Signed-off-by: NJosé Valim <jose.valim@gmail.com>

class Person < ActiveRecord::Base
  include MyValidators

  validates :name, :presence => true, :uniqueness => true, :length => { :maximum => 100 }
  validates :email, :presence => true, :email => true
end

[#3058 status:resolved]
Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Move validations in ActiveModel to validators, however all validatity checks are still in the class method.

Validator is simply sent to validate method. However, the API needs to change, so validate accepts a record.

Changed ActiveRecord to use new callbacks and speed up observers by only notifying events that are actually being consumed.
Signed-off-by: NJoshua Peek <josh@joshpeek.com>

[#2630 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>