[英]How to join array objects with lodash
我有兩個帶有兩個不同數組對象的變量。 一個是collection(this.collection)對象,第二個是user(this.user)對象。
我想通過 UID 將這兩個對象合二為一。 這是collection object
:
{
"id":"d67de5QJ",
"admins":[
"494949393"
],
"color":"#029ae4",
"components":{
"forums":false,
"pages":true,
"photos":false,
"videos":false
},
"createdAt":"2018-02-09 14:38:59",
"description":"Angular is a TypeS",
"homepage":"pages",
"photoURL":"https://firebase..",
"status":"Public",
"title":"Angular 5",
"uid":"hlyAbEUfJhbxy",
"updatedAt":"2018-02-09 14:38:59"
}
這是user object
{
"bio": "<strong>PROFILE NEEDS EDITING",
"contactInfo": {
...
},
"createdAt": "2018-02-09 12:43:47",
,
"email": "email@gmail.com",
"avatar": "https://lh5.googleusercontent.com/-3LjYEmTIZlo/A...",
"roles": {
"admin": false,
"dealer": false,
"user": true
},
"status": "online",
"uid": "hlyAbEUfJhbxy",
"updatedAt": "2018-02-09 14:37:23",
}
如何使用 LoDash 或 vanilla JavaScript 實現這一點? 正如你所看到的,也有像updatedAt和createdAd其他公共屬性。
我試過這個,但我得到一個空對象
if(this.collection) {
this._auth.getUser(this.collection.uid).subscribe((user) => {
this.user = user;
const col = unionBy(this.user, this.collection, this.collection.uid)
console.log(col)
});
Object.assign() 可以解決這個問題。 在這里你可以找到詳細的解釋。
在這里看到小提琴
var col = {
"id":"d67de5QJ",
"admins":[
"494949393"
],
"color":"#029ae4",
"components":{
"forums":false,
"pages":true,
"photos":false,
"videos":false
},
"createdAt":"2018-02-09 14:38:59",
"description":"Angular is a TypeS",
"homepage":"pages",
"photoURL":"https://firebase..",
"status":"Public",
"title":"Angular 5",
"uid":"hlyAbEUfJhbxy",
"updatedAt":"2018-02-09 14:38:59"
}
var user = {
"bio": "<strong>PROFILE NEEDS EDITING",
"createdAt": "2018-02-09 12:43:47",
"email": "email@gmail.com",
"avatar": "https://lh5.googleusercontent.com/-3LjYEmTIZlo/A...",
"roles": {
"admin": false,
"dealer": false,
"user": true
},
"status": "online",
"uid": "hlyAbEUfJhbxy",
"updatedAt": "2018-02-09 14:37:23",
}
console.log(Object.assign(col,user))
您可以使用 loadash 合並: _.merge
。 與Object.assign
不同, _.merge
. _.merge
甚至可以處理嵌套對象。 在此處查找文檔和示例。
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