Write data to Firebase not working - Cannot convert value of type 'user' to expected argument type 'AnyObject?' - swift

Question

I am trying to save my registered data to Firebase but get a "Cannot convert value of type 'user' to expected argument type 'AnyObject?'" error. I tried many things but I can't seem to figure it out...can someone help me please? how do it save it?
import UIKit
import Firebase
import FirebaseDatabaseUI
class EventViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
//outlets for text & image
#IBOutlet weak var photoImageView: UIImageView!
#IBOutlet weak var eventName: UITextField!
#IBOutlet weak var eventDate: UITextField!
#IBOutlet weak var eventDes: UITextView!
//Database connection
let rootref = FIRDatabase().reference()
var imagePicker: UIImagePickerController = UIImagePickerController()
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
#IBAction func submitEvent(sender: AnyObject) {
let name = eventName.text
let date = eventDate.text
let text = eventDes.text
var data: NSData = NSData()
if let image = photoImageView.image {
data = UIImageJPEGRepresentation(image,0.1)!
}
let base64String = data.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.Encoding64CharacterLineLength)
if let unwrappedName = name , unwrappedDate = date, unwrappedText = text{
let user: NSDictionary = ["name":unwrappedName, "date":unwrappedDate, "text":unwrappedText, "photoBase64":base64String]
}
//Add firebase child node
let event = FIRDatabase().reference().child(name!)
// Write data to Firebase
event.setValue(user.init())
navigationController?.popViewControllerAnimated(true)
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
view.endEditing(true)
super.touchesBegan(touches, withEvent: event)
}
//UIImagePickerControllerDelegate methods
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
imagePicker.dismissViewControllerAnimated(true, completion: nil)
photoImageView.image = info[UIImagePickerControllerOriginalImage] as? UIImage
}
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
dismissViewControllerAnimated(true, completion: nil)
}
#IBAction func addPicture(sender: AnyObject) {
if(UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)) {
imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = .Camera
presentViewController(imagePicker, animated: true, completion: nil)
} else {
imagePicker.allowsEditing = false
imagePicker.sourceType = .PhotoLibrary
imagePicker.delegate = self
presentViewController(imagePicker, animated: true, completion:nil)
}
}
}

Answer 1

You have created an instance for your base database rootRef and again you are creating one more reference which is not required. And also you have created your user: NSDictionary within if let so you cannot access that variable out of scope. Declare your user above and then use it. Try this code:
let name = eventName.text
let date = eventDate.text
let text = eventDes.text
var data: NSData = NSData()
var user = NSDictionary()//declare here
if let image = photoImageView.image {
data = UIImageJPEGRepresentation(image,0.1)!
}
let base64String = data.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.Encoding64CharacterLineLength)
if let unwrappedName = name , unwrappedDate = date, unwrappedText = text{
//use your declared dictionary
user = ["name":unwrappedName, "date":unwrappedDate, "text":unwrappedText, "photoBase64":base64String]
}
//Add firebase child node
//let event = FIRDatabase().reference().child(name!)
//Do not create one more reference to database
rootref.child(name!).setValue(user)
//rootref.setValue(user)
// Write data to Firebase
//event.setValue(user.init())
navigationController?.popViewControllerAnimated(true)