项目需要把 delayed_job 数据库独立出来，创建完新数据库之后，运行RAILS_ENV=production script/delayed_job start无反应，新的 DJ 数据库里能加进去数据，RAILS_ENV=production rake jobs:work能运行，但是会报错说找不到对象，卡了一晚上，谁能帮我看下是哪里写的不对，不胜感激，具体代码如下：

config/initializers/delayed_job_config.rb

Delayed::Job.class_eval do
  establish_connection ActiveRecord::Base.configurations["delayed_job"]
end

database.yml

delayed_job:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: delayed_job
  pool: 5
  username: root
  password: "987654"
  host: localhost

my_job.rb

class MyJob < Struct.new(:episode)
  def perform 
    episode.do_something
  end
end

DJ 的报错信息提示说找不到 episode，Couldn't find Episode with id=1