Pagination without finding total count

lib/kaminari/mongoid/mongoid_criteria_methods.rb

@@ -31,7 +31,12 @@ def total_count #:nodoc:
  end
  end
 
+ def without_count
+ extend ::Kaminari::PaginatableWithoutCount
+ end
+
  private
+
  def unpage
  clone.tap do |crit|
  crit.options.delete :limit
@@ -41,3 +46,25 @@ def unpage
  end
  end
 end
+
+module Kaminari
+ module PaginatableWithoutCount
+ # Method used to find last page, force setting to false and then use @records.present?
+ # in views to determine if link_to_next_page needs to be displayed.
+ def last_page?
+ false
+ end
+
+ # Method used to check if current page greater than total pages, force setting to false and then use @records.present?
+ # in views to determine if link_to_next_page needs to be displayed.
+ def out_of_range?
+ false
+ end
+
+ # Force to raise an exception if #total_count is called explicitly.
+ def total_count
+ raise "This scope is marked as a non-count paginable scope and can't be used in combination " \
+ "with `#paginate' or `#page_entries_info'. Use #link_to_next_page or #link_to_previous_page instead."
+ end
+ end
+end

test/models/mongoid/mongoid_test.rb

@@ -11,6 +11,20 @@ class MongoidCriteriaMethodsTest < ActiveSupport::TestCase
  assert_equal 1, User.page.tap(&:total_count).where(salary: 1).total_count
  end
  end
+
+ sub_test_case '#without_count' do
+ setup do
+ 5.times { User.with(database: 'without_count_db') { |u| u.create!(salary: 1) } }
+ end
+
+ test 'it should use default settings for last_page and out_of_range' do
+ users = User.max_scan(20).page(1).without_count
+
+ assert_instance_of Mongoid::Criteria, users
+ assert_equal false, users.last_page?
+ assert_equal false, users.out_of_range?
+ end
+ end
 end
 
 class MongoidExtensionTest < ActiveSupport::TestCase