HelloWorld questions

• Mongoid Group By or MongoDb group by in rails
• Rails 3 ajax call - ActionView::MissingTemplate
• Capistrano::NoMatchingServersError on deploy:update_code
• Simple Mongoid Validation for create! - how to display error messages
• How to check if sidekiq is started?
• Oracle: Avoiding NULL value in to_date
• Angular.js integration with Ruby On Rails Forms
• dbvisualizer: set max rows in a select query
• Copying a local file from Windows to a remote server using scp [closed]

HelloWorld answers