gistfile1.txt

# in foo.rb
 
class Foo
  attr_accessor :field1, :field2

  def initialize(options => {})
    @field1 = options[:field1] ||= nil
    @field2 = options[:field2] ||= nil
  end
end
 
f = Foo.new(:field1 => "value1", :field2 => "value2")
f.field1 # => "value1"