`validates_inclusion_of` and `validates_exclusion_of` now accept

`:within` option as alias of `:in` as documented.

Fix #7118

1 files changed, 6 insertions, 3 deletions

diff --git a/activemodel/lib/active_model/validations/clusivity.rb b/activemodel/lib/active_model/validations/clusivity.rb
index 676457ec0f..7f88293220 100644
--- a/activemodel/lib/active_model/validations/clusivity.rb
+++ b/activemodel/lib/active_model/validations/clusivity.rb
@@ -7,7 +7,7 @@ module ActiveModel
                       "and must be supplied as the :in option of the configuration hash"
 
       def check_validity!
-        unless [:include?, :call].any?{ |method| options[:in].respond_to?(method) }
+        unless [:include?, :call].any?{ |method| range.respond_to?(method) }
           raise ArgumentError, ERROR_MESSAGE
         end
       end
@@ -15,11 +15,14 @@ module ActiveModel
     private
 
       def include?(record, value)
-        delimiter = options[:in]
-        exclusions = delimiter.respond_to?(:call) ? delimiter.call(record) : delimiter
+        exclusions = range.respond_to?(:call) ? range.call(record) : range
         exclusions.send(inclusion_method(exclusions), value)
       end
 
+      def range
+        @range ||= options[:in] || options[:within]
+      end
+
       # In Ruby 1.9 <tt>Range#include?</tt> on non-numeric ranges checks all possible values in the
       # range for equality, so it may be slow for large ranges. The new <tt>Range#cover?</tt>
       # uses the previous logic of comparing a value with the range endpoints.