Hi Quincey Thanks for the speedy reply. I'll look into having the root entity either parse from a plist or something similar.
Hmm, it just occured to me that I can put json strings in the user info, and parse them back into the user info. That would enable me to put complex nested dictionaries & arrays in there via the UI. Mikkel On 20/01/2011, at 21.26, Quincey Morris wrote: > On Jan 20, 2011, at 11:57, Mikkel Eide Eriksen wrote: > >> I have a Core Data model and I'd like to add some metadata about the >> entities/attributes/relationships. In most cases, strings are fine, but I'd >> also like to record arrays or even sub-dictionaries. This will reduce the >> amount of code in my app by a fair deal. >> >> As far as I can tell, the XCode UI only allows values added to the user info >> dictionary to be strings. I suppose I could use a delimted string and do >> [[userdict valueForKey:@"key"] componentsSeparatedByString:@"delimiter"]] >> wherever I access it to get an array, but since the goal is reducing the >> amount of code, this seems counterproductive. >> >> Any suggestions? > > I don't see any way to get a non-string value into the dictionary via the > data model window either, though there doesn't seem to be any inherent > restriction on the user info dictionary generally. > > One way might be to put the information in a separate plist file, and set the > entity's "userInfo" property programmatically. It looks like you'd have to be > sure to do that before the model is actually used to access the data. > > Or, you might be able to use a regular attribute instead of user info, using > the "transformable" type to get its value archived. That doesn't solve your > UI problem, of course, but might be part of a solution if nothing else works. > >
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