Use Active Admin for your dashboards. Inherited resources for controllers, which generates a set of restful actions for a model. And simple form for your forms.

Use Active Admin for your dashboards. Inherited resources for controllers, which generates a set of restful actions for a model. And simple form for your forms. They’re all rails ready ruby gems. This covers 60-80% of the most basic CRUD use cases. Though with any reasonably robust real world application you'll still need to write a lot of more specific, custom logic for the pages that are critical to your domain.