Local Parse Database gives error in SwiftUI

Question

I'm trying to store objects in a local Parse datastore on the device itself. I get an error when retrieving the stored object: 'Method requires Pinning enabled.'

I've implemented 'Parse.enalbelLocalDatastore() in AppDelegate.swift. I tried to hard-code the object to be sure there was an object to retrieve.


let configuration = ParseClientConfiguration
        {
            $0.applicationId = "..."
            $0.clientKey = "..."
            $0.server = "..."

        }
        Parse.enableLocalDatastore()
        Parse.initialize(with: configuration)
...
func blancoUser() {
        let object = PFObject(className: "UserData")
        object["id"] = (UUID().uuidString)
        object["LoginName"] = "userName"
        object["PinCode"] = "00000"
        object["ScreenName"] = "test"
        object["YearOfBirth"] = 0

        object.pinInBackground()
    }
...

let query = PFQuery(className: "UserData")
        var users:[UserData] = [UserData]()

        query.fromLocalDatastore()
        query.findObjectsInBackground { (objects: [PFObject]?, error: Error?) in
            if let error = error {
                print(error.localizedDescription)
            } else if let objects = objects

I want to get the variable 'users' with the locally stored user objects. What am I missing? Or does the ParseLocalDatastore work differently in SwiftUI.

Your blancoUser() method does not persist the record. Calling pinInBackground() does not persist the record. You should call the saveInBackground() on the new object. — Ian Bradbury, Oct 29 '19 at 22:00

score 0 · Answer 1 · answered Aug 14 '19 at 18:05

0

Can you try to initialize the SDK like this?

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        let parseConfig = ParseClientConfiguration {
            $0.isLocalDatastoreEnabled = true
            $0.applicationId = parseApplicationId
            $0.clientKey = parseClientKey
            $0.server = parseServerUrlString
        }
        Parse.initialize(with: parseConfig)
  }
}

Reference: https://docs.parseplatform.org/ios/guide/#local-datastore

answered Aug 14 '19 at 18:05

Davi Macêdo

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Thanks for the suggestion: this extra line made the error 'Method requires Pinning enabled.' disappear. However, there are no objects stored in the local database with the command 'object.pinInBackground()' – JanR Aug 15 '19 at 20:08
remove this line `object["id"] = (UUID().uuidString)` The ids are set in server side. You can't set your own ids. – Davi Macêdo Aug 15 '19 at 20:14
Unfortunately, this makes no difference. Print of the object after removing the id: object: { LoginName = userName; PinCode = 00000; ScreenName = test; YearOfBirth = 0; } It doesn't show up I the query: users: [] – JanR Aug 16 '19 at 17:06
In the code you send you are never setting the users var. Check the objects var inside the callback function. – Davi Macêdo Aug 17 '19 at 01:22

Local Parse Database gives error in SwiftUI

1 Answers1