Friday, July 6, 2018

ActionMailer - Create new mail with attachments from original RFC822 message

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I use an email delivery service to send emails (Sparkpost), and everytime one of these emails is replied, I receive a JSON that contains: the reply mail body as HTML (body_html), the reply mail body as text (body_text) and the original RFC822 (email_rfc822) for the reply message.

After receiving this JSON, I need to forward this email to another recipient. Currently, I use the following mailer to achieve that:

class ReplyMailer < ApplicationMailer   def reply(body_html, body_text, options = {})     mail(to: options[:to], from: options[:from], reply_to: options[:reply_to], subject: options[:subject], skip_premailer: true) do |format|       format.html { render html: body_html.html_safe } if body_html.present?       format.text { render plain: body_text } if body_text.present?     end   end end  

The problem with this approach is that it does not forward the attachments of the original message.

How could change this mailer to also forward all the attachments from the original message (including inline images that are referenced on the html body)?

2 Answers

Answers 1

The following snippet might help you

options[:attachments].each do |attachment|     attachments[attachment.original_filename] = File.read(attachment.tempfile) end 

Answers 2

You can use something like this to handle inline attachments

 context "Inline Attachments" do it "accepts an inline attachment" do   test_email = Mailer.test_email inline_attachments: 1   @delivery_method.deliver!(test_email)    images = @delivery_method.data[:content][:inline_images]   expect(images.length).to eq(1)   image = images[0]   expect(image).to include(:name, :type=>"image/png; filename=image_0.png", :data=>"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")   expect(image[:name]).to match(/.*@.*/) end 
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