EmFi questions

EmFi answers

• ActiveRecord named_scope, .scopes
• displaying markdown in my textarea
• Enforcing a Uniqueness Constraint in a Nested Form
• Appending Text To the Existing First Line with Sed
• Drop Down Box - Populated with data from another table in a form - Ruby on Rails
• Real time with Rails
• Using Rails models with accepts_nested_attributes_for
• Is validates_presence_of necessary if using validates_length_of?
• Order confirmation page in rails
• How to turn a single-site app into a mantainable multi-site app without code changes?