blocks|key|5181456|text|您是否按照自述文件中的安装说明进行操作？https://github.com/collectiveidea/delayed_job|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5181457|将此代码添加到您的gemfile中：|5181458|gem+'delayed_job_active_record'|code-block|syntax|javascript|5181459|然后在控制台上运行以下命令：|5181460|$+rails+generate+delayed_job:active_record
$+rake+db:migrate|5181461|您需要在数据库中创建延迟的作业表(假设您使用的是活动记录)。|5181462|对于Rails3，您需要做的就是将其包含在gemfile中，运行上面的代码来创建表并迁移数据库，然后重新启动服务器并开始！|5181463|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/collectiveidea/delayed_job^0|K|19|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|17|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|C|$]]|$1|Q|3|R|5|6|7|19|8|@]|9|@]|C|$]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

Did you follow the installation instructions on the README file? <a href="https://github.com/collectiveidea/delayed_job">https://github.com/collectiveidea/delayed_job</a>

Add this to your gemfile:

<pre><code>gem 'delayed_job_active_record'
</code></pre>

and then run this at the console:

<pre><code>$ rails generate delayed_job:active_record
$ rake db:migrate
</code></pre>

You need to create the delayed jobs table in the database (this assumes you're using active record).

For Rails 3, all you need to do is include it in the gemfile, run that code above to create the table and migrate the database, then restart your server and go!

blocks|key|3111434|text|不久前我也在为同样的问题而苦苦挣扎。我在delayed_job上关注ryan+bates的截屏视频，得到了同样的错误'uninitialized+constant+Delayed::Job‘。在截屏视频中，ryan创建了一个名为mailing_job.rb的文件(位于lib文件夹下)，其中包含delayed_job+perform方法，该方法允许您使用enqueue方法。在做了一些研究之后，我发现Rails3不会自动将lib文件夹文件加载到你的应用程序中。(不完全确定)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3111435|尝尝这个|3111436|在使用以下代码的控制器中：|3111437|"Delayed::Job.enqueue+do_it(),+0,+1.minutes.from_now.getutc"+|code-block|syntax|javascript|3111438|尝试像这样请求该文件。|3111439|require+'mailing_job'
class+AssetsController+<+ApplicationController
++++def+some_method
++++++++Delayed::Job.enqueue+do_it(),+0,+1.minutes.from_now.getutc
++++end
end|3111440|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

i was struggling a while back with the same problem. i was following ryan bates screencast on delayed_job and got the same error 'uninitialized constant Delayed::Job'. In the screencast ryan creates a file called mailing_job.rb(located under lib folder) with the delayed_job perform method inside, which allows you to use the enqueue method. After doing some research i found that rails 3 does not automatically load the lib folder files into your app.(not entirely sure) 

Try this 
In your controller where you use this: 

<pre><code>"Delayed::Job.enqueue do_it(), 0, 1.minutes.from_now.getutc" 
</code></pre>

Try to require the file like this.
 

<pre><code>require 'mailing_job'
class AssetsController &lt; ApplicationController
 def some_method
 Delayed::Job.enqueue do_it(), 0, 1.minutes.from_now.getutc
 end
end
</code></pre>

blocks|key|3396437|text|以防万一，如果仍然没有应答，请检查下面的链接|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3396438|http://www.pipetodevnull.com/past/2010/4/14/uninitialized_constant_delayedjob/|offset|length|3396439|编辑:替代，只需升级到最新版本-+2.1|3396440|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|26|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

Just in case, if this is still unanswered, check the below link

<a href="http://www.pipetodevnull.com/past/2010/4/14/uninitialized_constant_delayedjob/" rel="nofollow">http://www.pipetodevnull.com/past/2010/4/14/uninitialized_constant_delayedjob/</a>

edit: Alternative, just upgrade to the latest version - 2.1

blocks|key|3111481|text|如果您已经升级到delayed_job版本>=3，则需要添加以下内容(假设您使用的是ActiveRecord)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3111482|#+Gemfile
gem+'delayed_job_active_record'|code-block|syntax|javascript|3111483|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you've upgraded to delayed_job version >=3 you'll need to add this (presuming you're using ActiveRecord):

<pre><code># Gemfile
gem 'delayed_job_active_record'
</code></pre>

blocks|key|3396466|text|版本变更可能性：如果您通过非锁定包从gem的2.1.x版本跳转到3.x版本，您可能会遇到类似的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3396467|entityMap^0|0|7|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

Version change possibility : if you jump from the 2.1.x to the 3.x version of the gem via a non locked down bundle, you may have a similar issue.

blocks|key|3111536|text|我在引擎中使用了延迟作业(因此gem是在.gemspec中指定的，而不是在gem文件中指定的)，并且得到相同的错误。我发现我可以通过使用以下命令来解决问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3111537|require+'delayed_job_active_record'++#+fixes+problem|code-block|syntax|javascript|3111538|而不是|3111539|require+'delayed_job'++++++++++++++++#+doesn't|3111540|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I'm using delayed job within an engine (so the gem is specified in a .gemspec rather than Gemfile) and was getting the same error. I found that I could solve the problem by using:

<pre><code>require 'delayed_job_active_record' # fixes problem
</code></pre>

rather than

<pre><code>require 'delayed_job' # doesn't
</code></pre>

I've added the delayed_job gem to my gemfile and installed correctly but when I try to run the following line:

<pre><code>Delayed::Job.enqueue do_it(), 0, 1.minutes.from_now.getutc
</code></pre>

I get the error 'uninitialized constant Delayed::Job'

Can somebody explain what i need to do here? I've tried running 'rake jobs:work' beforehand but it also returns the 'uninitialized constant Delayed::Job' error. Additionally, I've added "require 'delayed_job'" to the file (application.rb) without much luck.

uninitialized constant Delayed::Job

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我已经将delayed_job gem添加到我的gem文件中并正确安装，但当我尝试运行以下代码行时：Delayed::Job.enqueue do_it(), 0, 1.minutes.from_now.getutc我收到错误'uninitialized constant Delayed::Job‘有人能解释一下我需要...

问未初始化的常量延迟：：作业
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