Node + Json驗證密鑰嵌套數組

Question

我有示例json。在那個JSON中，我需要檢查以下事情。

1. 有效Json與否。
2. 名稱密鑰是必需的，沒有空（列表名稱和項目名稱）。
3. 項目數組的長度必須大於5

我重視我的代碼和它不工作。我覺得這種做法不好。任何人都可以請建議給我正確的道路。

var test = '{ "lists": [ { "items": [ { "name": "Curd0", "sequence": 3 }, { "name": "Curd1", "sequence": 2 }, { "name": "Curd2", "sequence": 1 }, { "name": "Curd3", "sequence": 4 }, { "name": "Curd4", "sequence": 10 }, { "name": "Curd5", "sequence": 9 }, { "name": "Curd6", "sequence": 8 }, { "name": "Curd7", "sequence": 7 }, { "name": "Curd8", "sequence": 6 }, { "name": "Curd9", "sequence": 5 } ], "name": "Curd Family", "status": "new", "created_by": 100036, "created_on": "2016-05-05T13:18:26.169Z" }, { "items": [ { "name": "Milk0", "sequence": 3 }, { "name": "Milk1", "sequence": 2 }, { "name": "Milk2", "sequence": 1 }, { "name": "Milk3", "sequence": 4 }, { "name": "Milk4", "sequence": 10 }, { "name": "Milk5", "sequence": 9 }, { "name": "Milk6", "sequence": 8 } ], "name": "Milk Family", "status": "new", "created_by": 100036, "created_on": "2016-05-05T13:18:44.504Z" }, { "items": [ { "name": "Water0", "sequence": 3 }, { "name": "Water1", "sequence": 2 }, { "name": "Water2", "sequence": 1 }, { "name": "Water3", "sequence": 4 }, { "name": "Water4", "sequence": 10 }, { "name": "Water5", "sequence": 9 }, { "name": "Water6", "sequence": 8 } ], "name": "Water Family", "status": "new", "created_by": 100036, "created_on": "2016-05-05T13:19:02.329Z" }, { "items": [ { "name": "Fruit0", "sequence": 3 }, { "name": "Fruit1", "sequence": 2 }, { "name": "Fruit2", "sequence": 1 }, { "name": "Fruit3", "sequence": 4 } ], "name": "Fruit Family", "status": "new", "created_by": 100036, "created_on": "2016-05-05T13:19:15.503Z" } ] }'; 


function Validate(data, callback) { 

    for (index in lists) { 
     if (!lists.index.hasOwnProperty('name')) { 
      callback("Name cannot be empty"); 
     } 

     var itemList = lists.index.items; 
     if (itemList.length < 5) { 
      callback("List need more than 5 lenth"); 
     } 
     for (i = 0; i < itemList.length; i++) { 
      if (!itemList[i].hasOwnProperty('name')) { 
       callback("Item Name cannot be empty"); 
      } 
     } 

    } 
    callback(null); 
} 


Validate(test, function (err) { 

    console.log(err); 
}); 

Answer 1

every可能是你需要的東西：

function containsNameInLists(element) { 
    return element.hasOwnProperty('name'); 
} 

function containsNameInItems(element) { 
    return element.items.every(containsKeyName); 
} 

function containsKeyName(element) { 
    return element.hasOwnProperty('name'); 
} 

function lengthSuperiorTo5(element) { 
    return element.length > 5; 
} 

function itemsArrayLength(){ 
    return element.items.every(lengthSuperiorTo5); 
} 

你可以測試你的字符串是否是一個有效的JSON字符串，只需使用JSON.parse

試着玩字符串來測試不同的功能。

Demo

編輯：我已經添加了其它附加功能：

EDIT DEMO

Answer 2

回調將調用多次，請添加一個 「回報」：

return callback(...); 

對於node.js的驗證JSON，有一個很好的圖書館：https://github.com/hapijs/joi