Griddler gem在解析传入的电子邮件时抛出异常

Question

我已经集成了Sendgrid传入的解析Web钩子API，它正确地将电子邮件对象发布到我的rails应用程序中。在应用程序上，我使用griddler来捕获和进一步处理电子邮件数据。但我得到的例外是：

Sent mail to chandan@exmaple.com (77.6ms)
F, [2014-11-14T17:48:05.851336 #24799] FATAL -- :
NoMethodError (undefined method `process' for #<EmailProcessor:0x0000000a2ad5f0>):
  griddler (1.1.0) app/controllers/griddler/emails_controller.rb:19:in `public_send'
  griddler (1.1.0) app/controllers/griddler/emails_controller.rb:19:in `process_email'
  griddler (1.1.0) app/controllers/griddler/emails_controller.rb:4:in `block in create'
  griddler (1.1.0) app/controllers/griddler/emails_controller.rb:3:in `each'
  griddler (1.1.0) app/controllers/griddler/emails_controller.rb:3:in `create'
  actionpack (4.1.4) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.1.4) lib/abstract_controller/base.rb:189:in `process_action'
  actionpack (4.1.4) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (4.1.4) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (4.1.4) lib/active_support/callbacks.rb:113:in `call'

当我在/mailer/email_processor.rb中有流程实例方法时

class EmailProcessor
  def initialize(email)
    @email = email
    puts "initialized Email Processor\n\n\n\n\n\n\n\n" # Should see this line in log
  end

  def process
    user = User.find_by_email(@email.from[:email])
    puts @email.inspect and return if user.blank?

    puts "############### @email = #{@email.inspect}###############\n\n\n\n\n\n\n"
  end
end

下面是config/initializer/griddler.rb

Griddler.configure do |config|
  config.processor_class = EmailProcessor
  config.processor_method = :process
  config.reply_delimiter = '-- REPLY ABOVE THIS LINE --'
  config.email_service = :sendgrid
end

下面是我使用的gem的版本：

#Process incoming mail from sendgrid smtp server
gem 'griddler', "~> 1.1.0"
gem 'griddler-sendgrid', "~> 0.0.1"

这是基于griddler github上可用的文档

有人能帮我解决我在这里缺少的东西吗。另外，为什么我在日志中看不到下面一行呢？

"initialized Email Processor\n\n\n\n\n\n\n\n"

下面是要定义路由的行

mount_griddler

编辑:据我所知，rails不直接添加任何此类类。奇怪的是，我能够在“rails控制台”中看到“EmailProcessor”类可用的“process”方法：

2.1.4 :005 > x = EmailProcessor.new(1)
initialized Email Processor\n\n\n\n\n\n\n\n
 => #<EmailProcessor:0x007fc6ae5aee08 @email=1>
2.1.4 :006 > x.methods
 => [:process, :blank?, :present?, ...
2.1.4 :014 > EmailProcessor.instance_methods(false)
 => [:process]

谢谢

Answer 1

问题是，rails应用程序启动时没有加载EmailProcessor类。在application.rb中添加以下行执行了神奇的操作：

 config.autoload_paths += %W(#{config.root}/app/mailers/email_processor.rb)

注意:每次更改email_processor.rb时，都需要重新启动服务器。

感谢Joel (“格瑞德勒”的作者)回复我的个人邮件并指出问题:)