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-rw-r--r--actionpack/lib/action_controller/metal/renderers.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/metal/renderers.rb b/actionpack/lib/action_controller/metal/renderers.rb
index 5272dc6cdb..abed6e53cc 100644
--- a/actionpack/lib/action_controller/metal/renderers.rb
+++ b/actionpack/lib/action_controller/metal/renderers.rb
@@ -6,6 +6,13 @@ module ActionController
Renderers.add(key, &block)
end
+ class MissingRenderer < LoadError
+ def initialize(format)
+ @format = format
+ super("No renderer defined for format: #{@format}")
+ end
+ end
+
module Renderers
extend ActiveSupport::Concern