Contents

require 'json'

module Payg
  # Entity class is the base class for all Payg objects
  # This saves data in a hash internally, and makes it available
  # via direct methods
  class Entity
    attr_reader :attributes

    def initialize(attributes)
      @attributes = attributes
    end

    # This method fakes attr_reader, but uses
    # the @attributes hash as the source, instead of
    # instance variables
    def method_missing(name)
      if @attributes.key? name.to_s
        @attributes[name.to_s]
      else
        super
      end
    end

    def respond_to_missing?(method_name, include_private = false)
      @attributes.key?(method_name.to_s) || super
    end

    # Public: Convert the Entity object to JSON
    # Returns the JSON representation of the Entity (as a string)
    def to_json(*args)
      @attributes.to_json(*args)
    end

    # Mutates the entity in accordance with
    # the block passed to this construct
    #
    # Used to implement bang methods, by calling
    # the non-bang method in the passed block
    def with_a_bang
      mutated_entity = yield
      @attributes = mutated_entity.attributes
      mutated_entity
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
payg-0.1.2	lib/payg/entity.rb
payg-0.1.1	lib/payg/entity.rb
payg-0.1	lib/payg/entity.rb
payg-0.0.1	lib/payg/entity.rb