如何在 Rails 中使用 Resque 指定用于所有作业的默认队列? [英] How to specify a default queue to use for all jobs with Resque in Rails?

问题描述

除非另有说明，否则我希望所有入队调用都默认为某个队列，这样它既简单又易于维护.为了指定一个队列，文档说要在类中定义一个变量@queue = X.所以，我尝试执行以下操作，但没有奏效，有什么想法吗?

I want all the enqueue calls to default to a certain queue unless specified otherwise so it's DRY and easier to maintain. In order to specify a queue, the documentation said to define a variable @queue = X within the class. So, I tried doing the following and it didn't work, any ideas?

class ResqueJob
  class << self; attr_accessor :queue end
  @queue = :app
end

class ChildJob < ResqueJob
  def self.perform
  end
end

Resque.enqueue(ChildJob)

Resque::NoQueueError: Jobs must be placed onto a queue.
from /Library/Ruby/Gems/1.8/gems/resque-1.10.0/lib/resque/job.rb:44:in `create'
from /Library/Ruby/Gems/1.8/gems/resque-1.10.0/lib/resque.rb:206:in `enqueue'
from (irb):5

推荐答案

在 ruby​​ 中，类变量不会被继承.这就是为什么 Resque 找不到您的 @queue 变量.

In ruby, class variables are not inherited. That is why Resque can't find your @queue variable.

你应该在你的父类中定义self.queue.Resque 首先检查@queue 是否存在，然后再查找queue 类方法:

You should instead define self.queue in your parent class. Resque first checks for the presence of @queue, but looks secondarily for a queue class method:

class ResqueJob
  def self.queue; :app; end
end

class ChildJob < ResqueJob
  def self.perform; ...; end
end

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