MVC model 2

mvc_model_2.rb

class User < ApplicationRecord
  validates :first_name, presence: true
  validates :last_name, presence: true
  validates :email, presence: true
  validates :token, presence: true
  
  before_create :generate_token
  after_create :send_welcome_email
  
  private
  
  def generate_token
    uri = URI("https://example.com/#{email}")
    response = Net::HTTP.get_response(uri)
    if response.code == '200'
      self.token = JSON.parse(response.body)[:token]
    end
  end
  
  def send_welcome_email
    UserMailer.welcome_message(self).deliver
  end
end