我有一个需要Rails应用程序中使用两个不同的SMTP服务器。 看来，构造的ActionMailer的方式，它是不可能有一个子类不同smtp_settings。 我可以重新加载每当正在发送的信息的每个邮件类SMTP设置，但搅乱ExceptionNotifier插件，这是我无法控制的（除非我惹它太）。 有没有人有这样的一个解决方案/插件吗？
我非常希望有
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，我大部分的邮件程序，包括ExceptionNotifier将皮卡的默认设置，但UserMailer会使用付费的中继服务。
基于该奥赖利文章中，我提出了我这里写的解决方案： http://transfs.com/devblog/2009/12/03/custom-smtp-settings-for-a-specific-actionmailer-subclass
下面是相关的代码：
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
解决方案为Rails 4.2以上版本：
配置/ secrets.yml：
production:
gmail_smtp:
:authentication: "plain"
:address: "smtp.gmail.com"
:port: 587
:domain: "zzz.com"
:user_name: "zzz@zzz.com"
:password: "zzz"
:enable_starttls_auto: true
mandrill_smtp:
:authentication: "plain"
:address: "smtp.mandrillapp.com"
:port: 587
:domain: "zzz.com"
:user_name: "zzz@zzz.com"
:password: "zzz"
:enable_starttls_auto: true
mailgun_smtp:
:authentication: "plain"
:address: "smtp.mailgun.org"
:port: 587
:domain: "zzz.com"
:user_name: "zzz@zzz.com"
:password: "zzz"
:enable_starttls_auto: true
配置/环境/ production.rb：
config.action_mailer.delivery_method = :smtp
config.action_mailer.smtp_settings = Rails.application.secrets.gmail_smtp
应用程序/邮寄/ application_mailer.rb：
class ApplicationMailer < ActionMailer::Base
default from: '"ZZZ" <zzz@zzz.com>'
private
def gmail_delivery
mail.delivery_method.settings = Rails.application.secrets.gmail_smtp
end
def mandrill_delivery
mail.delivery_method.settings = Rails.application.secrets.mandrill_smtp
end
def mailgun_delivery
mail.delivery_method.settings = Rails.application.secrets.mailgun_smtp
end
end
应用程序/邮寄/ user_mailer.rb：
class UserMailer < ApplicationMailer
# after_action :gmail_delivery, only: [:notify_user]
after_action :mandrill_delivery, only: [:newsletter]
after_action :mailgun_delivery, only: [:newsletter2]
def newsletter(user_id); '...' end # this will be sent through mandrill smtp
def newsletter2(user_id); '...' end # this will be sent through mailgun smtp
def notify_user(user_id); '...' end # this will be sent through gmail smtp
end
class UserMailer < ActionMailer::Base
def welcome_email(user, company)
@user = user
@url = user_url(@user)
delivery_options = { user_name: company.smtp_user,
password: company.smtp_password,
address: company.smtp_host }
mail(to: @user.email,
subject: "Please see the Terms and Conditions attached",
delivery_method_options: delivery_options)
end
end
轨道4允许动态递送选项。 上面的代码是直接从行动邮件基础知识手册，你可以在这里找到： http://guides.rubyonrails.org/v4.0/action_mailer_basics.html#sending-emails-with-dynamic-delivery-options
有了这个，可以有不同的SMTP设置为您发送的每一封电子邮件，或者像在你的使用情况进行不同的子类，如UserMailer，OtherMailer等。
对于任何人接近与后来的Rails的版本（3+）这个问题，试试这个
http://guides.rubyonrails.org/action_mailer_basics.html#sending-emails-with-dynamic-delivery-options
试图用jkrall的选择使用Rails 3.2.1，但由于某种原因，它不会覆盖默认配置，但这样做的：
MyMailer.my_email.delivery_method.settings.merge!(SMTP_SETTINGS).deliver
类似http://www.scottw.com/multiple-smtp-servers-with-action-mailer ，使工作。
Rails的2.3。*
# app/models/user_mailer.rb
class UserMailer < ActionMailer::Base
def self.smtp_settings
USER_MAILER_SMTP_SETTINGS
end
def spam(user)
recipients user.mail
from 'spam@example.com'
subject 'Enlarge whatever!'
body :user => user
content_type 'text/html'
end
end
# config/environment.rb
ActionMailer::Base.smtp_settings = standard_smtp_settings
USER_MAILER_SMTP_SETTINGS = user_smtp_settings
# From console or whatever...
UserMailer.deliver_spam(user)
恐怕这不是可行的本身。
但是你可以在模型中修改@@ smtp_settings变量欺骗了一点。
有一个关于奥赖利这也解释了它相当不错，即使他们的代码是不是干净，在所有的文章。 http://broadcast.oreilly.com/2009/03/using-multiple-smtp-accounts-w.html
https://github.com/AnthonyCaliendo/action_mailer_callbacks
我发现这个插件帮助解决这个问题对我来说很容易（如<5分钟）。 我简单地改变@@ smtp_settings在before_deliver特定的邮件，然后将其改回在after_deliver的默认值。 使用这种方法，我只需要回调添加到所需@@不同于默认smtp_settings邮寄。
class CustomMailer < ActionMailer::Base
before_deliver do |mail|
self.smtp_settings = custom_settings
end
after_deliver do |mail|
self.smtp_settings = default_settings
end
def some_message
subject "blah"
recipients "blah@blah.com"
from "ruby.ninja@ninjaness.com"
body "You can haz Ninja rb skillz!"
attachment some_doc
end
end
这里是另一种解决方案，这虽然看起来很可笑，我认为这是一个有点清洁和更容易在不同的AM :: Base的类重用：
module FTTUtilities
module ActionMailer
module ClassMethods
def smtp_settings
dict = YAML.load_file(RAILS_ROOT + "/config/custom_mailers.yml")[self.name.underscore]
@custom_smtp_settings ||= HashWithIndifferentAccess.new(dict)
end
end
module InstanceMethods
def smtp_settings
self.class.smtp_settings
end
end
end
end
例如梅勒：
class CustomMailer < ActionMailer::Base
extend FTTUtilites::ActionMailer::ClassMethods
include FTTUtilites::ActionMailer::InstanceMethods
end
解决方案为Rails 3.2：
class SomeMailer < ActionMailer::Base
include AbstractController::Callbacks
after_filter :set_delivery_options
private
def set_delivery_options
settings = {
:address => 'smtp.server',
:port => 587,
:domain => 'your_domain',
:user_name => 'smtp_username',
:password => 'smtp_password',
:authentication => 'PLAIN' # or something
}
message.delivery_method.settings.merge!(settings)
end
end
解决方案的灵感来自于如何发送电子邮件使用on Rails的的ActionMailer / Ruby的多，动态SMTP
当我想在控制台快速测试（Rails的5）我做了以下内容：
settings = { username: "" } # etc
mailer = MyMailer.some_method
mailer.delivery_method.settings.merge!(settings)
mailer.deliver
