From: laredotornado <laredotornado@...>
Date: 2008-02-02T01:29:58+09:00
Subject: Why is ruby ignoring allow_nil?

Hi,

In my user model, I'm want to validate a field only if the field is
not empty.  So I'm trying

validates_format_of :work_phone, :with => %r{^(\+\d)*\s*(\(\d{3}\)\s*)*
\d{3}(-{0,1}|\s{0,1})\d{2}(-{0,1}|\s{0,1})\d{2}$}, :allow_nil => true

but if my field, work_phone, is empty, I get the error that the format
is not valid.  What is wrong with the above? - Dave