ruby-on-rails - 具有多个SMTP服务器的Rails ActionMailer

Question

我需要在Rails应用程序中使用两个不同的smtp服务器。看来ActionMailer的构造方式，不可能有不同的smtp_settings用于
一个子类。每当发送邮件时，我都可以重新加载每个邮件程序类的smtp设置，但这会使ExceptionNotifier插件困惑，这是我无法控制的(除非我也将其弄乱了)。有没有人有类似的解决方案/插件
这个？

理想情况下，我想拥有

class UserMailer < ActionMailer::Base; end

然后在environment.rb中设置

ActionMailer::Base.smtp_settings = standard_smtp_settings
UserMailer.smtp_settings = user_smtp_settings

因此，我的大多数邮件发送器(包括ExceptionNotifier)都会采用默认设置，但UserMailer将使用付费中继服务。

Answer 1

根据Oreilly的文章，我想出了我在这里写的解决方案:
http://transfs.com/devblog/2009/12/03/custom-smtp-settings-for-a-specific-actionmailer-subclass

以下是相关代码:

class MailerWithCustomSmtp < ActionMailer::Base
  SMTP_SETTINGS = {
    :address => "smtp.gmail.com",
    :port => 587,
    :authentication => :plain,
    :user_name => "custom_account@transfs.com",
    :password => 'password',
  }

  def awesome_email(bidder, options={})
     with_custom_smtp_settings do
        subject       'Awesome Email D00D!'
        recipients    'someone@test.com'
        from          'custom_reply_to@transfs.com'
        body          'Hope this works...'
     end
  end

  # Override the deliver! method so that we can reset our custom smtp server settings
  def deliver!(mail = @mail)
    out = super
    reset_smtp_settings if @_temp_smtp_settings
    out
  end

  private

  def with_custom_smtp_settings(&block)
    @_temp_smtp_settings = @@smtp_settings
    @@smtp_settings = SMTP_SETTINGS
    yield
  end

  def reset_smtp_settings
    @@smtp_settings = @_temp_smtp_settings
    @_temp_smtp_settings = nil
  end
end