Merge pull request #875 from bfad/current-per-page

Add ability to inspect current value of per_page

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

@@ -19,7 +19,7 @@ def per(num, max_per_page: nil)
 
     def max_paginates_per(new_max_per_page)
       @_max_per_page = new_max_per_page
-      per ((defined?(@_per) && @_per) || default_per_page), max_per_page: new_max_per_page
+      per current_per_page, max_per_page: new_max_per_page
     end
 
     def padding(num)
@@ -52,6 +52,11 @@ def current_page
       raise ZeroPerPageOperation, "Current page was incalculable. Perhaps you called .per(0)?"
     end
 
+    # Current per-page number
+    def current_per_page
+      (defined?(@_per) && @_per) || default_per_page
+    end
+
     # Next page number in the collection
     def next_page
       current_page + 1 unless last_page? || out_of_range?

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

@@ -293,6 +293,20 @@ def shutdown
           end
         end
 
+        sub_test_case '#current_per_page' do
+          test 'per 0' do
+            assert_equal 0, model_class.page.per(0).current_per_page
+          end
+
+          test 'no per specified' do
+            assert_equal model_class.default_per_page, model_class.page.current_per_page
+          end
+
+          test 'per specified as 42' do
+            assert_equal 42, model_class.page.per(42).current_per_page
+          end
+        end
+
         sub_test_case '#next_page' do
           test 'page 1' do
             assert_equal 2, model_class.page.next_page