On Mar 9, 2012, at 04:27 AM, Jerry Krinock wrote:
> On 2012 Mar 07, at 23:48, Martin Hewitson wrote:
>
>> I have an app which works with autosave and Versions browser.
>
> Oh, so you've implemented +[NSDocument autosavesInPlace] ;)
>
>> I have a file-monitor in the app which reloads the document if it changes on
>> disk.
>
> Great feature. I've done that too.
>
>> For the reloading I was simply calling -revertDocumentToSaved: …
>
> If your document is Core Data, forget it. You'll need to close and re-open.
> Ugly, but at least it doesn't display any errors and you'll be able to ship
> sometime this year.
>
>> "The document “foo.txt” could not be saved. The file has been changed by
>> another application."
>
>
> I've successfully beaten that monster a couple times with the following
> method. It looks silly, but it works. Try sprinkling one in during your
> reload somewhere…
>
> @implementation NSDocument (SyncModDate)
>
> - (void)syncFileModificationDate {
> NSFileManger* fm = [NSFileManager defaultManager] ;
> NSDictionary* fileAttributes = [fm attributesOfItemAtPath:[[self fileURL]
> path]
> error:NULL] ;
> NSDate* newDate = [fileAttributes objectForKey:NSFileModificationDate] ;
> [self setFileModificationDate:newDate] ;
> }
>
> @end
Superb. That fixed it. Thanks!
Martin
>
> I think I got the idea from here:
>
> http://stackoverflow.com/questions/380076/manual-core-data-schema-migration-without-document-changed-warning
>
>
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: [email protected]
WWW: http://www.aei.mpg.de/~hewitson
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