1 files changed, 12 insertions, 2 deletions
diff --git a/actionpack/lib/abstract_controller/rendering.rb b/actionpack/lib/abstract_controller/rendering.rb
index 1dec3f2c3e..ac407bda5e 100644
--- a/actionpack/lib/abstract_controller/rendering.rb
+++ b/actionpack/lib/abstract_controller/rendering.rb
@@ -157,13 +157,23 @@ module AbstractController
         options[:_template_name] = options[:file]
       end
 
-      name = (options[:_template_name] || action_name).to_s
+      name = (options[:_template_name] || options[:action] || action_name).to_s
+      options[:_prefix] ||= _prefix if (options.keys & [:partial, :file, :template]).empty?
+
+      details = _normalize_details(options)
 
       options[:_template] ||= with_template_cache(name) do
-        find_template(name, { :formats => formats }, options)
+        find_template(name, details, options)
       end
     end
 
+    def _normalize_details(options)
+      details = { :formats => formats }
+      details[:formats] = Array(options[:format]) if options[:format]
+      details[:locale]  = Array(options[:locale]) if options[:locale]
+      details
+    end
+
     def find_template(name, details, options)
       view_paths.find(name, details, options[:_prefix], options[:_partial])
     end