Question

我希望我们的登台服务器发送的所有电子邮件都在主题中以“[STAGING]”开头。使用ActionMailer在Rails 3.2中有一种优雅的方法吗？

Answer 1

以下是我根据ActionMailer Interceptor使用an existing answer找到的优雅解决方案。

# config/initializers/change_staging_email_subject.rb
if Rails.env.staging?
  class ChangeStagingEmailSubject
    def self.delivering_email(mail)
      mail.subject = "[STAGING] " + mail.subject
    end
  end
  ActionMailer::Base.register_interceptor(ChangeStagingEmailSubject)
end

Answer 2

这适用于Rails 4.x

class UserMailer < ActionMailer::Base
  after_action do
    mail.subject.prepend('[Staging] ') if Rails.env.staging?
  end

  (...)
end

Answer 3

实际上，继承并不像它那样优雅。

class OurNewMailer < ActionMailer::Base

  default :from => 'no-reply@example.com',
          :return_path => 'system@example.com'

  def subjectify subject
    return "[STAGING] #{subject}" if Rails.env.staging?
    subject
  end
end

然后你可以从你的每个邮件继承。

# modified from the rails guides
class Notifier < OurNewMailer

  def welcome(recipient)
    @account = recipient
    mail(:to => recipient.email_address_with_name, :subject => subjectify("Important Message"))
  end
end

我认为这不像你所希望的那样干净，但这会使它干涸。

在暂存环境中覆盖ActionMailer主题

3 个答案: