Module: Trax::Model::Enum::ClassMethods

Defined in:
lib/trax/model/enum.rb

Instance Method Summary collapse

Instance Method Details

#as_enum(enum_name, args, options = {}) ⇒ Object 



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# File 'lib/trax/model/enum.rb', line 26

def as_enum(enum_name, args, options = {})
  options.assert_valid_keys(:prefix, :source, :message)
  options[:message] ||= "Is not a valid value for #{enum_name}"
  options[:prefix] ||= true
  options[:source] ||= enum_name
  enum_values = args.is_a?(Hash) ? args.keys : args
  validation_options = { :in => enum_values, :message => options.extract!(:message) }

  self.validates_inclusion_of(enum_name, validation_options)
  scope_method_name = :"by_#{enum_name}"
  scope_not_method_name = :"by_#{enum_name}_not"

  self.scope scope_method_name, lambda { |*values|
    enum_hash = self.__send__("#{enum_name}".pluralize).hash
    where(enum_name => enum_hash.with_indifferent_access.slice(*values.flatten.compact.uniq).values)
  }
  self.scope scope_not_method_name, lambda { |*values|
    enum_hash = self.__send__("#{enum_name}".pluralize).hash
    where.not(enum_name => enum_hash.with_indifferent_access.slice(*values.flatten.compact.uniq).values)
  }

  super(enum_name, args, options)
end