Save data under same uid Firebase swift-CodePudding

I have added some data to the Firebase Realtime Database. It's in two parts, users and bookings. My problem is that when a user books a ride it gives a different uid, I would like it to be when a user books a ride it is under the same uid. Also, if the switch is on I would like to put it under the same child node, booking, but it comes into different nodes when saving. Any help would be highly appreciated.

   func Save(){

    let key = ref.childByAutoId().key
    
    let Booking = [
    
        
        "id": key as Any,
        "What Date": atALaterDate.text! as String,
        "What Time": hoursMinutesTextField.text! as String,
        "To What Time": ToWhatTime.text! as String,
        "Requests or Notes": SRtextfield.text! as String

    ]
    
    as [String : Any]
        
    ref.child(key!).setValue(Booking)


    }

this is where I would like it to be under one node, in conjunction with the one above it.

func Save2(){

    let key = ref.childByAutoId().key
    
        if Switch.isOn{
            
            let passengers = [
            "Passengers": Stepperlabel.text! as String,
            "passenger Age 1": AgeOfChild1.text! as String,
            "passenger Age 2": AgeOfChild2.text! as String,
            "passenger Age 3": AgeOfChild3.text! as String,
            "passenger Age 4": AgeOfChild4.text! as String,
            "passenger Age 5": AgeOfChild5.text! as String,
            "passenger Age 6": AgeOfChild6.text! as String,
      
                ]
            
            as [String : Any]
                
            ref.child(key!).setValue("booking")
                
                
                
        }else{
            print("Hello")
                return
        }
        
    }

CodePudding user response：

I believe the question is how to add additional data to a node.

The important bit is to keep a reference to the node you want to write to and use it with update to add/change existing data. If update is used on a node that doesn't exist, it will be added.

So here's an example. Suppose we have a chatting app and we want to write an initial String of Hello, World, and then add an additional string of What's up? to that same node

let messagesRef = self.ref.child("messages") //the top level node
let thisMsgRef = ref.childByAutoId() //create a child node
        
thisMsgRef.setValue( ["msg": "Hello, World"]) //create the node, write data
thisMsgRef.updateChildValues(["anotherMsg": "Whats up?"]) //add addl data

this results in the following structure

messages
   -Jy444f476u6...
      anotherMsg: "Whats up?"
      msg: "Hello, World"

If you want to re-use the node over and over, a reference to it could be stored as class var and then anytime you want to write to it, just reference the var...

class ViewController: NSViewController {  
    var myMsgRef: DatabaseReference!

then somewhere later in code

func writeInitialData() {
   let ref = self.ref.child("messages")
   self.myMsgRef = ref.childByAutoId()
   self.myMsgRef.setValue( ["msg": "Hello World"])

and then when you want to add additional data

func addAdditonalData() {
   self.myMsgRef.updateChildValues(["anotherMsg": "Whats up?"])