What is the best framework to use, Yii or Ruby on Rails?
My answer to What is the best framework to use, Yii or Ruby on Rails? on Quora
This is a big decision, and it’s worth taking the time to pick what’s the best fit for you. I recommend going through the tutorials for each one, building the basic application they describe and seeing which made the most sense to you. As a Django developer, I suggest trying that framework too :)
If you just want a recommendation on Rails vs Yii, I would go for Rails. Ruby is a less frustrating language to develop in than PHP and has a higher quality collection of other open source libraries you can use in your project. Rails is also a more mature and more widely used framework.