Fix for ascii-8bit chars making it in as keys in params

gistfile1.txt

module ActionDispatch
  module Http
    module Parameters
      private
      def encode_params(params)
        return params unless "ruby".encoding_aware?
        if params.is_a?(String)
          return params.force_encoding("UTF-8").encode!
        elsif !params.is_a?(Hash)
          return params
        end
        
        h = {}
        
        params.each do |k, v|
          h[encode_params(k.dup)] =
            case v
            when Hash
              encode_params(v)
            when Array
              v.map! {|el| encode_params(el) }
            else
              encode_params(v)
            end
        end
        
        h
      end
    end
  end
end