diff options
Diffstat (limited to 'activerecord/lib/active_record')
| -rwxr-xr-x | activerecord/lib/active_record/validations.rb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb index 342a4844cc..6f284242cd 100755 --- a/activerecord/lib/active_record/validations.rb +++ b/activerecord/lib/active_record/validations.rb @@ -520,6 +520,7 @@ module ActiveRecord # * <tt>message</tt> - Specifies a custom error message (default is: "has already been taken") # * <tt>scope</tt> - One or more columns by which to limit the scope of the uniquness constraint. # * <tt>case_sensitive</tt> - Looks for an exact match. Ignored by non-text columns (true by default). + # * <tt>allow_nil</tt> - If set to true, skips this validation if the attribute is null (default is: false) # * <tt>if</tt> - Specifies a method, proc or string to call to determine if the validation should # occur (e.g. :if => :allow_validation, or :if => Proc.new { |user| user.signup_step > 2 }). The # method, proc or string should return or evaluate to a true or false value. |