Generate PlantUml from CoreData

Apple got rid of the Core Data Model Editor Style in Xcode 14 https://developer.apple.com/forums/thread/710008

• Ruby (version 2.0 or later)
• Nokogiri gem for XML parsing

You can install the Nokogiri gem using:

gem install nokogiri

Save the script to a file, for example, xcdatamodel_to_plantuml.rb.

-f, --file FILE - Path to the .xcdatamodel or .xcdatamodeld file.
-h, --help - Prints help message.

To run the script, use the following command:

ruby xcdatamodel_to_plantuml.rb -f path/to/your/model.xcdatamodel

Or for a .xcdatamodeld package:

ruby xcdatamodel_to_plantuml.rb -f path/to/your/model.xcdatamodeld

This will output the PlantUML representation of your Core Data model to the console. You can redirect the output to a file if needed:

ruby xcdatamodel_to_plantuml.rb -f path/to/your/model.xcdatamodel > model.puml

Or for a package:

ruby xcdatamodel_to_plantuml.rb -f path/to/your/model.xcdatamodeld > model.puml