HTTParty extensions

example_client.rb

class ExampleClient
  include HTTParty
  extend HTTPExceptions

  parser Class.new HTTParty::Parser
  parser.send :include, PresentParser
  parser.send :include, MashedParser
end

http_exceptions.rb

# Raise an exception for responses with 4xx and 5xx status codes.
# Use PresentParser so parsing an error response doesn't raise.
module HTTPExceptions
  def perform_request http_method, path, options
    response = super
    response.error! if response.response.is_a?(Net::HTTPClientError) or response.response.is_a?(Net::HTTPServerError)
    response
  end
end

mashed_parser.rb

# Turns XML, JSON and YAML bodies into `Hashie::Mash`s.
module MashedParser
protected
  def xml
    mashed super
  end

  def json
    mashed super
  end

  def yaml
    mashed super
  end

private

  def mashed thing
    if thing.is_a? Hash
      Hashie::Mash.new thing
    elsif thing.is_a? Array
      thing.map &method(:mashed)
    else
      thing
    end
  end
end

present_parser.rb

# Only parses body if present.
module PresentParser
protected
  def xml
    super unless body.blank?
  end

  def json
    super unless body.blank?
  end

  def yaml
    super unless body.blank?
  end
end