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-rw-r--r--actionpack/lib/action_dispatch/middleware/params_parser.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/params_parser.rb b/actionpack/lib/action_dispatch/middleware/params_parser.rb
index c2a4f46e67..5841c978af 100644
--- a/actionpack/lib/action_dispatch/middleware/params_parser.rb
+++ b/actionpack/lib/action_dispatch/middleware/params_parser.rb
@@ -37,6 +37,7 @@ module ActionDispatch
# The +parsers+ argument can take Hash of parsers where key is identifying
# content mime type, and value is a lambda that is going to process data.
def self.new(app, parsers = {})
+ parsers = parsers.transform_keys { |key| key.respond_to?(:symbol) ? key.symbol : key }
ActionDispatch::Request.parameter_parsers = ActionDispatch::Request::DEFAULT_PARSERS.merge(parsers)
app
end