Active admin install with Rails 4

Apr 20, 2015 update For Rails 4 (according to the official github page) use either master: gem ‘activeadmin’, github: ‘activeadmin’ Or rubygems: gem ‘activeadmin’, ‘~> 1.0.0.pre1’ Feb 14, 2015 update For Rails 4 (according to the official github page) use: gem ‘activeadmin’, github: ‘activeadmin’ Sept 4, 2014 update For Rails 4.0 and 4.1 (according to … Read more