collection_size returns correct value when used limit

Author: Zhomart

lib/active_admin/mongoid/helpers/collection.rb

@@ -1,10 +1,9 @@
-# module ActiveAdmin
-#   module Helpers
-#     module Collection
-#       def collection_size(collection=collection)
-#         raise collection.inspect
-#         collection.count
-#       end
-#     end
-#   end
-# end
+module ActiveAdmin
+  module Helpers
+    module Collection
+      def collection_size(collection=collection)
+        collection.count(true)
+      end
+    end
+  end
+end