How to simulate autosave in Core Data application?
How to simulate autosave in Core Data application?
- Subject: How to simulate autosave in Core Data application?
- From: Patrick Calahan <email@hidden>
- Date: Tue, 18 Apr 2006 10:24:28 -0700
Apologies in advance if this is a FAQ or if I'm missing something
fundamental. I'm a Cocoa newbie and struggling to figure out how to
achieve auto-save-like behavior with a Core Data app that I'm writing.
My goal: Create a single-document application in the same vein as
iCal or Address Book - I don't want to expose the 'document' concept
to the user. I want to use Core Data to persist the document in /
Library/Application Support.
I understand autosave is not "directly supported" by
NSPersistentDocument; how is it indirectly supported? I basically
need to write code to the document/store to open or save in response
to certain events (application start, large changes, application
exit). I don't want to bother the user with open and save dialogs.
It's not clear to me whether I'm supposed to call the document or the
managed object context directly - I've seen a variety of odd and
surprising behaviors (to me, at least) with either approach. I'd
like to know what is the proper way to handle this sort of thing.
If anyone has any general tips or a pointer to documentation on what
to do here, I'd be much obliged.
Thanks,
-p
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