skill-assessment-app/app/models/user.rb

class User < ApplicationRecord
  has_secure_password
  has_many :candidates, foreign_key: "recruiter_id"

  validates :email, presence: true, uniqueness: true
  validates :name, presence: true
  validates :role, presence: true
  validates :reset_token, uniqueness: true, allow_nil: true

  def setup_reset
    gen_reset_token
    save
  end

  private

    def gen_reset_token
      loop do
        self[:reset_token] = SecureRandom.urlsafe_base64(10)
        self[:reset_timestamp] = DateTime.now
        break unless User.exists?(reset_token: self[:reset_token])
      end
    end
end