Adding paginated? helper to active record extensions and page scope methods

README.md

@@ -91,6 +91,8 @@ User.page(2).prev_page         #=> 1
 User.page(1).first_page?       #=> true
 User.page(50).last_page?       #=> true
 User.page(100).out_of_range?   #=> true
+User.all.paginated?            #=> false
+User.page(1).paginated?        #=> true
 ```
 
 ### The `per` Scope

kaminari-activerecord/lib/kaminari/activerecord/active_record_model_extension.rb

@@ -9,6 +9,10 @@ module ActiveRecordModelExtension
     included do
       include Kaminari::ConfigurationMethods
 
+      def self.paginated?
+        false
+      end
+
       # Fetch the values at the specified page number
       #   Model.page(5)
       eval <<-RUBY, nil, __FILE__, __LINE__ + 1

kaminari-core/lib/kaminari/models/page_scope_methods.rb

@@ -87,5 +87,9 @@ def last_page?
     def out_of_range?
       current_page > total_pages
     end
+
+    def paginated?
+      limit_value.present?
+    end
   end
 end

kaminari-core/test/models/active_record/scopes_test.rb

@@ -378,6 +378,20 @@ def shutdown
           end
         end
 
+        sub_test_case '#paginated?' do
+          test 'before calling page' do
+            assert_false model_class.paginated?
+          end
+
+          test 'after calling page' do
+            assert_true model_class.page(1).paginated?
+          end
+
+          test 'after calling page and unscoping limit' do
+            assert_false model_class.page(1).unscope(:limit).paginated?
+          end
+        end
+
         sub_test_case '#count' do
           test 'page 1' do
             assert_equal 25, model_class.page.count