We're supporting AR >= 4.1 now

kaminari-activerecord/lib/kaminari/activerecord/active_record_relation_methods.rb

@@ -17,16 +17,12 @@ module Kaminari
         # Remove includes only if they are irrelevant
         c = c.except(:includes) unless references_eager_loaded_tables?
 
-        # Rails 4.1 removes the `options` argument from AR::Relation#count
-        args = [column_name]
-        args << options if ::ActiveRecord::VERSION::STRING < '4.1.0'
-
         # .group returns an OrderedHash that responds to #count
-        c = c.count(*args)
+        c = c.count(column_name)
         if c.is_a?(Hash) || c.is_a?(ActiveSupport::OrderedHash)
           c.count
         else
-          c.respond_to?(:count) ? c.count(*args) : c
+          c.respond_to?(:count) ? c.count(column_name) : c
         end
       end
     end

kaminari-core/spec/models/active_record/active_record_relation_methods_spec.rb

@@ -30,11 +30,7 @@ if defined? ActiveRecord
       context "when the scope use conditions on includes" do
         it "should keep includes and successfully count the results" do
           # Only @author and @author2 have books titled with the title00x pattern
-          if ActiveRecord::VERSION::STRING >= "4.1.0"
-            User.includes(:books_authored).references(:books).where("books.title LIKE 'title00%'").page(1).total_count.should == 2
-          else
-            User.includes(:books_authored).where("books.title LIKE 'title00%'").page(1).total_count.should == 2
-          end
+          User.includes(:books_authored).references(:books).where("books.title LIKE 'title00%'").page(1).total_count.should == 2
         end
       end
 
@@ -45,24 +41,8 @@ if defined? ActiveRecord
       end
 
       context "when total_count receives options" do
-        it "should return a distinct total count for rails < 4.1" do
-          if ActiveRecord::VERSION::STRING < "4.1.0"
-            User.page(1).total_count(:name, :distinct => true).should == 4
-          end
-        end
-
         it "should ignore the options for rails 4.1+" do
-          if ActiveRecord::VERSION::STRING >= "4.1.0"
-            User.page(1).total_count(:name, :distinct => true).should == 7
-          end
-        end
-      end
-
-      if ActiveRecord::VERSION::STRING < '4.1.0'
-        context 'when count receives options' do
-          it 'should return a distinct set by column for rails < 4.1' do
-            User.page(1).count(:name, :distinct => true).should == 4
-          end
+          User.page(1).total_count(:name, :distinct => true).should == 7
         end
       end