robodisco questions

• Why can't I use "mkdir" with a Pathname object?
• Query to find all messages a user is participating in
• How to develop gems where one is dependent on the other
• Rails - are validations only for data from user input via forms?
• What is curl and what are its uses for rails developers?
• Rails How to get all the grandchildren of an ojbect
• Saving cookies between scrapy scrapes
• Why does Rails orphan join records for polymorphic through associations?
• In Rails why can't I use reset_session or any of my methods in application_controller within my tests?
• Rails - in what order does dependent => destroy follow?

robodisco answers