Open Radar

 
Summary:

I believe that, in order for a Core Data Mapping Model to work, it needs to be bundled within the ".xcdatamodeld" package.  As near as I can tell, this is not possible with Xcode 4.

If I create a mapping model with the "New File" workflow, the app asks where I should save the file.  But inside the ".xcdatamodeld" package is not an option.

If I import an existing ".xcdatamodeld" package into an Xcode project, its ".xcdatamodel" files will be included but its ".xcmappingmodel" files will not.

I looked through the relevant documentation, but stopped in my tracks when I saw that the screenshots were from Xcode 3.

I ended up working around this by using Xcode 3 on a Snow Leopard Server VM.

I honestly don't know whether I am missing something or whether this functionality does not exist in Xcode 4.x.

Steps to Reproduce:

1.  Try to add a mapping model by selecting "File" -> "New" -> "File…" from the menu bar and indicating that you want to add a mapping model for to a Mac project.
2.  Try to save that as part of an ".xcdatamodeld" package.

Expected Results:

Add the mapping model to the project as part of the ".xcdatamodeld" package.

Actual Results:

Unable to select that as a save destination.

Regression:

I have this problem on Xcode 4.5.2. I have had the same problem on other Xcode 4.x versions as well; I don't think I have ever successfully added a mapping model in Xcode 4.x.

Notes:

This is a Mac (not an iOS) project.

It seems unlikely that this is as broken as it looks to me, so if I am missing something by all means let me know.  ;-)