From cb66f19a32667a32c4984b4da8720c7ce559a444 Mon Sep 17 00:00:00 2001
From: jpd800 <jacob.duffy@fammed.wisc.edu>
Date: Fri, 2 Sep 2016 15:25:37 -0500
Subject: Allow download of email attachments in the Mailer Preview template.

---
 railties/lib/rails/templates/rails/mailers/email.html.erb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/railties/lib/rails/templates/rails/mailers/email.html.erb b/railties/lib/rails/templates/rails/mailers/email.html.erb
index fed96fbc85..c63781ed0c 100644
--- a/railties/lib/rails/templates/rails/mailers/email.html.erb
+++ b/railties/lib/rails/templates/rails/mailers/email.html.erb
@@ -88,7 +88,10 @@
     <% unless @email.attachments.nil? || @email.attachments.empty? %>
       <dt>Attachments:</dt>
       <dd>
-        <%= @email.attachments.map { |a| a.respond_to?(:original_filename) ? a.original_filename : a.filename }.join(', ') %>
+        <% @email.attachments.each do |a| %>
+          <% filename = a.respond_to?(:original_filename) ? a.original_filename : a.filename %>
+          <%= link_to filename, "data:application/octet-stream;charset=utf-8;base64,#{Base64.encode64(a.body.to_s)}", download: filename %>
+        <% end %>
       </dd>
     <% end %>
 
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