How do I render a base64-encoded image in Rails?

Question

I have a base64-encoded JPG in my app, and I'd like to render that image as a JPG in a controller.

Answer 1

I worked this out as soon as I asked the question. Assuming you have the base64 string in @image_data:

send_data Base64.decode64(@image_data),
  :type => 'image/jpeg', :disposition => 'inline'