Styjun

I am currently building an application using firebase, i have a follow button which followers the user or unfollows the user if already following.

After i cannot follow the user, when i click the button the data adds into firebase and then gets deleted again..

when i run the app again eveyything works perfectly find apart from the same bug when i am following again
this is my firebase database [FirebaseDatabase][1]

This is my code

 var follower = false

 override func viewDidLoad() 
 super.viewDidLoad()

 refreshControl.addTarget(self, action: #selector(refresh), for: UIControl.Event.valueChanged)

 self.tableView.addSubview(refreshControl)


 if guest == true 



 buttonRight.setImage(UIImage(named:"icons8-user-menu-male-filled-30"), for: .normal)

 firebaseControllerHandle.delegate = self
 firebaseControllerHandle.getUserInfo(uid:guestuid)
 firebaseControllerHandle.userDelegate = self
 firebaseControllerHandle.getUserProducts(userID: guestuid)

 NotificationCenter.default.addObserver(self, selector: #selector(self.filterRefresh(_:)), name: NSNotification.Name(rawValue: "followRefresh"), object: nil)



 else 


 if let user = Auth.auth().currentUser 
 if !user.isEmailVerified


 let alert = JDropDownAlert()
 alert.alertWith("Please Verify your Email Address")

 alert.didTapBlock = 

 let myVC = self.storyboard?.instantiateViewController(withIdentifier: "verify") as! VerifyEmailViewController

 let navController = UINavigationController(rootViewController: myVC)

 self.navigationController?.present(navController, animated: true, completion: nil)


 

 else 
 print ("Email verified. Signing in...")
 

 



 firebaseControllerHandle.delegate = self
 firebaseControllerHandle.userDelegate = self
 firebaseControllerHandle.getUserInfo(uid:(Auth.auth().currentUser?.uid)!)
 firebaseControllerHandle.getUserProducts(userID: (Auth.auth().currentUser?.uid)!)
 





 self.navigationController?.navigationBar.shadowImage = UIImage()


 



 @objc func filterRefresh(_ notification:Notification) 

 firebaseControllerHandle.delegate = self
 firebaseControllerHandle.getUserInfo(uid:guestuid)
 firebaseControllerHandle.userDelegate = self
 firebaseControllerHandle.getUserProducts(userID: guestuid)
 




 @objc func refresh() 
 // Code to refresh table view

 NotificationCenter.default.post(name: NSNotification.Name(rawValue: "refresh"), object: nil)
 // `default` is now a property, not a method call

 if guest == true 

 firebaseControllerHandle.delegate = self
 firebaseControllerHandle.getUserInfo(uid:guestuid)
 firebaseControllerHandle.userDelegate = self
 firebaseControllerHandle.getUserProducts(userID: guestuid)

 else 

 print("ont")

 
 refreshControl.endRefreshing()
 

 func loadFollowings(followings: [String]) 
 let myVC = self.storyboard?.instantiateViewController(withIdentifier: "Following") as! FollowingsViewController

 let navController = UINavigationController(rootViewController: myVC)

 self.navigationController?.present(navController, animated: true, completion: nil)
 

 func numberOfSections(in tableView: UITableView) -> Int 
 return 1
 



 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 

 return 2
 



 func userInfo(user: UserModel) 


 self.user = user


 if guest == true 

 self.guestUser = user

 follower = false

 for x in user.followers 



 if x == Auth.auth().currentUser?.uid 


 follower = true

 else 

 follower = false
 
 

 print("guest")
 self.tableView.reloadData()
 else 

 //self.user = user
 print("test")
 self.tableView.reloadData()
 
 


 var follower = false
 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 


 switch indexPath.row 
 case 0:
 let cell = tableView.dequeueReusableCell(withIdentifier: "profile", for: indexPath) as! profileCell




 if guest == true 


 cell.guestUserID = guestuid


 if follower == true 


 cell.button.setTitle("Following", for: .normal)


 cell.buttonChecked = true


 else 

 cell.button.setTitle("Follow", for: .normal)

 cell.buttonChecked = false


 

 cell.bio.text = guestUser.bio
 cell.sendMessageButton.setTitle("Send Message", for: .normal)



 else 


 let url = URL(string: user.profilePhoto)

 print(user.profilePhoto)


 cell.img.kf.setImage(with: url)
 cell.bio.text = user.bio
 cell.button.setTitle("Edit Profile", for: .normal)
 cell.sendMessageButton.setTitle("My Orders", for: .normal)
 cell.fullname.text = user.fullName
 

 cell.delegate = self
 return cell
 case 1 :
 let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! profileInfo


 return cell
 default:
 let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! profileCell


 return cell
 

 



 ```

 ```
this is my cell button action 

 @IBAction func followedit(_ sender: Any) 


 if buttonChecked == true 

 print("REMOVE FOLLOW")
 self.delegate?.myTableDelegate()

 let appearance = SCLAlertView.SCLAppearance(
 showCloseButton: false, showCircularIcon: false


 )

 // Initialize SCLAlertView using custom Appearance
 let alert = SCLAlertView(appearance: appearance)


 alert.addButton("Unfollow", backgroundColor: UIColor.black, textColor: UIColor.white) 

 let userRef = self.ref.child("Users").child(CurrentUserID.uid).child("Followings")


 let query = userRef.queryOrdered(byChild: "userid").queryEqual(toValue: self.guestUserID)

 let guestRemove = self.ref.child("Users").child(self.guestUserID).child("Followers")


 let guestRemoveQuery = guestRemove.queryOrdered(byChild: "userid").queryEqual(toValue: CurrentUserID.uid)



 guestRemoveQuery.observe(.childAdded, with: snapshot in

 if snapshot.exists() 


 snapshot.ref.removeValue()




 else 
 print("snapshot doesn't exist")
 
 )


 query.observe(.childAdded, with: snapshot in

 if snapshot.exists() 


 snapshot.ref.removeValue()


 else 
 print("snapshot doesn't exist")
 
 )

 

 alert.addButton("Cancel", backgroundColor: UIColor.black, textColor: UIColor.white) 

 alert.dismiss(animated: true, completion: nil)

 
 alert.showEdit("Unfollow (guestUserID)", subTitle: "Are you sure you want to unfollow (guestUserID)?")


 else 

 print("ADD FOLLOW")

 ref.child("Users").child(CurrentUserID.uid).child("Followings").childByAutoId().setValue(["userid" : guestUserID])

 ref.child("Users").child(guestUserID).child("Followers").childByAutoId().setValue(["userid" : CurrentUserID.uid])

 print(buttonChecked)

 NotificationCenter.default.post(name: NSNotification.Name(rawValue: "followRefresh"), object: nil)


 



 


 ```
 [1]: https://i.stack.imgur.com/5sMqa.png