Firebase data persistence, updating troubles - Swift

Question

In my firebase database I use persistence to cache the data, but this give me a problem, because some of my data needs to be loaded from the database when the app loads and not from tha cached data. I have a tableview where the data from the database is shown, it needs to update with the database and not look for the saved data in the tableview. Right now I am using

 self.ref?.child(u.uid).observe(.value, with: { (snapshot) in
   print(offersnapshot)
})

to get the data from the data from the server. But right now the app needs to restart, before the data are updated.

The code you share sets up a listener and should (also) be called with the live version from the server. If you have a cached value for that reference and a network connection, the completion handler may fire twice: once for the cached version and once (if it is different) for the version from the server. — Frank van Puffelen, Nov 13 '17 at 14:55

score 1 · Answer 1 · answered Nov 13 '17 at 14:37

1

From the info you provided i think the problem is you did not enable the syncing of firebase cache data with the firebse server database. try this:

let scoresRef = Database.database().reference(withPath: "rootNode")
scoresRef.keepSynced(true)

answered Nov 13 '17 at 14:37

Y_Y

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Should I use the reference inside the snapshot or in the viewDidLoad? – Lasse Bickmann Nov 13 '17 at 18:18
inside viewDidLoad you can put this code and do not forget to reload the table view in the firebase value observer. – Y_Y Nov 14 '17 at 04:34

Firebase data persistence, updating troubles - Swift

1 Answers1