ActionDispatch::Routing::DeprecatedMapper is gone in edge rails so only use it when it's defined.
ActionDispatch::Routing::DeprecatedMapper is gone in edge rails so only use it when it's defined.

betterplace/routing-filter,simi/routing-filter,svenfuchs/routing-filter,gauda/routing-filter,gauda/routing-filter,gauda/routing-filter,svenfuchs/routing-filter,simi/routing-filter,simi/routing-filter,svenfuchs/routing-filter