What's an elegant way to conditionally add a class to an HTML element in a view?

What's an elegant way to conditionally add a class to an HTML element in a view?

ruby-on-rails views

ruby-on-rails

How does local_assigns work in Rails?

ruby-on-rails views

ruby-on-rails

Create Ruby on Rails views (only) after controllers and models are already created

ruby-on-rails views models scaffold

ruby-on-rails

Rails - Displaying Foreign Key References in a form

ruby-on-rails ruby forms views

ruby-on-rails

Rails: Refactoring, views, helpers: how does it all go together?

ruby-on-rails refactoring views helper

ruby-on-rails

undefined method `new_confirmation_path' Confirmation Module Devise + MongoID

ruby-on-rails views devise mongoid

ruby-on-rails

Inline HAML Links but with content

ruby-on-rails views haml

ruby-on-rails

Using an alternate Rails layout, but same view, on mobile devices

ruby-on-rails layout mobile views

ruby-on-rails