On Jan 12, 2010, at 4:51 PM, Danimal wrote:
Hello!
Has anyone come across a nice, elegant way to handle multiple
validation failures on a single field? For example... in the typical
login, you might have an email field that has three validations: not
blank, less than a max length and matches a format regex. But if I
submit the login/signup form with a blank I get back:
# Email address is too short (minimum is 6 characters)
# Email address should look like an email address.
# Email address can't be blank
I'd rather be able to specify (cleanly and easily) on a model some
kind of order of importance and then only show the first validation
failure for that field.
Thoughts? Advice?
TIA!
-Danimal
These all seem to be aspects of the same thing. If an email looks
like an email address, then it is presumably at least 6 characters ([email protected]
) and thus non-blank.
validates_format_of :email_address,
:with => /\A([...@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i,
:message => 'should look like an email address'
or even some more sophisticated expression. You could toss
in :allow_nil=>false or :allow_blank=>false even though the default
for both is already false.
You could write your own validate() method and take over all the
validation, but that might not be a viable option if there are several
fields with validations.
-Rob
Rob Biedenharn http://agileconsultingllc.com
[email protected]
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