Module: Minfraud::Enum::ClassMethods

Defined in:
lib/minfraud/enum.rb

Instance Method Summary collapse

Instance Method Details

#enum_accessor(attribute, assignable_values) ⇒ Object

Creates a set of methods for enum-like behaviour of the attribute

Parameters:

  • attribute (Symbol) —

    attribute name

  • assignable_values (Array) —

    a set of values which are permitted



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# File 'lib/minfraud/enum.rb', line 17

def enum_accessor(attribute, assignable_values)
  mapping[attribute] = assignable_values.map(&:intern)

  self.class.instance_eval do
    define_method("#{attribute}_values") { mapping[attribute] }
  end

  self.class_eval do
    define_method("#{attribute}") { instance_variable_get("@#{attribute}") }
    define_method "#{attribute}=" do |value|
      raise NotEnumValueError,  'Value is not permitted' if value && !self.class.mapping[attribute].include?(value.intern)
      instance_variable_set("@#{attribute}", value&.intern)
    end
  end
end

#mapping ⇒ Hash

Returns a hash with in the following format: attribute_name => permitted_values

Returns:

  • (Hash) —

    mapping



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# File 'lib/minfraud/enum.rb', line 10

def mapping
  @mapping ||= {}
end