How do I resolve the deprecation warning "Method to_hash is deprecated and will be removed in Rails 5.1"

I'm trying to update to Rails 5, I'm getting the following deprecation warning: DEPRECATION WARNING: Method to_hash is deprecated and will be removed in Rails 5.1, as ActionController::Parameters no longer inherits from hash. Using this deprecated behavior exposes potential security problems. If you continue to use this method you may be creating a security vulnerability in your app that can be ex

[kent-where-the-light-is]

“> params = params.permit(:yes) # (puts warning about unpermitted parameter :no) > params.to_h {"yes"=>"y"} # permitted values only > params.to_unsafe_h {"yes"=>"y"} # permitted values only > params.to_hash # (puts deprecation warning, but still safe) {"yes"=>"y"} # permitted values only”