Normalizr：规范化深层嵌套项

Posted 2023-02-22

【中文标题】Normalizr：规范化深层嵌套项

【英文标题】：Normalizr: normalize deep nested items

【发布时间】：2021-05-22 18:56:54

【问题描述】：

我有一个这样的数据数组

[
  
    "id": "root_01",
    "parents": [
      
        "id": "parent_1",
        "childrens": [
          
            "id": "child_01",
            "name": "ABC",
            "group": "group_a"
          ,
          
            "id": "child_02",
            "name": "BBC",
            "group": "group_b"
          
        ]
      ,
      
        "id": "parent_2",
        "childrens": [
          
            "id": "child_03",
            "name": "CCD",
            "group": "group_a"
          ,
          
            "id": "child_04",
            "name": "EEF",
            "group": "group_c"
          
        ]
      
    ]
  ,
   // same as previous
]

我正在尝试删除所有父母数据并仅捕获并合并像这样的子项目：

[
  
    "id": "child_01",
    "name": "ABC",
    "group": "group_a"
  ,
  
    "id": "child_02",
    "name": "BBC",
    "group": "group_b"
  ,
  
    "id": "child_03",
    "name": "CCD",
    "group": "group_a"
  ,
  
    "id": "child_04",
    "name": "EEF",
    "group": "group_c"
  
]

但在阅读normalizr 文档后，我有点困惑，因为我找不到这种示例，所以有人可以建议我是否可以使用 normalizr 或任何更好的想法？

谢谢

【问题讨论】：

这能回答你的问题吗？ Find by key deep in a nested array

【参考方案1】：

Recusrion 是你需要的：

const arr = [  "id": "root_01", "parents": [  "id": "parent_1", "childrens": [  "id": "child_01", "name": "ABC", "group": "group_a" ,  "id": "child_02", "name": "BBC", "group": "group_b"  ] ,  "id": "parent_2", "childrens": [  "id": "child_03", "name": "CCD", "group": "group_a" ,  "id": "child_04", "name": "EEF", "group": "group_c"  ]  ] ];

const flatten = arr => arr.flatMap(o=>o.parents ? flatten(o.parents) : o.childrens ? flatten(o.childrens) : o);

console.log(flatten(arr));