使用带有 Resque 后台作业的控制器方法

Question

我在 Rails 4 上使用带有 Redis 的 Resque。

我的问题：如何在后台作业中使用当前在 application_controller 中定义的控制器方法？

这是我定义的当前方法：

def push_to_google(token, message)
  if token.present?
    gcm = GCM.new("843jf9384fj839f848j890fj3")
    registration_ids = ["#{token}"] # an array of one or more client registration tokens
    options = {data: {notification: "#{message}"}}
    response = gcm.send(registration_ids, options)
  end
end

我想在 delay_notifications 中定义的后台作业中使用它：

class DelayedNotifications
  @queue = :notifications_queue

  def self.perform(registration_id, user_name)
    push_to_google(registration_id, "New message from #{user_name}.")
  end
end

当然，我的工作目前因此错误而失败：

undefined method 'push_to_google' for DelayedNotifications:Class

提前感谢您的帮助。

Answer 1

将push_to_google 提取（移动）到ApplicationHelper，并将ApplicationHelper 包含在您的ApplicationController 和DelayedNotifications 中。

更改后，您的application_helper.rb 应为：

module ApplicationHelper
  # other methods

  def push_to_google(token, message)
    if token.present?
      gcm = GCM.new("843jf9384fj839f848j890fj3")
      registration_ids = ["#{token}"] # an array of one or more client registration tokens
      options = {data: {notification: "#{message}"}}
      response = gcm.send(registration_ids, options)
    end
  end
end 

application_controller.rb:

class ApplicationController < ActionController::Base
  include ApplicationHelper

end

delayed_notifications.rb:

class DelayedNotifications
  include ApplicationHelper

  @queue = :notifications_queue

  def self.perform(registration_id, user_name)
    push_to_google(registration_id, "New message from #{user_name}.")
  end
end