## app/models/person.rb - A
class Person < ActiveRecord::Base
  validates_presence_of :first_name, :last_name, :status, :training_id
  def before_save
    if self.email.empty?
      self.email=first_name.downcase+"."+self.last_name.downcase+"@"+MAILDOMAIN
    end
    if self.email =~ /[[:blank:]]+/
      self.email_needs_check = true
    end
  end
  belongs_to :training
end

## app/models/person.rb - B
class Person < ActiveRecord::Base
  validates_presence_of :first_name, :last_name, :status, :training_id
  def before_save
   if self.email
     if self.email =~ /([[:alnum:]\_\.\-])+\@(([[:alnum:]\-])+\.)+([:alpha:]{2,4})/
       self.email_needs_check = true
     else
       self.email_needs_check = false
     end
   else
     self.email=first_name.downcase+"."+self.last_name.downcase+"@"+MAILDOMAIN
   end
  end
  belongs_to :training
end