active admin in rails 4.0.0 DEPRECATION WARNING

Question

I am using active admin as given in Active admin install with Rails 4 . gem 'activeadmin', github: 'activeadmin' is installing. But still i am getting error after running rails generate active_admin:install . The error is

DEPRECATION WARNING: Support for Rails < 4.0.4 will be dropped from Formtastic 4.0. invoke  devise
To use devise you need to specify it in your Gemfile. If you don't want to use devise, run the generator with --skip-users.

Answer 1

It means you did not install devise .

You want to

a) install devise: gem install devise , and then run rails generate active_admin:install . This will create default AdminUser object.

b) use the hint from warning, and install activeadmin with rails generate active_admin:install --skip-users .