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无法定义'database_authenticatable'方法，错误来自于#<ActiveRecord::ConnectionAdapters::TableDefinition:0x9dee690>。

ruby-on-rails-3activerecordruby-on-rails-3.1deviseactiveadmin
26

我正在使用Active Admin gem为基于Quiz的小应用程序。但是当我执行rake db:migrate时，会产生错误。以下是该命令的跟踪：

$ rake db:migrate RAILS_ENV=production --trace
** Invoke db:migrate (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:load_config (first_time)
** Invoke rails_env (first_time)
** Execute rails_env
** Execute db:load_config
** Execute db:migrate
==  DeviseCreateAdminUsers: migrating =========================================
-- create_table(:admin_users)
rake aborted!
An error has occurred, all later migrations canceled:

undefined method `database_authenticatable' for #<ActiveRecord::ConnectionAdapters::TableDefinition:0x9dee690>
/home/users/Documents/Quiz/db/migrate/20120509055635_devise_create_admin_users.rb:4:in `block in change'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/connection_adapters/abstract/schema_statements.rb:160:in `create_table'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/connection_adapters  /abstract_mysql_adapter.rb:432:in `create_table'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:466:in `block in method_missing'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:438:in `block in say_with_time'
/home/users/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/benchmark.rb:295:in `measure'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:438:in `say_with_time'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:458:in `method_missing'
/home/users/Documents/Quiz/db/migrate/20120509055635_devise_create_admin_users.rb:3:in `change'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:407:in `block (2 levels) in migrate'
/home/users/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/benchmark.rb:295:in `measure'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:407:in `block in migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:119:in `with_connection'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:389:in `migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:528:in `migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:720:in `block (2 levels) in migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:777:in `call'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:777:in `ddl_transaction'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:719:in `block in migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:700:in `each'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:700:in `migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:570:in `up'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/migration.rb:551:in `migrate'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/activerecord-3.2.3/lib/active_record/railties/databases.rake:153:in `block (2 levels) in <top (required)>'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/home/users/.rvm/rubies/ruby-1.9.2-p318/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/home/users/.rvm/gems/ruby-1.9.2-p318/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/home/users/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `load'
/home/users/.rvm/gems/ruby-1.9.2-p318/bin/rake:19:in `<main>'
Tasks: TOP => db:migrate

以下是我的GemFile文件：
source 'https://rubygems.org'

gem 'rails', '3.2.3'

# Bundle edge Rails instead:
# gem 'rails', :git => 'git://github.com/rails/rails.git'

gem 'mysql2'
gem 'devise'
gem 'activeadmin', :git => 'https://github.com/gregbell/active_admin.git'
gem 'therubyracer'
gem 'formtastic'
gem 'haml'
gem 'paperclip'

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'

  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', :platform => :ruby

  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

20120509055635_devise_create_admin_users.rb的内容如下：

class DeviseCreateAdminUsers < ActiveRecord::Migration
  def change
    create_table(:admin_users) do |t|
      t.database_authenticatable :null => false
      t.recoverable
      t.rememberable
      t.trackable

      # t.encryptable
      # t.confirmable
      # t.lockable :lock_strategy => :failed_attempts, :unlock_strategy => :both
      # t.token_authenticatable


      t.timestamps
    end

    # Create a default user
    AdminUser.create!(:email => 'admin@example.com', :password => 'password', :password_confirmation => 'password')

    add_index :admin_users, :email,                :unique => true
    add_index :admin_users, :reset_password_token, :unique => true
    # add_index :admin_users, :confirmation_token,   :unique => true
    # add_index :admin_users, :unlock_token,         :unique => true
    # add_index :admin_users, :authentication_token, :unique => true
  end

end

我搜索了上述问题并找到了这个，但这并没有帮助我解决问题。我到处都只能找到这个解决方案。 有人之前遇到过这个问题吗？如果有，你是如何处理的？对此的任何帮助将不胜感激。谢谢。
5个回答
43

我在部署到新的分段服务器时，遇到了我的现有应用程序中的这个问题。

最终原因是 Devise gem 已经更新到2.1版本，而我没有正确地修复迁移以使其与新版本兼容。

确保阅读他们在wiki上关于2.1版本迁移的文档 - https://github.com/plataformatec/devise/wiki/How-To:-Upgrade-to-Devise-2.1

此外，请务必仔细阅读如何正确调整现有迁移的文档 - https://github.com/plataformatec/devise/wiki/How-To:-Upgrade-to-Devise-2.0-migration-schema-style

13

我遇到过这个问题两次，并且有一个非常简单的解决方案 - 而不是使用数据库迁移，请运行以下命令：

heroku run rake db:create 
# optionally with --app your_apps_name if you have multiple apps.

那么：

rake db:schema:load
rake db:create rake db:schema:load这两个命令对我很有效。 - leodotcloud
1
这会导致迁移出现问题。可能不是一个好主意。 - eagspoo
这会在什么时候成为一个问题？ - Jwan622
这解决了我在一个传统应用程序上创建测试数据库时遇到的问题（是的，上帝帮助我度过这个难关！） - ThorTL67
如果您错误地运行了rake db:schema:load命令，但仍想运行迁移，请运行rake db:drop:all，然后运行rake db:create:all，最后再次运行rake db:migrate。 - Florent Roques
8

我刚刚遇到了一个我认为是同样的问题，我更新了我的gem并删除了我的数据库，后来我收到了一个非常相似的消息，然后我创建了一个新的Rails应用程序进行比较，结果发现迁移文件已经改变，现在包括列而不是调用方法。

希望这可以帮到你。

祝好！

谢谢，伙计。搞定了。问题出在迁移文件上，列名应该使用 devise 方法名。 - lucifer
1
请将迁移代码放置在这个答案中。 - baash05
4
2

从我的声望可以看出我是一个新手。John Kamuchau是正确的，您需要根据您的版本更改xxxx_devise_create_users.rb迁移。

例如，我刚刚将Rails 3.2更新到4.2并相应地更新了Devise，我不得不更改已弃用的-

t.database_authenticatable :null => false

for -

## Database authenticatable
t.string :email,              null: false, default: ""
t.string :encrypted_password, null: false, default: ""

虽然这是一个老问题，但希望如果有人来寻找答案，这篇文章能对他们有所帮助。

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