I have .xcdatamodeld file in my project but it not opening up into the data model.
When I click on the file in the left sidebar in Xcode, it continues to display the contents of the previously selected file instead of displaying the data model. Likewise, when I right click on the file and choose "Open As >", I cannot select to display it as a Data Model—nothing comes up. I checked out the code from the SVN repo and even the filer owner is not able to see it in his workspace.
This is a symptom that I have seen from time to time. In at least one case, this was due Xcode having the wrong path stored in the
path component of the
XCVersionGroup section of the project.pbxproj file, and having an apparently unnecessary additional
name component in that section. It would probably be possible to manually edit this file, but I'm always reluctant to monkey around with the project file directly, and fortunately there's an easier way.
You're now left with just one reference to the data model, and it works.
One thing that appears to trigger this bug is moving the .xcdatamodeld file in the file structure on disk. Even after correctly re-associating the file with the new location (i.e., it no longer appears in red in the sidebar), the one section of the Project file mentioned above is not correctly updated, and thus the file is not treated fully correctly as an Xcode Data Model file.