[英]Swift Firebase Get childByAutoId Key When Setting
I would like to obtain the .childByAutoId()
key value while I am setting a firebase value. 我想在设置
.childByAutoId()
值时获取.childByAutoId()
键值。 Is this possible to do or do I have to recall firebase again to retrieve it? 是否可以这样做,或者我必须再次调用Firebase才能检索它?
ref.child("users").child(user.id).child("alerts").childByAutoId().setValue(["autoID" : .childByAutoIdValue])
For Example: I need the AutoId that it generates but would like to obtain it while setting a firebase value. 例如:我需要它生成的AutoId,但想在设置Firebase值时获取它。
let keyValue = ref.childByAutoId.key //Completley wrong but to better understand what im trying to do
*Update: This is how i achieved what I was trying to do. *更新:这就是我实现自己想做的方式的方式。
let keyValue = ref.child("users").child(user.id).child("alerts").childByAutoId().key
ref.child("users").child(user.id).child("alerts").child(keyValue).setValue(["autoID" : keyValue])
used keyValue
in replacement of childByAutoId()
用
keyValue
代替childByAutoId()
Try with 试试看
var ref: DatabaseReference!
ref = Database.database().reference()
let keyValue = self.ref.child(name_of_child).childByAutoId().key
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