Hi - I want to add my own validation to a rails app, and need help
making it global to my app. Basically, the validation makes sure a
number is positive - I found this code on the at
http://snippets.dzone.com/posts/show/822:
module CustomValidations
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
end
I want to use it in my models like any other validation:
class SomeModel < ActiveRecord::Base
validates_positivity_of :some_number, :another_number
end
I saved it in lib/custom_validations.rb, and tried including it in the
top of my environment.rb to extend AR:
include 'custom_validations'
class ActiveRecord::Base
include CustomValidations
end
#.. rest of file
Sadly, this won't work. How do I make rails identify this module and use
it properly?
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