将外部CSS转换为内联CSS的邮件在Rails [英] Converting External CSS to Inline CSS for Mail in Rails

问题描述

我正在尝试创建一个应用程序，该应用程序将发送样式很重的电子邮件，并要求客户端在Google的Gmail之外工作。我研究了这个问题，它看起来像Gmail从外部文件或CSS嵌套在样式标签中删除CSS。

I am trying to create an application that will send out style-heavy emails and have required clients working except Google's Gmail. I researched the issue and it looks like Gmail strips out CSS from external files or CSS nested in the 'style' tag. Does an easy way exist of moving style from an external file to being inline?

需要一些简单的方法：

<style>
.wide { width: 100px; }
.cell { display: block; }
</style>
<span class="wide cell">Sample</span>

并将其转换为：

<div class="wide cell" style="width: 100px; display: block;">Sample</div>

$ b

谢谢！

Thanks!

推荐答案

添加了 premailer ：

def premailer(message)
  message.text_part.body = Premailer.new(message.text_part.body.to_s, with_html_string: true).to_plain_text
  message.html_part.body = Premailer.new(message.html_part.body.to_s, with_html_string: true).to_inline_css

  return message
end

def welcome(user)
  @user = user

  message = mail ...
end

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