Rails: activeadmin, undefined method `per' for #

Question

I installed ActiveAdmin successfully:

My gemfile code:

source \'https://rubygems.org\'

 gem \'rails\', \'3.2.10\'

 # Bundle edge Rails instead:
         


        

Answer 1

The above answers do not work anymore. An updated answer was given here by @zitoon:

if defined?(WillPaginate)
  module WillPaginate
    module ActiveRecord
      module RelationMethods
        def per(value = nil) per_page(value) end
        def total_count() count end
      end
    end
    module CollectionMethods
      alias_method :num_pages, :total_pages
    end
  end
end

I tried it myself. Works.