Django was born in a newsroom to deal with strict time-limits. It had to exclude a lot of routine activities during the development process. The Django project is represented as an app. You can combine different applications to build a more scalable and functional system with separate application modules that will not interfere with each other.
Ruby On rails RoR has the "coding by convention” paradigm in its root (core) providing developers with simplicity and flexibility without getting them overwhelmed with many intermediate decisions to be made. Rails framework is strong in “magic”: that’s the way developers call its automation. With RoR, you can only specify some “unusual” aspects of your application and the rest will be done automatically.
