Swift Firebase设置时获取childByAutoId键 [英] Swift Firebase Get childByAutoId Key When Setting

问题描述

在设置Firebase值时，我想获取.childByAutoId()键值.是否可以这样做，或者我必须再次调用Firebase才能检索它?

I would like to obtain the .childByAutoId() key value while I am setting a firebase value. Is this possible to do or do I have to recall firebase again to retrieve it?

ref.child("users").child(user.id).child("alerts").childByAutoId().setValue(["autoID" : .childByAutoIdValue])

例如:我需要它生成的AutoId，但想在设置Firebase值时获取它.

For Example: I need the AutoId that it generates but would like to obtain it while setting a firebase value.

let keyValue = ref.childByAutoId.key //Completley wrong but to better understand what im trying to do

*更新::这就是我实现了我试图做的事情.

*Update: This is how i achieved what I was trying to do.

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])

用keyValue代替childByAutoId()

推荐答案

尝试使用

var ref: DatabaseReference!

ref = Database.database().reference()

let keyValue = self.ref.child(name_of_child).childByAutoId().key

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