Why aren't my Firebase Storage URLs uploading to Google Cloud Firestore?

Question

I am trying to allow users to upload a profile photo to Firebase Storage. The image gets uploaded during the sign up process of my app. The image is being uploaded to Fireba

Answer 1

You can't use a return statement for a function that contains a closure as the function will return before the closure has executed.

Instead change your function to use a completion handler such as

func uploadProfilePic(completion: @escaping (String?, Error?) -> ()) {

Then once you get your download url call the handler.

    profilePhotosRef.downloadURL { (url, err) in
      completion(url, err)
    }

You can then use this function to populate your call to Cloud Firestore like so

   self.uploadProfilePic() { (url, error) in

    guard error....

    if let url = url {
      // do your upload here
    }
}