Kaminari pagination information.

kaminari.rb

# see https://github.com/amatsuda/kaminari/issues/56 and https://github.com/amatsuda/kaminari/pull/140
module Kaminari
  # = Helpers
  module ActionViewExtension
    extend ::ActiveSupport::Concern
    module InstanceMethods
      def page_entries_info(collection, options = {})
        collection_name = options[:collection_name] || (collection.empty?? 'entry' : collection.first.class.name.underscore.sub('_', ' '))

        if collection.num_pages < 2
          case collection.size
          when 0; info = "No #{collection_name.pluralize.capitalize} found"
          when 1; info = "Displaying <strong>1</strong> #{collection_name.capitalize}"
          else;   info = "Displaying <strong>All #{collection.size}</strong> #{collection_name.pluralize.capitalize}"
          end
        else
          info = %{Displaying #{collection_name.pluralize.capitalize} <strong>%d&ndash;%d</strong> of <strong>%d</strong> in Total}% [
            collection.offset_value + 1,
            collection.offset_value + collection.length,
            collection.total_count
          ]
        end
        info.html_safe
      end
    end
  end
end