title: Rails active storage - Open/download link
body: <p>A question on <code>Active Storage</code>: I just updated to rails 5.2 and I am trying to open the attached document which is saved as a <code>blob</code>. Currently, it's redirecting to <code>root_path</code>, any idea how can I open/download it instead?</p>
  <p>My code in Rails view is:</p>
  <p><code>&lt;%= link_to(document.filename, rails_blob_path(document, disposition: &quot;attachment&quot;)) %&gt;</code></p>