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-rwxr-xr-xactiverecord/lib/active_record/validations.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb
index 296b486023..4362e08f3a 100755
--- a/activerecord/lib/active_record/validations.rb
+++ b/activerecord/lib/active_record/validations.rb
@@ -414,6 +414,7 @@ module ActiveRecord
# Configuration options:
# * <tt>message</tt> - A custom error message (default is: "must be accepted")
# * <tt>on</tt> - Specifies when this validation is active (default is :save, other options :create, :update)
+ # * <tt>allow_nil</tt> - Skip validation if attribute is nil. (default is true)
# * <tt>accept</tt> - Specifies value that is considered accepted. The default value is a string "1", which
# makes it easy to relate to an HTML checkbox.
# * <tt>if</tt> - Specifies a method, proc or string to call to determine if the validation should