app_base.rb in railties-4.2.7.rc1

- old
+ new

@@ -109,10 +109,11 @@
          assets_gemfile_entry,
          javascript_gemfile_entry,
          jbuilder_gemfile_entry,
          sdoc_gemfile_entry,
          psych_gemfile_entry,
+         mime_type_gemfile_entry,
          @extra_entries].flatten.find_all(&@gem_filter)
       end
 
       def add_gem_entry_filter
         @gem_filter = lambda { |next_filter, entry|
@@ -306,9 +307,15 @@
         return [] unless defined?(Rubinius)
 
         comment = 'Use Psych as the YAML engine, instead of Syck, so serialized ' \
                   'data can be read safely from different rubies (see http://git.io/uuLVag)'
         GemfileEntry.new('psych', '~> 2.0', comment, platforms: :rbx)
+      end
+
+      def mime_type_gemfile_entry
+        return [] unless RUBY_VERSION < '2'
+
+        GemfileEntry.new('mime-types', '< 3', nil, require: false)
       end
 
       def bundle_command(command)
         say_status :run, "bundle #{command}"
 