[unityByFreedom]

> I wrote that up here, in a fairly gigantic blog post:

That blog post is the same link for this thread.

> without creating a User model

A User model isn't necessary if you don't require login to use your tool.

[pmontra]

> My theory now is that whichever ActiveRecord model is closest to the UI will grow huge as it comes to incorporate a comprehensive catalog of user interactions. It's an interesting question, but it's also a topic for another time.

User preferences, settings, interaction history, whatever can be stored in different models. The User model can be slim.

[unityByFreedom]

Good to know. It seemed odd to include details about the framework. The tool could've been written in Django, Angular, React, etc.