What is the right way to embed image into email using Rails?

Question

What is the right way to embed an image into email using Rails?

Answer 1

Copy pasted from here

http://api.rubyonrails.org/classes/ActionMailer/Base.html#class-ActionMailer::Base-label-Inline+Attachments

Inline Attachments

You can also specify that a file should be displayed inline with other HTML. This is useful if you want to display a corporate logo or a photo.

    class Notifier < ApplicationMailer
      def welcome(recipient)
       attachments.inline['photo.png'] = File.read('path/to/photo.png')
       mail(to: recipient, subject: "Here is what we look like")
     end
   end

And then to reference the image in the view, you create a welcome.html.erb file and make a call to image_tag passing in the attachment you want to display and then call url on the attachment to get the relative content id path for the image source:

  
Please Don't Cringe

  <%= image_tag attachments['photo.png'].url -%>

As we are using Action View's image_tag method, you can pass in any other options you want:

 
Please Don't Cringe

 <%= image_tag attachments['photo.png'].url, alt: 'Our Photo', class: 'photo' -%>