Defining a custom validates in rails

zzzrByte (Tal Ater) — Wed, 19 Oct 2005 21:47:46 GMT

in the model:



class User < ActiveRecord::Base

  require 'validations'



  validates_positive_or_zero :number

  

end

in /lib/validations.rb:



def validates_positive_or_zero(*attr_names)

  configuration = { :message => "Cannot be negative" }

  configuration.update(attr_names.pop) if attr_names.last.is_a?(Hash)

  validates_each attr_names do |m, a, v| m.errors.add(a, configuration[:message]) if v<0 end

end

DZone Snippets: positive code

Defining a custom validates in rails