[英]How to get only one field from firestore query, i am getting all the fields
我可以 output 控制台中的所有字段,但我只想 output 1。我只想獲取 ID 字段,但我無法做到。 以下屏幕截圖顯示了我的代碼和 output。
this.afs.collection("accounts",ref=>ref
.where("email","==", email)) // email of currently logged in
.get()
.subscribe(data=>
data.forEach(element=>
//console.log(el.data())
console.log(element.data())
));
{id: '864b7TECyqUdd8Ql7f81saSgoOx2', lastName: '******',
address: '******', contactNo: '******', role:
'******', …}
address: "******"
contactNo: "******"
email: "******"
firstName: "******"
id: "864b7TECyqUdd8Ql7f81saSgoOx2"
lastName: "******"
role: "******"
[[Prototype]]: Object
Firestore 總是從服務器檢索完整的文檔,但您可以只顯示一個字段:
data.forEach(element=>
console.log(element.data().id)
));
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.