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Re: Core Data Mapping Model: New attributes missing in Editor
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Re: Core Data Mapping Model: New attributes missing in Editor


  • Subject: Re: Core Data Mapping Model: New attributes missing in Editor
  • From: Jerry Krinock <email@hidden>
  • Date: Tue, 02 Jul 2013 06:12:39 -0700

On 2013 Jul 01, at 21:45, Michael Babin <email@hidden> wrote:

> I get an error after step 3 (project is open) whenever I select the MyDocument.xcdatamodel. Tried with both Xcode 4.5.2 and Xcode 4.6.3. Perhaps there is some problem or incompatibility with that file?

You must have gotten a different Sample Project, Michael.  The data model file in the current TwoManyControllers.xcodeproj is named APLDocument.xcdatamodel.

> Did you perhaps define the new attribute after you had created the mapping model? If so, does "Refresh Data Models" and/or "Update Default Mappings" (Editor menu with mapping model selected) have any effect?

AHHHHH!  That was it.  Yes, I'd forgotten about that stupid "Refresh Data Models" thing.  (It's an item in menu > Editor whenever a .xcmappingmodel file is being edited.)  Clicking that item "fixed" it.

> I will echo Juan Fernandez's experience with the generated mapping model not being usable at runtime to migrate a store. Ran into that same problem recently.

I'm cautiously confident that Xcode 5 will have a net decrease in Core Data modeling bugs.

Thanks again, guys.

Jerry
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References: 
 >Core Data Mapping Model: New attributes missing in Editor (From: Jerry Krinock <email@hidden>)
 >Re: Core Data Mapping Model: New attributes missing in Editor (From: Michael Babin <email@hidden>)

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