Contents

module HungryForm
  module Elements::Base
    # This module adds hashing capabilities to form elements.
    # Do not include this module in your classes. It is already
    # included in the base_element class.
    #
    # Sample usage:
    #
    # class MyField
    #   attr_accessor :param1, :param2
    #   hashable :param1, :param2
    #   ...
    # end
    #
    # Any instance of MyField class will have the "to_hash" method
    # that will contain only the accessor/reader params defined in
    # the hashable macro.
    module Hashable
      def self.included(base)
        base.extend ClassMethods
        base.class_attribute :hashable_attributes
        base.hashable_attributes = []
      end

      def to_hash
        hash = self.class.hashable_attributes.each_with_object({}) do |param, h|
          h[param] = send(param) unless send(param).nil?
        end
        hash.merge(_type: self.class.name.demodulize)
      end

      module ClassMethods
        def hashable(*params)
          self.hashable_attributes = hashable_attributes.dup.concat params
        end
      end
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
hungryform-0.0.4	lib/hungryform/elements/base/hashable.rb