Attachment downloaded from a URL
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There are times when you want the user to give you a URL to fetch an attachment from instead of physically uploading it in a multipart form. This is a common enough use case but there are many others which are similar. You need to fetch content from a URL and attach to paperclip. While this was fairly easy earlier, with paperclip (>= 3.1.4) it's become even easier.
Assuming you've already ran paperclip migration for your user model you can now
class User < ActiveRecord::Base attr_reader :avatar_remote_url has_attached_file :avatar def avatar_remote_url=(url_value) self.avatar = URI.parse(url_value) # Assuming url_value is http://example.com/photos/face.png # avatar_file_name == "face.png" # avatar_content_type == "image/png" @avatar_remote_url = url_value end end
For this to work, make sure that you've registered the URI adapter, which is not registered by default. Enable it by adding
config/initializers/paperclip.rb. Further details are in the IO Adapters section of the README.