把物件葉值展開成路徑陣列答案

來源格式與預期記錄

這是原創假設轉換例子。輸入限下列欄位的普通、無循環 JSON 形記錄，統一記錄格式及拒絕代碼由本例訂明。若換來源，先修改格式約定。

本例 payload 為無循環的 JSON 形資料，逐層訪問物件欄位，以路徑陣列列葉值。純量陣列整組當一個答案，含物件的陣列拒絕。空物件也明列 {}，不省略。路徑每段分開保存，不拼成文字。

可修改的假設轉換個案
個案	輸入記錄（JSON）	預期輸出（JSON）
整理巢狀答案值	{"payload":{"profile":{"name":"Ada","tags":["new","trial"]},"optIn":false}}	{"ok":true,"value":{"answers":[{"path":["profile","name"],"value":"Ada"},{"path":["profile","tags"],"value":["new","trial"]},{"path":["optIn"],"value":false}]}}
拒絕陣列內物件	{"payload":{"tags":[{"code":"new"}]}}	{"ok":false,"error":"LEAF_ARRAY"}
保留空物件	{"payload":{"profile":{}}}	{"ok":true,"value":{"answers":[{"path":["profile"],"value":{}}]}}

下載可編輯 CSV ↓

在本機執行轉換

把完整例子以 JavaScript 模組在 Node.js 執行，內含純轉換函數、三個輸入及寫明的預期輸出，對不上便由斷言停止。拒絕個案回傳 ok=false 及代碼，不回傳半份統一記錄。

完整函數及可執行個案

import assert from 'node:assert/strict';

function leafAnswers(i){
  const fail=error=>({ok:false,error});if(!i||!Object.hasOwn(i,'payload'))return fail('LEAF_PAYLOAD');
  const scalar=v=>v===null||typeof v==='string'||typeof v==='boolean'||(typeof v==='number'&&Number.isFinite(v));
  const answers=[];let error;
  const visit=(value,path)=>{
    if(scalar(value)){answers.push({path,value});return;}
    if(Array.isArray(value)){if(!value.every(scalar)){error='LEAF_ARRAY';return;}answers.push({path,value:[...value]});return;}
    if(value&&typeof value==='object'){
      const entries=Object.entries(value);if(!entries.length){answers.push({path,value:{}});return;}
      for(const [key,v]of entries)visit(v,[...path,key]);return;
    }
    error='LEAF_VALUE';
  };
  visit(i.payload,[]);return error?fail(error):{ok:true,value:{answers}};
}

// Original synthetic cases; expected outputs are literal records.
const cases = [
  {
    "label": "Capture nested answer leaves",
    "input": {
      "payload": {
        "profile": {
          "name": "Ada",
          "tags": [
            "new",
            "trial"
          ]
        },
        "optIn": false
      }
    },
    "expected": {
      "ok": true,
      "value": {
        "answers": [
          {
            "path": [
              "profile",
              "name"
            ],
            "value": "Ada"
          },
          {
            "path": [
              "profile",
              "tags"
            ],
            "value": [
              "new",
              "trial"
            ]
          },
          {
            "path": [
              "optIn"
            ],
            "value": false
          }
        ]
      }
    }
  },
  {
    "label": "Reject object-valued array",
    "input": {
      "payload": {
        "tags": [
          {
            "code": "new"
          }
        ]
      }
    },
    "expected": {
      "ok": false,
      "error": "LEAF_ARRAY"
    }
  },
  {
    "label": "Preserve empty object",
    "input": {
      "payload": {
        "profile": {}
      }
    },
    "expected": {
      "ok": true,
      "value": {
        "answers": [
          {
            "path": [
              "profile"
            ],
            "value": {}
          }
        ]
      }
    }
  }
];
for (const sample of cases) {
  const actual = leafAnswers(sample.input);
  assert.deepEqual(actual, sample.expected);
  console.log(sample.label, JSON.stringify(actual));
}

下載可執行例子 ↓

判清邊界個案

tags=["new","trial"] 是否拆成兩個索引答案？

查看參考答案

不拆，整組放在 ["profile","tags"] 的一個答案。optIn=false 是另一個明確答案；空 profile 則產生值為 {} 的答案。

來源格式與預期記錄

在本機執行轉換

判清邊界個案

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