Need help for RestKit data sync scenario

Question

I am using RestKit for an iOS To app. I already had done following using restkit: 1. Pull server objects from rest api in json format. 2. Delete orphan objects in core data whic

Answer 1

RestKit includes reachability monitoring (actually part of AFNetworking). So you can set a block to be run when the status changes:

[objectManager.HTTPClient setReachabilityStatusChangeBlock:...

Generally, store the item locally in all cases. When the item has been pushed to the server, set the sync date or a flag on the item to confirm that it has been updated.

This is really a broader question about how you manage local modifications and updates to the server. You may want an overall scheme to list the dirty objects and push updates to the server and have the server response set the sync time for each item. If you use 2 dates (one for the last local modification and one for the remote sync) then a quick predicate fetch on the model will tell you which objects are dirty and need to be pushed to the server.