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class User < ActiveRecord::Base
attr_accessor :password
EMAIL_REGEX = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i
validates :username, :presence => true, :uniqueness => true, :length => { :in => 3..20 }
validates :email, :presence => true, :uniqueness => true, :format => EMAIL_REGEX
validates :password, :confirmation => true #password_confirmation attr
validates_length_of :password, :in => 6..20, :on => :create
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