I know that there is an ActiveModel Validator class
which is used for the class level validation macros.
But I didn’t find a an ActiveRecord Validator class.
From my understanding in Rails 3, validations have been moved into
ActiveModel to leave ActiveRecord as an ORM.
So now I see this Rails 3 code in a Rails 3 book and get confused:
Class EmailValidator < ActiveRecord::Validator
def validate()
email_field = options[:attr]
record.errors[email_field] << is not valid unless
record.send(email_field) =~ /^[a-z]$/
end
end
class Account < ActiveRecord::Base
validates_with EmailValidator, :attr => :email
end
Where is this ActiveRecord::Validator coming from? Also why does it
exist when you can simply do this in ActiveModel:
class RandomlyValidator < ActiveModel::Validator
def validate(record)
record.errors[:base] << FAIL #1 unless first_hurdle(record) #add
error messages to the whole object instead of a particular attribute
using the :base key.
record.errors[:base] << Fail #2 unless second_hurdle(record)
record.errors[:base] << Fail #3 unless third_hurdle(record)
end
private
def first_hurdle(record)
rand > 0.3
end
def second_hurdle(record)
rand > 0.6
end
def third_hurdle(record)
rand > 0.9
end
end
class Report < ActiveRecord::Base
validates_with RandomlyValidator
end
thanks for response