Sam questions

• Safe way to store decryptable passwords in ruby
• valid_json? check in ruby is not working
• jQuery media validation by content type
• Receiving null value in POST param
• Difference between update and update_attributes
• Beautify ERB files in rails3
• Google-Oauth authentication error
• can't dump anonymous class #<Module -error on caching in rails 3
• unterminated regular expression literal js error
• No implicit conversion of HTTParty::Response into String

Sam answers