Add kaminari url path helper function

app/helpers/application_helper.rb

@@ -60,4 +60,8 @@ module ApplicationHelper
   def format_price(number)
     number_to_currency(number, precision: 0, locale: I18n.default_locale)
   end
+
+  def kaminari_path(url)
+    "#{root_url}#{url.delete('/')}"
+  end
 end