Module: ONIX::ListWriter

Included in:
DiscountCoded, Price, Product, ProductIdentifier, RelatedProduct, WorkIdentifier
Defined in:
lib/onix/list_writer.rb

Instance Method Summary collapse

Instance Method Details

#list_writer(name, options = {}) ⇒ Object 



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# File 'lib/onix/list_writer.rb', line 6

def list_writer(name, options = {})
  options.symbolize_keys!
  unless options.is_a?(Hash) && options[:list].is_a?(Integer)
    raise ArgumentError, "Must specify code list number as ':list => Integer'"
  end
  define_method("#{name}=") do |value|
    # Value can be Array, String or Fixnum
    # To iterate over all classes, convert all to Array
    # NB: Some entities (j303, j304, j305) can be space-separated string of values
    values = case value.class.to_s
    when 'Array'
      value
    when 'String'
      value.split(/\s+/)
    else
      [value]
    end
    values.each do |value|
      unless value.nil? || ONIX::Lists.list(options[:list]).keys.include?(value)
        raise ArgumentError, "Invalid #{("_" + name.to_s).downcase.gsub!(/_(.)/) { $1.upcase }} '#{value}' -- Refer to ONIX Code List #{options[:list]}"
      end
    end
    # :as option determines how value is stored in instance variable
    values = if options[:as] == Array || options[:as] == []
      values
    elsif options[:as] == String
      values.join(" ")
    else
      values.first
    end
    self.instance_variable_set("@#{name}", values)
  end
end