active_admin_sidebar

easy change sidebar position with activeadmin (tested with active_admin-0.5.0)

Add including of css file

@import "active_admin_sidebar/index";

to the app/assets/stylesheets/active_admin.css.scss

Changing sidebar position dynamically with before_filter

# app/admin/posts.rb
ActiveAdmin.register Post do
  before_filter :left_sidebar!, :only=>[:show]
end

# app/admin/comments.rb
ActiveAdmin.register Comment do
  before_filter :right_sidebar!
end

Moving sidebar to the left within all resource (config/initializers/active_admin.rb)

# == Controller Filters
#
# You can add before, after and around filters to all of your
# Active Admin resources from here.
#
config.before_filter do
  left_sidebar! if respond_to?(:left_sidebar!)
end

Disabling using sidebar layout on dashboards (if you setup sidebar position with initializer)

ActiveAdmin.register_page "Dashboard" do
  controller {skip_before_filter :left_sidebar!}
  #.....
end

Example