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Recommended code reading from Ruby Parley

Ruby

• cane: https://github.com/square/cane
• Capybara: https://github.com/jnicklas/capybara
• REST Client: https://github.com/archiloque/rest-client
• Savon: https://github.com/savonrb/savon
• Unicorn: https://github.com/defunkt/unicorn

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List moved

Please use https://github.com/bf4/learning to fork and pull changes.

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# from http://web.archive.org/web/20120406010350/http://mediumexposure.com/multiple-table-inheritance-active-record
# the below code creates a macro 'acts_as_product' that you can include in an AR model
# including 'acts_as_product' adds the attributes from the ProductProperties model/table
# so that, e.g. a Tee can have attributes that are a combination 
# of the tees tables and the product_properties table
class ActiveRecord::Base
  def self.acts_as_product
    include Sellable
  end
end

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# Multiple table inheritance in Rails
# from http://web.archive.org/web/20120406010350/http://mediumexposure.com/multiple-table-inheritance-active-record
# the below code creates a macro 'acts_as_title' that you can include in an AR model
# including 'acts_as_title' adds the attributes from the TitleProperties model/table
# so that, e.g. a TvTitle can have attributes that are a combination 
# of the tv_titles table and the title_properties table
# and behaves more or less as a normal AR object.
# 
# yeah this looks a little nuts and needs refactoring

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This was my solution for a polymorphic many-to-many association

class ItemCountry < ActiveRecord::Base
  belongs_to :locatable, :polymorphic => true
  belongs_to :country
  # fields are :locatable_id, :locatable_type, :country_id
end

class Title < ActiveRecord::Base

has_many :countries, :through => :item_countries, :as => :locatable

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# http://engineering.nulogy.com/posts/hexagonal-architecture-for-rails-developers
class OrdersController < ApplicationController
  #...

  def create
    create_order = CreateOrder.new(OrderRepository, self)
    create_order.create current_user, params[:order]
  end

  def order_creation_succeeded order

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Yaml Recipes

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- img_url = "http://example.com/image.jpg"
- img_type = img_url.split('.')[-1]
- img_binary = open(img_url).read
- img_data = ActiveSupport::Base64.encode64(img_binary).gsub("\n", '')
%img{src: "data:image/#{img_type};base64,#{img_data}"}

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I've found understanding the ruby object model to be * extremely* valuable

module ModMax; end
module ModMen
  module OldFashioned; end
  class Moddy < Waters; end
end
class ImYourDaddy; end
class KlassAct < ImYourDaddy
  include ModMen

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Moved