undasherize_keys

# File activesupport/lib/active_support/core_ext/hash/conversions.rb, line 242
            def undasherize_keys(params)
              case params.class.to_s
                when "Hash"
                  params.inject({}) do |h,(k,v)|
                    h[k.to_s.tr("-", "_")] = undasherize_keys(v)
                    h
                  end
                when "Array"
                  params.map { |v| undasherize_keys(v) }
                else
                  params
              end
            end