ruby-on-rails - 升级到 Rails 3.2.2 : How to solve the 'undefined method for Syck::DomainType' error related to the Delayed Job gem?

Question

我正在从 3.1.0 开始运行 Ruby on Rails 3.2.2。我有问题

undefined method send_register_email\' for #<Syck::DomainType:0x0000012d2346b8>\n/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/performable_mailer.rb:6:in perform ...

使用许多其他人尝试解决的 DelayedJob gem:有人成功地解决了这个问题，其他人则没有。如果我尝试了我在网上找到的所有解决方案，我属于后一类。

此时，在我的 Gemfile 中我有:

gem 'rails', '3.2.2'
gem "rake"
...
gem 'delayed_job_active_record'
...

在升级 Rails 之前，在我的 Gemfile 中我有:

gem 'rails', '~> 3.1.0'
gem "rake"
...
# I also used the following statement by running Rails 3.2.2 but it didn't work.
gem 'delayed_job'
...

为了发送电子邮件消息，在我的 Controller 中，我使用以下代码链接:

::Users::Mailer.delay.send_register_email(@user)

在我的 APPLICATION_ROOT/app/mailers/users/mailer.rb 文件中我有:

class Users::Mailer < ActionMailer::Base
  ...

  def send_register_email(user)
    ...
  end
end

在更新到 Rails 3.2.2 之前，一切正常。现在我在介绍文本中得到了上面提到的错误。 如何尝试解决延迟作业问题？

---

我注意到在与 delayed_job_active_record gem 相关的数据库表中应该有一个名为“queue”的列(有关更多信息，请参阅 official documentation 中的“详细信息”部分)。但是，由于我使用的是 gem 'delayed_job'，它存在于该数据库表中。 会不会是这个问题？

---

我注意到的另一件事如下(但我认为目前这不是问题所在):

$ rake jobs:work
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /<ABSOLUTE_PATH>/Rakefile:7)
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/01/04/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /<ABSOLUTE_PATH>/Rakefile:7)
[Worker(host:<MY_USER>.local pid:76826)] Starting job worker

---

---

---

以下是 DelayedJob last_error 数据库表列中的内容:

{undefined method `send_register_email' for #<Syck::DomainType:0x0000010228a840>
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/performable_mailer.rb:6:in `perform'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/backend/base.rb:94:in `block in invoke_job'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/backend/base.rb:91:in `invoke_job'
/<ABSOLUTE_PATH>/.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:162:in `block (2 levels) in run'
/<ABSOLUTE_PATH>/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:58:in `timeout'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:162:in `block in run'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:161:in `run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:218:in `block in reserve_and_run_one_job'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:218:in `reserve_and_run_one_job'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:146:in `block in work_off'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:145:in `times'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:145:in `work_off'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:117:in `block (4 levels) in start'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/benchmark.rb:310:in `realtime'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:116:in `block (3 levels) in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:113:in `block (2 levels) in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:112:in `loop'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:112:in `block in start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/plugins/clear_locks.rb:7:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/plugins/clear_locks.rb:7:in `block (2 levels) in <class:ClearLocks>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `block (2 levels) in add'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:60:in `block in initialize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:78:in `block in add'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:65:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/lifecycle.rb:38:in `run_callbacks'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/worker.rb:111:in `start'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/gems/delayed_job-3.0.1/lib/delayed/tasks.rb:9:in `block (2 levels) in <top (required)>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/<ABSOLUTE_PATH>//.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in `load'
/<ABSOLUTE_PATH>//.rvm/gems/ruby-1.9.2-p290/bin/rake:19:in `<main>'

Answer 1

如果您正在使用 bundler ，请尝试在脚本或 rake 任务前加上“bundle exec”前缀，例如

bundle exec script/delayed_job -n 2 start 

它帮了我们的忙。