Anyone who works with Ruby on Rails applications knows that, as a project grows, quickly understanding the relationships between models can become increasingly difficult. Even when using traditional ERD ( Entity Relationship Diagram ) generation tools, there is usually some friction in the workflow: generating files, manually updating diagrams, or relying on external processes. With that in mind, I created the Rails Realtime ERD gem. What is Rails Realtime ERD? rails-realtime-erd is a Ruby on Rails gem that allows you to visualize your schema ERD diagrams in real time directly inside your application . The idea is simple: Install the gem Add it to your project Open a route See your diagram automatically updated No manual image generation. No intermediate exports. No leaving your application context.…