ruby-on-rails - (设计)更新时需要密码，即使它是空白的

Question

我的用户模型无法保存，因为 password 和 password_confirmation 不能为空。这发生在:

• 在 edit_user_registration 上更新用户并将密码和密码确认留空。这是我第一次注意到的地方
• 在控制台上，加载对象并调用保存后立即执行。

如果需要 password_required，Devise 将验证密码是否存在？

  validates_presence_of     :password, :if => :password_required?

  def password_required?
    !persisted? || !password.nil? || !password_confirmation.nil?
  end

这是我的 Rails 控制台输出:

  Loading development environment (Rails 3.2.11)
  1.9.3p374 :001 > u = User.last
    User Load (1.0ms)  SELECT "users".* FROM "users" ORDER BY "users"."id" DESC LIMIT 1
   => #<User id: 9, name: "Name", email: "name@example.com", encrypted_password: "$2a$10$oCL2K0nEa8LxaMGuC1oyNOuwIHk8l/IOW.AylGcWTYj3...", reset_password_token: nil, reset_password_sent_at: nil, remember_created_at: nil, sign_in_count: 2, current_sign_in_at: "2013-02-06 20:56:14", last_sign_in_at: "2013-02-06 20:52:01", current_sign_in_ip: "127.0.0.1", last_sign_in_ip: "127.0.0.1", confirmation_token: nil, confirmed_at: "2013-02-07 22:04:01", confirmation_sent_at: "2013-02-07 22:03:25", unconfirmed_email: nil, authentication_token: nil, created_at: "2013-02-06 20:52:00", updated_at: "2013-02-07 22:04:31"> 
  1.9.3p374 :002 > u.save
     (0.2ms)  BEGIN
     (0.2ms)  ROLLBACK
   => false 
  1.9.3p374 :003 > u.errors
   => #<ActiveModel::Errors:0x007f832c04f090 @base=#<User id: 9, name: "Name", email: "name@example.com", encrypted_password: "$2a$10$oCL2K0nEa8LxaMGuC1oyNOuwIHk8l/IOW.AylGcWTYj3...", reset_password_token: nil, reset_password_sent_at: nil, remember_created_at: nil, sign_in_count: 2, current_sign_in_at: "2013-02-06 20:56:14", last_sign_in_at: "2013-02-06 20:52:01", current_sign_in_ip: "127.0.0.1", last_sign_in_ip: "127.0.0.1", confirmation_token: nil, confirmed_at: "2013-02-07 22:04:01", confirmation_sent_at: "2013-02-07 22:03:25", unconfirmed_email: nil, authentication_token: nil, created_at: "2013-02-06 20:52:00", updated_at: "2013-02-07 22:04:31">, @messages={:password=>["can't be blank"], :password_confirmation=>["can't be blank"]}> 
  1.9.3p374 :004 > !u.persisted? || !u.password.nil? || !u.password_confirmation.nil?
   => false

感谢您的帮助!

Answer 1

感谢@rainkinz，我回到了基础(用户模型)并仔细观察。我发现我正在导入的模块添加了一个额外的

validates :email, :password, :password_confirmation, presence: true

我可以通过在控制台中运行来看到这一点:

User.validators

 ...
 #<ActiveModel::Validations::PresenceValidator:0x007fb80fbcd260
   @attributes=[:email, :password, :password_confirmation],
   @options={}>,
 ...

这与设计放入的验证不同，后者包含:

@options={:if=>:password_required?}>,

删除那些解决了问题。感谢您的帮助!