Ramda具有insert function。但是在我的情况下,我不知道如何钻取对象并将新对象插入数组。另外,新对象应该位于数组的最后一个索引上,我们可以通过stuff["31"].length来获得它。我的尝试太可悲了,所以我决定不展示给他们:/

资料模型:

const stuff = {
  "31": [
    {
      "id": "11",
      "title": "ramda heeeelp"
    },
    {
      "id": "12",
      "title": "ramda 123"
    },
    //HERE I WANT TO INSERT A NEW OBJECT - {id: "13", title: "new title"}
  ],
  "33": [
    {
      "id": "3",
      "title": "..."
    }
  ],
  "4321": [
    {
      "id": "1",
      "title": "hello world"
    }
  ]
}

最佳答案

这是直接使用镜头,最后加上append

这是我的方法:



const addObjToGroup = (groupId, newObj, data) =>
  over (lensProp (groupId), append (newObj), data)

const stuff = {"31": [{"id": "11", "title": "ramda heeeelp"}, {"id": "12", "title": "ramda 123"}], "33": [{"id": "3", "title": "..."}], "4321": [{"id": "1", "title": "hello world"}]}

console .log (
  addObjToGroup ('31', {id: "13", title: "new title"}, stuff)
)

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js"></script>
<script>const {over, lensProp, append} = R                           </script>

10-05 20:41
查看更多