Xcode is looking for core data entity names with dot; not compiling

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The dot files are generated by Xcode8. See WWDC2016. I ran into the same issue after having to delete derived data due to another issue.

Two possible fixes:

1) The recommended, modern approach

  • Delete all generated NSManagedObject subclasses from your project, if exists.
  • Set Codegento Class Definition in your .xcdatamodel for all entities
  • Make sure Module is empty (“Global Namespace” in light gray) (workaround an Apple bug, see @Chris Hansons answer)

Note: Even you do not see the generated files in your project, Xcode has a reference to it, so you are able to write extensions and such. For instance:

extension MyEntity {
    func doSomething() {
        //
    }
}

Also, you can command+click to the generated file within Xcode.

2) A rather paranoid but bullet-prove approach, ignoring the new Xcode features

  • Delete all generated NSManagedObject subclasses from your project, if exists.
  • Set Codegento Manual/None in your .xcdatamodel for all entities
  • Clean project
  • Clean DerivedData folder
  • Restart Xcode
  • Manually generate NSManagedObject subclasses (in “Editor” menu)
  • Make sure those files are added to your project
  • build

If your problem persists, repeat:

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