class Faraday::Request::UrlEncoded

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

def match_content_type(env)
  type = request_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