这就是我最终要做的事情……我希望能够以这种方式对这种做法的利弊进行一些反馈.感觉有点难看,但很容易.基本上,我包括在我的邮件程序中使用回调的功能,将类和方法名称元数据附加到Mail :: Message对象,以便在我的观察者中可以访问它.我通过在Mail :: Message对象上设置实例变量,然后将attr_reader发送到Mail :: Message类来附加它,允许我调用mail.mailer_klass和mail.mailer_action.

我是这样做的,因为我想在邮件发送后记录它,所以我可以得到它发送的确切日期,并知道记录的电子邮件应该已成功发送.

邮件：

class MyMailer < ActionMailer::Base
  default from: "noreply@theapp.com"

  include AbstractController::Callbacks

  # Where I attach the class and method
  after_action :attach_Metadata

  def welcome_note(user)
    @user = user

    mail(subject: "Thanks for signing up!",to: @user.email)
  end

  private

    def attach_Metadata
      mailer_klass = self.class.to_s
      mailer_action = self.action_name

      self.message.instance_variable_set(:@mailer_klass,mailer_klass)
      self.message.instance_variable_set(:@mailer_action,mailer_action)

      self.message.class.send(:attr_reader,:mailer_klass)
      self.message.class.send(:attr_reader,:mailer_action)
    end
end

观察员：

class MailAuditor

  def self.delivered_email(mail)
    if mail.multipart?
      body = mail.html_part.decoded
    else
      body = mail.body.raw_source
    end

    Email.create!(
      sender: mail.from,recipient: mail.to,bcc: mail.bcc,cc: mail.cc,subject: mail.subject,body: body,mailer_klass: mail.mailer_klass,mailer_action: mail.mailer_action,sent_at: mail.date
    )
  end
end

配置/初始化/ mail.rb

ActionMailer::Base.register_observer(MailAuditor)

思考？