Module: ActiveRecord::Validations::ClassMethods

Defined in:
lib/validations.rb

Instance Method Summary collapse

Instance Method Details

#validates_nullability_of(*attr_names) ⇒ Object

NOTE: template for this method borrowed from validates_presence_of method in Rails



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# File 'lib/validations.rb', line 22

def validates_nullability_of(*attr_names)
  configuration = { :message => ActiveRecord::Errors.default_error_messages[:null], :on => :save }
  configuration.update(attr_names.pop) if attr_names.last.is_a?(Hash)

  # can't use validates_each here, because it cannot cope with nonexistent attributes,
  # while errors.add_on_empty can
  attr_names.each do |attr_name|
    send(validation_method(configuration[:on])) do |record|
      unless configuration[:if] and not evaluate_condition(configuration[:if], record)
        record.errors.add_on_null(attr_name,configuration[:message])
      end
    end
  end
end