Pass the template format to the digestor

This commit passes the template format to the digestor in order to come
up with a key.  Before this commit, the digestor would depend on the
side effect of the template renderer setting the rendered_format on the
lookup context.  I would like to remove that mutation, so I've changed
this to pass the template format in to the digestor.

I've introduced a new instance variable that will be alive during a
template render.  When the template is being rendered, it pushes the
current template on to a stack, setting `@current_template` to the
template currently being rendered.  When the cache helper asks the
digestor for a key, it uses the format of the template currently on the
stack.

1 files changed, 1 insertions, 1 deletions

diff --git a/actionview/lib/action_view/template/handlers/erb/erubi.rb b/actionview/lib/action_view/template/handlers/erb/erubi.rb
index 20510c3062..247b6d75d1 100644
--- a/actionview/lib/action_view/template/handlers/erb/erubi.rb
+++ b/actionview/lib/action_view/template/handlers/erb/erubi.rb
@@ -27,7 +27,7 @@ module ActionView
               include action_view_erb_handler_context._routes.url_helpers
               class_eval("define_method(:_template) { |local_assigns, output_buffer| #{src} }", @filename || "(erubi)", 0)
             }.empty
-            view.run(:_template, {}, ActionView::OutputBuffer.new)
+            view.run(:_template, nil, {}, ActionView::OutputBuffer.new)
           end
 
         private