Bring AM up to date with new rendering stack.

actionmailer/lib/action_mailer/base.rb

@@ -614,14 +614,12 @@ module ActionMailer #:nodoc:
 
     def each_template(paths, name, &block) #:nodoc:
       Array(paths).each do |path|
-        self.class.view_paths.each do |load_paths|
-          templates = load_paths.find_all(name, {}, path)
-          templates = templates.uniq_by { |t| t.details[:formats] }
+        templates = lookup_context.find_all(name, path)
 
-          unless templates.empty?
-            templates.each(&block)
-            return
-          end
+        unless templates.empty?
+          templates = templates.uniq_by { |t| t.details[:formats] }
+          templates.each(&block)
+          return
         end
       end
     end

actionmailer/lib/action_mailer/old_api.rb

@@ -206,7 +206,7 @@ module ActionMailer
       if String === @body
         @parts.unshift create_inline_part(@body)
       elsif @parts.empty? || @parts.all? { |p| p.content_disposition =~ /^attachment/ }
-        self.class.view_paths.first.find_all(@template, {}, @mailer_name).each do |template|
+        lookup_context.find_all(@template, @mailer_name).each do |template|
           @parts << create_inline_part(render(:_template => template), template.mime_type)
         end
 

actionpack/lib/action_view/lookup_context.rb

@@ -64,6 +64,11 @@ module ActionView
         @view_paths.find(name, key.details, prefix, partial || false, key)
       end
 
+      def find_all(name, prefix = nil, partial = false)
+        key = details_key
+        @view_paths.find_all(name, key.details, prefix, partial || false, key)
+      end
+
       def template_exists?(name, prefix = nil, partial = false)
         key = details_key
         @view_paths.exists?(name, key.details, prefix, partial || false, key)

actionpack/lib/action_view/paths.rb

@@ -9,6 +9,14 @@ module ActionView #:nodoc:
       METHOD
     end
 
+    def find_all(path, details = {}, prefix = nil, partial = false, key=nil)
+      each do |resolver|
+        templates = resolver.find_all(path, details, prefix, partial, key)
+        return templates unless templates.empty?
+      end
+      []
+    end
+
     def find(path, details = {}, prefix = nil, partial = false, key=nil)
       each do |resolver|
         if template = resolver.find(path, details, prefix, partial, key)

actionpack/lib/action_view/render/rendering.rb

@@ -64,6 +64,8 @@ module ActionView
         Template::Text.new(options[:text], self.formats.try(:first))
       elsif options.key?(:file)
         with_fallbacks { find_template(options[:file], options[:_prefix]) }
+      elsif options.key?(:_template)
+        options[:_template]
       elsif options.key?(:template)
         find_template(options[:template], options[:_prefix])
       end