#User未定义的局部变量或方法' confirmed_at'

I am using Rails 3. There is a possible duplicate here. But it did not solve my problem, neither did any other solution.

我正在使用Rails 3。这里可能有一个副本。但这并没有解决我的问题，也没有其他的解决办法。

My migration is as follows

我的迁移如下。

class AddConfirmableToDevise < ActiveRecord::Migration
  def change
    change_table(:users) do |t| 
      t.confirmable 
    end
    add_index  :users, :confirmation_token, :unique => true 
  end
end

I do have devise :confirmable added in User model.

我确实设计了:在用户模型中添加了可确认的。

My rake db:migrate gives no output. and my sign up page gives the error:

我的rake db:migrate没有输出。我的注册页面出现了错误:

undefined local variable or method 'confirmed_at' for #User

Anybody has a clue?

有人有线索吗?

5 个解决方案

#1

Ok. I solved it. The migration is outdated. Generate new migration with same code but another name.

好的。我解决它。迁移是过时的。使用相同的代码生成新的迁移，但是使用另一个名称。

1.Run command:

1。运行命令:

rails g migration add_confirmable_to_devise_v1

2.In the migration file:

2。在迁移文件:

class AddConfirmableToDeviseV1 < ActiveRecord::Migration
  def change
    change_table(:users) do |t| 
      t.confirmable 
    end
    add_index  :users, :confirmation_token, :unique => true 
  end
end

3.Then

3.然后

rake db:migrate

#2

As of the latest devise, you just need to remove comments from the following lines on the devise users migration.. (2013....._devise_create_users.rb)

对于最新的设计，您只需要从设计用户迁移的下面几行删除注释。(2013 ..... _devise_create_users.rb)

  # Confirmable
  t.string   :confirmation_token
  t.datetime :confirmed_at
  t.datetime :confirmation_sent_at
  t.string   :unconfirmed_email # Only if using reconfirmable

#3

To tie in @DevDude's answer with the accepted answer - if you already have an existing Users model to which you need to add confirmable, the full migration code for the version of Devise current as of 4/14 is:

要将@DevDude的答案与已接受的答案联系起来——如果您已经有一个需要添加可确认的现有用户模型，那么4/14版本的总体设计电流迁移代码是:

class AddConfirmableToDeviseV1 < ActiveRecord::Migration
  def change
    change_table(:users) do |t|
       # Confirmable
       t.string   :confirmation_token
       t.datetime :confirmed_at
       t.datetime :confirmation_sent_at
       t.string   :unconfirmed_email # Only if using reconfirmable
     end
     add_index  :users, :confirmation_token, :unique => true 
   end
end

#4

Note for myself. Someone might find it helpful: What we need is 2 commands below:

注意自己。有人可能会觉得这很有帮助:我们需要以下两个命令:

    rake db:migrate:reset 
    rake db:reset

Voila! It works!

瞧!它的工作原理!

#5

I'm using Mongoid and got this same error. I added these fields and got rspec to go green on my 16 examples.

我使用了Mongoid，得到了同样的错误。我添加了这些字段，并在我的16个例子中得到了rspec。

field :confirmation_token,   :type => String
field :confirmed_at,         :type => Time
field :confirmation_sent_at, :type => Time
field :unconfirmed_email,    :type => String

#1