So in Rails 4 the long desired feature to use not
queries has been added.
Article.where.not(title: 'Rails 3')
Has similar support been added for or
queries, or are they planning to make it. I couldn't find anything by browsing through the release notes.
Obviously I tried
Article.where(title: 'Rails 3').or(title: 'Rails 4')
But that does not work.
Article.where(title: ['Rails 3', 'Rails 4'])
is how you'd do that in Active Record.
It's not possible to replicate any arbitrary SQL query using "Rails-y" syntax. But you can always just pass in literal sql.
So you could also do:
Article.where("articles.title = 'Rails 3' OR articles.title = 'Rails 4'")