class Rack::MethodOverride

def method_override_param(req)
  req.POST[METHOD_OVERRIDE_PARAM_KEY] if req.form_data? || req.parseable_data?
rescue Utils::InvalidParameterError, Utils::ParameterTypeError, QueryParser::ParamsTooDeepError
  req.get_header(RACK_ERRORS).puts "Invalid or incomplete POST params"
rescue EOFError
  req.get_header(RACK_ERRORS).puts "Bad request content body"
end