Proofing_oven: candidate model with search

candidate.rb

class Candidate < ActiveRecord::Base

  before_save :denormalize_name

  def self.search(term)
    term.blank? ? Candidate.all : where("full_name like ?", "%#{term}%")
  end

  private

  def denormalize_name
    self.full_name = [first_name, last_name].join(' ')
  end

end