Ruby style guides

gistfile1.rb

# This class holds the logic for X
class Foo
  extend SomeModule
  include SomeModule
  
  # associations
  has_many :bars
  
  # scopes
  named_scope :special_foos
  
  # validations
  validates_presence_of :name
  
  # callbacks
  reader/writer
  delegates

  class <<self
    def some_class_method
      # do stuff
    end
  end
  def initialize
  end
  
  def some_instance_method
    # do stuff
  end

  private

    def some_private_method
      # do stuff
    end

end