I'm not to the point of wiring up the UI yet. I will employ bindings when I do so but at the moment I am creating a complex data model using NSManagedObject subclasses with lots of customized behaviors. I do this all the time in Objective-c but I am uncertain how to go about doing so in MacRuby.
The @dynamic processor in Objective-C 2.0 autogenerates attribute and relationship accessors except for the to-many relationship convenience methods but obviously MacRuby has no such capability. I don't think the `attr_accessor ` in ruby will generate the proper core data accessors. I suppose my real question is: Do we have to write all the accessors like we used to do in the early days of Core Data in Objective-s 1.0 or is there some functionality in ruby or MacRuby that obviates the need to do so? Thanks, Shannon On Jun 27, 2011, at 5:55 PM, Matt Aimonetti wrote: > Hey Shannon, > > I'm not sure I fully understand, but you should be able to just set the > accessor and do the binding via Xcode as shown here: > http://ofps.oreilly.com/titles/9781449380373/_core_data.html > Let me know if that doesn't answer your question. > > - Matt > > On Mon, Jun 27, 2011 at 3:45 PM, Shannon Love <tech...@me.com> wrote: > Howdy, > > I've Core Data a lot in Objective-c and now I am trying to use it in MacRuby. > It occurs to me that I might need to create the to-many relationship > accessors just like you have to do in Objective-C. > > To clarify: Suppose I have a data model that models a file structure and > which looks like this: > > Folder{ > name:string > parent<<-->Folder.subFolders > subFolders<-->>Folder.parent > files<-->>File.folder > } > File{ > name:string > folder<<-->Folder.file > } > > In Objective-C, I would normally have methods in the `Folder` class that > would look like: > > addSubFoldersObject: > removeSubFoldersObject: > addSubFoldersObjects: > removeSubFoldersObjects: > > The methods themselves would use look something like: > > - (void)addSubFoldersObject:(FetchedPropertyExtractor *)value { > NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1]; > [self willChangeValueForKey:@"SubFolders" > withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects]; > [[self primitiveValueForKey:@"SubFolders"] addObject:value]; > [self didChangeValueForKey:@"SubFolders" > withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects]; > [changedObjects release]; > } > > Do you have to do the same thing in MacRuby or will the normal ruby set > operations suffice? > > Thanks, > Shannon Love a.k.a TechZen > > > > _______________________________________________ > MacRuby-devel mailing list > MacRuby-devel@lists.macosforge.org > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel > > > _______________________________________________ > MacRuby-devel mailing list > MacRuby-devel@lists.macosforge.org > http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
_______________________________________________ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
