For Rails and general backend development, I liked reading through the backend code for Gitlab CE (https://gitlab.com/gitlab-org/gitlab-ce https://gitlab.com/gi

For Rails and general backend development, I liked reading through the backend code for Gitlab CE (https://gitlab.com/gitlab-org/gitlab-ce https://gitlab.com/gitlab-org/gitlab-ce). Their code style follows Rails best practices pretty extensively. For smaller projects with fewer configuration points, don't worry about abstracting as much as they do.