用lodash groupBy时，如下所示：

{
    data: [
        { id: "1", state: "accepted", estimate_date: "2019-12-17" },
        { id: "2", state: "rejected", estimate_date: "2019-12-17" },
        { id: "3", state: "open", estimate_date: "2019-12-17" },
        { id: "4", state: "open", estimate_date: "2019-12-18" },
        { id: "5", state: "rejected", estimate_date: "2019-12-18" },
        { id: "6", state: "accepted", estimate_date: "2019-12-18" },
    ]
}

const key = 'data';
const groupedEstimates = groupBy(estimateData[key], 'estimate_date');

[
  {
    date: "2019-12-17",
    items: [
      { id: "1", state: "accepted" },
      { id: "2", state: "rejected" },
      { id: "3", state: "open" },
    ]
  },
  {
    date: "2019-12-18",
    items: [
      { id: "4", state: "open" },
      { id: "5", state: "rejected" },
      { id: "6", state: "accepted" },
    ]
  }
]

它返回：

[
  [
    "2019-12-17"
  ],
  [
      [ { id: "1", state: "accepted" } ],
      [ { id: "2", state: "rejected" } ],
      [ { id: "3", state: "open" } ]
  ]
],

[
  [
    "2019-12-18"
  ],
  [
      [ { id: "4", state: "open" } ],
      [ { id: "5", state: "rejected" } ],
      [ { id: "6", state: "accepted" } ]
  ]
]

但现在我正试图实现这样的目标：

{
    data: [
        { id: "1", state: "accepted", estimate_date: "2019-12-17" },
        { id: "2", state: "rejected", estimate_date: "2019-12-17" },
        { id: "3", state: "open", estimate_date: "2019-12-17" },
        { id: "4", state: "open", estimate_date: "2019-12-18" },
        { id: "5", state: "rejected", estimate_date: "2019-12-18" },
        { id: "6", state: "accepted", estimate_date: "2019-12-18" },
    ]
}

const key = 'data';
const groupedEstimates = groupBy(estimateData[key], 'estimate_date');

[
  {
    date: "2019-12-17",
    items: [
      { id: "1", state: "accepted" },
      { id: "2", state: "rejected" },
      { id: "3", state: "open" },
    ]
  },
  {
    date: "2019-12-18",
    items: [
      { id: "4", state: "open" },
      { id: "5", state: "rejected" },
      { id: "6", state: "accepted" },
    ]
  }
]

---

除了我不知道如何使用lodash实现这一点。它不需要使用lodash，但我只是在一开始使用它，因为它似乎是解决我问题的简单方法。现在，我正在尝试实现一个更合理的数据结构，我希望了解如何实现它。

在通过

估计\u日期

属性进行分组后，使用

.map（）

迭代groups对象。通过获取

日期

属性的键（第二个参数），并映射

项

以忽略

估计日期

，生成组的对象：

const estimateData={“data”：[{“id”：“1”，“state”：“已接受”，“估计日期”：“2019-12-17”}，{“id”：“2”，“state”：“拒绝”，“估计日期”：“2019-12-17”}，{“id”：“3”，“state”：“open”，“估计日期”：“2019-12-17”{“id”：“4”，“state”：“open”，“估计日期”：“2019-12-18”}，{“id”：“5”，“state”：“已拒绝”，“估计日期”：“2019-12-18”{“id”：“6”，“state”：“接受”、“估计日期”：“2019-12-18”}
const groupedEstimates=\映射(
_.groupBy（estimateData.data，“估计日期”），
（项目、日期）=>({
日期，
items:items.map（o=>\uu.omit（o，'estimate\u date'））
})
)
console.log（groupedEstimates）

---

我不得不将其更改为

estimateData['data']

，或者在我的情况下，

estimateData[key]

，因为我已经声明了。您的其余答案完全符合我的要求。谢谢。这对解决方案都没有关系。这就是为什么我要更改-以减少混乱。欢迎：）