Force re-sync all the data possible? about contentful-persistence.swift HOT 5 CLOSED

Hello @pravking,

You can re-sync the content of the core data by setting sync token to nil and then performing a sync request. Add this method to your codebase.

    /// Resets the sync token and allow for further sync of the content again. Make sure you cleaned up all your
    /// models before resyncing.
    func resetSyncToken(moc: NSManagedObjectContext) {
        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: String(describing: SyncSpace.self))

        do {
            guard let syncSpace = try moc.fetch(fetchRequest).first as? SyncSpace else { return }
            syncSpace.syncToken = nil

        } catch let error as NSError {
            print(error)
        }
    }

Let me know if that works for you.

from contentful-persistence.swift.

Thanks for the solution @tomkowz.

Had to use 'SyncInfo' instead of 'SyncSpace' given in the code snippet to get it working.

from contentful-persistence.swift.

Hmm... Okay, I see the SyncInfo does not expose the syncToken. I think you could then remove the SyncInfo from the store and then re-sync. Removing it from the store will have the same effect like setting it to nil.

    private func deleteSyncInfo() {
        let fetchRequest: NSFetchRequest<NSFetchRequestResult> = NSFetchRequest(entityName: "SyncInfo")
        let deleteRequest = NSBatchDeleteRequest(fetchRequest: fetchRequest)

        do {
            try managedObjectContext.persistentStoreCoordinator?.execute(deleteRequest, with: managedObjectContext)
            try managedObjectContext.save()

        } catch let error as NSError {
            print(error)
        }
    }

Btw. I know ContentfulPersistence just for a bit now but in my demo projects for debugging purposes I am using a custom SyncSpace instead of SyncInfo because of the easy access to the token.

When you switch to use SyncSpace you'll not need to do a delete request because token will be nil anyway.

Let me know if the above work for you.

from contentful-persistence.swift.

Thanks @tomkowz removing SyncInfo from store is also working.

Also, is it necessary to clear all the models before re-syncing?
When I tried clearing only the SyncInfo model and then calling sync also the re-syncing is working.

from contentful-persistence.swift.

I don't think this is necessary. If that works for you without removing data then that's fine. That was my advice just to make sure. I think we can close this one then.

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