Module: Foobara::Enumerated::Accessors::ClassMethods

Defined in:
foobara-0.0.110/projects/enumerated/src/accessors.rb

Instance Method Summary collapse

Instance Method Details

#enumerated(attribute_name, values_source = nil) ⇒ Object 



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# File 'foobara-0.0.110/projects/enumerated/src/accessors.rb', line 10

def enumerated(attribute_name, values_source = nil)
  original_values_source = values_source

  if values_source.nil?
    module_name = Util.classify(attribute_name)

    values_source = begin
      Util.const_get_up_hierarchy(self, module_name)
    rescue NameError
      # :nocov:
      raise CannotDetermineModuleAutomatically,
            "could not find a module for #{module_name}. Maybe consider passing it in explicitly."
      # :nocov:
    end
  end

  values = Values.new(values_source)

  attribute_name = attribute_name.to_sym

  # :nocov:
  unless respond_to?(:enumerated_type_metadata)
    # :nocov:
    class << self
      attr_accessor :enumerated_type_metadata
    end

    self.enumerated_type_metadata = {}
  end

  attr_reader attribute_name

  define_method "#{attribute_name}=" do |value|
    value = Values.normalize_value(value)

    if !value.nil? && !values.all_values.include?(value)
      raise ValueNotAllowed, "Received #{value} for #{attribute_name} but expected one of #{values.all_values}"
    end

    instance_variable_set("@#{attribute_name}", value)
  end

  enumerated_type_metadata[attribute_name] = {
    original_values_source:,
    values_source:,
    values:
  }
end