Class: ActionMailer::InlineCssHook

Inherits:
Object
  • Object
show all
Defined in:
lib/action_mailer/inline_css_hook.rb

Class Method Summary collapse

Class Method Details

.delivering_email(message) ⇒ Object 



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# File 'lib/action_mailer/inline_css_hook.rb', line 6

def self.delivering_email(message)

  if html_part = (message.html_part || (message.content_type =~ /text\/html/ && message))
    host = ActionMailerInlineCss.base_url || message.header[:host].to_s

    # Generate an email with all CSS inlined (access CSS a FS path), and URIs
    premailer = ::Premailer.new(html_part.body.to_s, :with_html_string => true, :base_url => host)

    msg_charset = message.charset

    if message.text_part && message.text_part.body.to_s
      html_part.content_type "text/html; charset=#{msg_charset}"
      html_part.body premailer.to_inline_css
    else
      existing_attachments = message.attachments

      # Clear body to make a multipart email
      message.body = nil

      # IMPORTANT: Plain text part must be generated before CSS is inlined.
      # Not doing so results in CSS declarations (<style>) visible in the plain text part.
      message.text_part = Mail::Part.new do
        content_type "text/plain; charset=#{msg_charset}"
        body premailer.to_plain_text
      end

      message.html_part = Mail::Part.new do
        content_type "text/html; charset=#{msg_charset}"
        body premailer.to_inline_css
      end

      message.content_type 'multipart/mixed' if ! existing_attachments.empty?

      existing_attachments.each {|a| message.body << a }
    end

    message
  end
end