From 7ef6a27f89ee2cccc3a8f73123d2a7173c85f52f Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Tue, 3 Jul 2012 17:51:27 -0700
Subject: add Mime.fetch so we can have default mime types

---
 actionpack/lib/action_dispatch/http/mime_type.rb | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'actionpack/lib/action_dispatch/http')

diff --git a/actionpack/lib/action_dispatch/http/mime_type.rb b/actionpack/lib/action_dispatch/http/mime_type.rb
index ee1913dbf9..83cd3d1ca8 100644
--- a/actionpack/lib/action_dispatch/http/mime_type.rb
+++ b/actionpack/lib/action_dispatch/http/mime_type.rb
@@ -29,6 +29,11 @@ module Mime
     Type.lookup_by_extension(type.to_s)
   end
 
+  def self.fetch(type)
+    return type if type.is_a?(Type)
+    EXTENSION_LOOKUP.fetch(type.to_s) { |k| yield k }
+  end
+
   # Encapsulates the notion of a mime type. Can be used at render time, for example, with:
   #
   #   class PostsController < ActionController::Base
-- 
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