按键值对分组，同时使用 ramda 合并重复项

Question

我有一组表单错误，如下所示：

[
  {
    "path": "email",
    "message": "email must be at least 10 characters",
  },
  {
    "path": "email",
    "message": "email must be a valid email",
  },
  {
    "path": "password",
    "message": "password must be at least 8 characters",
  }
]

形状需要变换以符合表格的错误API。我想做的是使用 ramda 对其进行转换，使其最终像这样：

{
  email: ["email must be at least 10 characters", "email must be a valid email"],
  password: ["password must be at least 8 characters"]
}

用于实现此目的的 ramda 函数的最佳选择是什么？

Answer 1

使用R.pipe（或R.compose）创建一个按path 属性（通过R.prop）分组的函数，然后使用R.pluck inside R.map 获取每个组中的 message 属性：

const { pipe, groupBy, prop, map, pluck } = R

const fn = pipe(
  groupBy(prop('path')),
  map(pluck('message'))
)

const data = [{"path":"email","message":"email must be at least 10 characters"},{"path":"email","message":"email must be a valid email"},{"path":"password","message":"password must be at least 8 characters"}]

const result = fn(data)

console.log(result)

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js"></script>

按键值对分组，同时使用 ramda 合并重复项

Group by key value pairs whilst merging duplicates using ramda

javascript

ramda.js