# File lib/dm-core/associations/many_to_one.rb, line 202 def initialize(name, source_model, target_model, options = {}) if options.key?(:nullable) raise ":nullable is deprecated, use :required instead (#{caller[2]})" end @required = options.fetch(:required, true) @key = options.fetch(:key, false) @unique = options.fetch(:unique, false) target_model ||= DataMapper::Inflector.camelize(name) options = { :min => @required ? 1 : 0, :max => 1 }.update(options) super end