Как при валидации полей в модели Rails получить данные об ошибках?

class Person < ActiveRecord::Base
  validates :name, presence: true, length: { minimum: 3 }
end
 
person = Person.new
person.valid? # => false
person.errors.messages
 # => {:name=>["can't be blank", "is too short (minimum is 3 characters)"]}
 
person = Person.new(name: "John Doe")
person.valid? # => true
person.errors.messages # => {}