require "active_support/core_ext/range" module ActiveModel module Validations module Clusivity #:nodoc: ERROR_MESSAGE = "An object with the method #include? or a proc, lambda or symbol is required, " \ "and must be supplied as the :in (or :within) option of the configuration hash" def check_validity! unless delimiter.respond_to?(:include?) || delimiter.respond_to?(:call) || delimiter.respond_to?(:to_sym) raise ArgumentError, ERROR_MESSAGE end end private def include?(record, value) members = if delimiter.respond_to?(:call) delimiter.call(record) elsif delimiter.respond_to?(:to_sym) record.send(delimiter) else delimiter end members.send(inclusion_method(members), value) end def delimiter @delimiter ||= options[:in] || options[:within] end # In Ruby 2.2 Range#include? on non-number-or-time-ish ranges checks all # possible values in the range for equality, which is slower but more accurate. # Range#cover? uses the previous logic of comparing a value with the range # endpoints, which is fast but is only accurate on Numeric, Time, Date, # or DateTime ranges. def inclusion_method(enumerable) if enumerable.is_a? Range case enumerable.first when Numeric, Time, DateTime, Date :cover? else :include? end else :include? end end end end end