sandbox_ruby_meetup.rb

require 'json'

class RubyMeetup

  def initialize(api_request_response)
    # clean up the api response and set the @options_hash
    @options_hash = prep_api_response(api_request_response)
    # generate instance variables based on the hash keys in @options_hash
    set_instance_vars(@options_hash)
    # generate attr_accessor methods based on the hash keys in @options_hash
    set_attr_accessor(@options_hash)
  end

  def prep_api_response(api_request_response)
    api_request_response["results"][0]
  end

  def set_instance_vars(options_hash)
    options_hash.each do |key, value|
      instance_variable_set(:"@#{key}", value)
    end
  end

  def set_attr_accessor(options_hash)
    options_hash.each_key do |key|
      self.class.send(:attr_accessor, key)
    end
  end

end

# the JSON result of making a meetup api request for Philly.rb
api_request_response = JSON.parse(%q/{"results":[{"lon":-75.19999694824219,"visibility":"public","organizer":{"name":"Jearvon Dharrie","member_id":85981882},"link":"http:\/\/www.meetup.com\/Phillyrb\/","state":"PA","join_mode":"open","who":"Rubyists","country":"US","city":"Philadelphia","id":7739072,"category":{"id":34,"name":"tech","shortname":"tech"},"topics":[{"id":563,"urlkey":"opensource","name":"Open Source"},{"id":1040,"urlkey":"ruby","name":"Ruby"},{"id":3833,"urlkey":"softwaredev","name":"Software Developers"},{"id":20837,"urlkey":"ruby-on-rails","name":"Ruby On Rails"},{"id":25435,"urlkey":"test-driven-development","name":"Test Driven Development"},{"id":37019,"urlkey":"beginner-web-developer","name":"Beginner Web Developer"},{"id":37917,"urlkey":"object-oriented-programming","name":"Object Oriented programming"},{"id":95825,"urlkey":"ruby-on-rails-scalability","name":"Ruby on Rails Scalability"},{"id":95826,"urlkey":"ruby-on-rails-testing","name":"Ruby on Rails Testing"},{"id":150657,"urlkey":"web-application-development","name":"web application development"},{"id":153335,"urlkey":"sinatra-ruby-framework","name":"Sinatra Ruby Framework"}],"timezone":"US\/Eastern","group_photo":{"photo_link":"http:\/\/photos4.meetupstatic.com\/photos\/event\/6\/1\/2\/8\/600_295044872.jpeg","highres_link":"http:\/\/photos2.meetupstatic.com\/photos\/event\/6\/1\/2\/8\/highres_295044872.jpeg","thumb_link":"http:\/\/photos4.meetupstatic.com\/photos\/event\/6\/1\/2\/8\/thumb_295044872.jpeg","photo_id":295044872},"created":1363982320000,"description":"<p>Philly.rb is the one and only user group in the Philadelphia area dedicated to helping Ruby enthusiasts learn, network, and socialize.<\/p>","name":"Philly.rb","rating":4.81,"urlname":"Phillyrb","lat":39.959999084472656,"members":388}],"meta":{"lon":"","count":1,"link":"http:\/\/api.meetup.com\/2\/groups.json\/","next":"","total_count":1,"url":"http:\/\/api.meetup.com\/2\/groups.json\/?key=735a652547322240967f1171647f5f&group_id=7739072&radius=25.0&order=id&desc=false&offset=0&format=json&page=200&fields=","id":"","title":"Meetup Groups v2","updated":1387465209000,"description":"\"\"","method":"Groups","lat":""}}/)

test = RubyMeetup.new(api_request_response)