How can I create a new Dashboard without a model?

Created by: atomtigerzoo

I want to create a new dashboard for creating new database entries with mixed fields from different models. In my case it's a new Book with matching Authors and Recipes. All of them have models and dashboards, but I need a new create method to create a book with multiple authors and multiple recipes on one page.

I tried adding a new FOO_dashboard.rb and FOO_controller.rb file with a matching route. But I get an error uninitialized constant FOO after that.

How would I do this?