I’ve been having some trouble getting custom rails validations to work after reading Peter Marklund’s post on the topic. I finally have a configuration that works, and I’m posting it up here because
- I’ve read some random posts and threads about problems with this, and
- Because randomly this configuration seems to stop working for me.
So here it is. (Thanks to Peter for the actual validation technique.)
app/models/listing.rb:
def validate validate_phone('phone') end
lib/iociem/validations.rb:
require 'active_record' module Iociem module Validations def validate_phone(*attributes) error_message = 'is an invalid phone number, must contain at least 5 digits, only the following characters are allowed: 0-9/-()+' attributes.each do |attribute| self.errors.add(attribute, error_message) unless valid_phone?(self.send(attribute)) end end def valid_phone?(number) return true if number.nil? n_digits = number.scan(/[0-9]/).size valid_chars = (number =~ /^[+/-() 0-9]+$/) return n_digits > 5 && valid_chars end end end class ActiveRecord::Base include Iociem::Validations end
EDIT: Yup, and it stopped working.
Undefined method validate_phone for <Listing:0xDEADBEEF>
What the hell? It’s probably about now that I should start looking into actually using the testing parts of Rails.
EDIT 2: I think this works for now. I moved this code to my environment.rb:
class ActiveRecord::Base include Iociem::Validations end