如何创建自定义电子邮件标头

Question

我正在尝试创建自定义电子邮件标头以使用SendGrid api.

这是我正在做的 - 但它不起作用:

class Mailman < ActionMailer::Base
  default :from => "info@sample.com"

  def send_message(name, email, message)
    @name = name
    @email = email
    @message = message

    mail(:to => 'info@sample.com',
     :from => email,
     :subject => "Message from the site",
     :headers['X-SMTPAPI'] => "category: Drip Email"
    )
  end

end

任何帮助赞赏.

谢谢,亚当

Answer 1

你可以使用ActionMailer的#headers方法,我编辑了你的例子来说明如何:

class Mailman < ActionMailer::Base
  default :from => "info@sample.com"

  def send_message(name, email, message)
    @name = name
    @email = email
    @message = message

    headers['X-SMTPAPI'] = '{"category": "Drip Email"}'

    mail(:to => 'info@sample.com',
     :from => email,
     :subject => "Message from the site"
    )
  end

end

或者,您也可以将哈希作为参数传递给方法#headers:

headers {"SPECIFIC-HEADER-1" => "value", "ANOTHER-HEADER" => "and so..."}

我希望这可以帮助你,如果不是,你总是可以查看rails指南:http://edgeguides.rubyonrails.org/action_mailer_basics.html.

Answer 2

我使用下面的代码,工作正常,只需将哈希转换为json to_json

headers['X-SMTPAPI'] = { 
  category: "Weekly Newsletter",
  unique_args: { user_id: user.id } 
}.to_json