Yury Lebedev questions

Yury Lebedev answers

• How to refactor ActiveRecord query?
• Better way to find unique record in has_many through relationship
• Rspec: run an outside rails server
• How to use favicon with the asset pipeline?
• How to get the first page of a PDF as an image using Carrierwave in rails?
• Convert rails activerecord to raw sql
• Rails 4 - Devise: getting ActionController::UnknownFormat on signup
• How does a browser execute AJAX response in rails?
• Faster way to find the last updated timestamp
• Gemfile require gem in all environments except one