-
Practice makes perfect, and solving tasks with pure Ruby is a great strategy for improving. I'd suggest trying out https://exercism.org/tracks/ruby. After solving a task, look how others have solved it and get familiar with their approaches. Some of them are a very useful tool to keep in your belt.
-
CodeRabbit
CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
-
I actually don't know of a good "beyond the basics" Rails course. The one or two that I've seen out there are prohibitively expensive. For me the best way forward has been to improve in specific areas, such as OOP, testing, and SQL basics. I've made a list of my favorite resources in each area, which might help you.