Firebase_DB_codeScript.File_2018-0530

1_Ref&Query.py

var var1 = false #Boolean Type 


fun() {               
            var1 = false
            Database.database()
                    .reference()
                    .child("Requests Name")
                    .queryOrdered(byChild:"value1 name")
                    .queryEqual(toValue: "alue1 name")
                    .observe(.childAdded, with: { (snapshot) in
                             snapshot.ref.removeValue()
                             Database.database().reference().child("RideRequests").removeAllObservers()
                  })         
       }

2_ReloadData.py

    
  fun viewDidLoad() {
        super.viewDidLoad()
        Database.database().reference().child("Requests Name").observe(.childAdded, with: { (snapshot) in
            self.passengersRequests.append(snapshot) 
            self.tableView.reloadData()
        })
      
      

3_SnapShot.py

 fun(){ 
 
  Database.database().reference().child("Requests Name")
   .queryOrdered(byChild: "value1 name")
   .queryEqual(toValue: get Value for Value1)
   .observe(.childAdded, with: {(snapshot) in
            
            snapshot.ref.updateChildValues(["Value2-1":_, "Value2-2" :_])
            Database.database().reference().child("Request Name").removeAllObservers()
            
     }