thaichors3000

class User < ApplicationRecord
  has_one :car
  
  validates :username, presence: true,
  validates :username, length: { maximum: 100 }
  validates :age, numericality: { only_integer: true }
end

class Car < ApplicationRecord  
  enum vehicle_type: %i[suv van compact]

thaichors3000

class BaseForm
  include ActiveModel::Model

  def persisted?
    false
  end

  def save
    return false unless valid?