class Faraday::Request::UrlEncoded

def call(env)
  match_content_type(env) do |data|
    params = Faraday::Utils::ParamsHash[data]
    env.body = params.to_query(env.params_encoder)
  end
  @app.call env
end

def match_content_type(env)
  if process_request?(env)
    env.request_headers[CONTENT_TYPE] ||= self.class.mime_type
    yield(env.body) unless env.body.respond_to?(:to_str)
  end
end

def process_request?(env)
  type = request_type(env)
  env.body and (type.empty? or type == self.class.mime_type)
end

def request_type(env)
  type = env.request_headers[CONTENT_TYPE].to_s
  type = type.split(';', 2).first if type.index(';')
  type
end