Only set ActionView configuration inside the on_load block

actionpack/lib/action_view/railtie.rb

@@ -33,8 +33,8 @@ class Railtie < Rails::Railtie
     end
 
     initializer "action_view.set_configs" do |app|
-      ActionView::Base.default_method_for_update = app.config.default_method_for_update
       ActiveSupport.on_load(:action_view) do
+        self.default_method_for_update = app.config.default_method_for_update
         app.config.action_view.each do |k,v|
           send "#{k}=", v
         end