Module: CodedAttribute

Defined in:
lib/coded_attribute.rb

Overview

CodedAttributes

Instance Method Summary collapse

Instance Method Details

#coded_attribute(*attributes_and_codes) ⇒ Object 



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# File 'lib/coded_attribute.rb', line 5

def coded_attribute(*attributes_and_codes)
  if attributes_and_codes.last.is_a? Hash
    codes = attributes_and_codes.pop
  elsif attributes_and_codes.last.is_a? Array
    codes = attributes_and_codes.pop.inject({}) { |h, v| h.merge! h.keys.count => v }
  end

  attributes = attributes_and_codes.inject({}) do |hash, attribute|
    hash.merge! attribute.is_a? Hash ? attribute :  { attribute => "#{attribute}_code" }
  end

  attributes.each_pair do |method, attribute|
    class_variable_set :"@@#{method}_codes", codes
    cattr_reader :"#{method}_codes"

    define_method :"#{method}" do
      self.class.class_variable_get("@@#{method}_codes")[read_attribute(attribute)]
    end

    define_method :"#{method}=" do |value|
      write_attribute(attribute, self.class.class_variable_get("@@#{method}_codes").key(value.to_sym))
    end
  end # attributes.each_pair
end