Switch view controller works if no other buttons are pressed - swift

Question

I have a view that has a user input server info and on submit switches to another view. It works fine if they just hit submit. I have another button that is used to clear the saved server info if they wanted to change it at some point. The issue is that it doesn't work if the resetServerInfo button is pressed prior to the submit button.
User flow that works: Enter server name/Server IP -> testConnection -> submitServer -> Switches view controller
When it fails: clearServerInformation -> Enter server name/Server IP -> testConnection connection -> Submit -> Doesn't do anything
The code:
class serverSelect: UIViewController {
#IBOutlet var serverNameField: UITextField!
#IBOutlet var serverIPField: UITextField!
#IBOutlet var successLabel: UILabel!
#IBOutlet var errorLabel: UILabel!
//Submit button - checks fields aren't empty, then saves info to core data
#IBAction func submitServer(sender: UIButton) {
errorLabel.hidden = true
if(!serverNameField.text!.isEmpty && !serverIPField.text!.isEmpty){
saveName(serverNameField.text!, ip: serverIPField.text!)
switchToViewController("userselect")
}
else {
errorLabel.text = "Fields must contain data"
errorLabel.hidden = false
}
}
//Calls deleteserverinformation on button click
#IBAction func resetServerInfo(sender: UIButton) {
let result = deleteServerInformation()
if(result){
successLabel.hidden = false
successLabel.text = "Server Information Reset"
}
else {
errorLabel.hidden = false
errorLabel.text = "Failed to delete. Try again."
}
}
//Removes all server information stored in core data
func deleteServerInformation() -> Bool {
let appDel = UIApplication.sharedApplication().delegate as! AppDelegate
let context = appDel.managedObjectContext
let coord = appDel.persistentStoreCoordinator
let fetchRequest = NSFetchRequest(entityName: "Server")
let deleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)
do {
try coord.executeRequest(deleteRequest, withContext: context)
return true
} catch let error as NSError {
debugPrint(error)
return false
}
}
//Clears old server information and commits new data to core data
func saveName(name: String, ip: String) {
let appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate
let managedContext = appDelegate.managedObjectContext
let fetchRequest = NSFetchRequest(entityName: "Server")
let entity = NSEntityDescription.entityForName("Server",
inManagedObjectContext:managedContext)
let server = NSManagedObject(entity: entity!,
insertIntoManagedObjectContext: managedContext)
server.setValue(name, forKey: "serverName")
server.setValue(ip, forKey: "serverIP")
do {
let results =
try managedContext.executeFetchRequest(fetchRequest)
let server = results as! [NSManagedObject]
if(server.count != 0){
deleteServerInformation()
}
do {
try managedContext.save()
} catch let error as NSError {
print("Could not save \(error), \(error.userInfo)")
}
} catch let error as NSError {
print("Could not fetch \(error), \(error.userInfo)")
}
}
//Call to switch view controller on successful submit
func switchToViewController(identifier: String) {
let viewController = self.storyboard!.instantiateViewControllerWithIdentifier(identifier)
self.navigationController?.pushViewController(viewController, animated: true)
}
}
I am new to swift so I imagine I am just missing some conceptual thing. I really don't have a good grasp on the core data stuff yet. From what I have read the view controller flow is all related to app delegate, so could it have to deal with how my deleteServerInfo is dealing with the app del AND my SaveServer also is dealing with it and when used one after another it causes issues? I'm sorry if I am way off, but it is the only thing I can think of that really changes between the two user interaction paths.
So basically the issue is the "submitServer" function runs fine and switches view over to userselect view controller when no other button is pushed in the view controller. However, if I press the button that triggers "resetServerInfo" first (which runs fine), when i click and run "submitServer" again it no longer switches view controllers.