Commits on Mar 9, 2018

1. A migration guide from Paperclip to ActiveStorage …

   A start at an introductory migration path for moving from Paperclip to
   [ActiveStorage].
   
   ActiveStorage is coming in Rails 5.2 (April, perhaps) and we want to
   help people move from Paperclip to it. Having a file upload strategy
   baked into Rails itself will allow us all to focus our efforts and
   follow a common goal.
   
   This migration guide is rudimentary at best: it works for a `User`
   object with one `avatar` attachment. It is provided as a framework to
   start the documentation.
   
   I have tried this in a dummy app.
   
   [ActiveStorage]: http://edgeguides.rubyonrails.org/active_storage_overview.html

   

   mike-burns committed Mar 9, 2018
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2. Updates from review …

   - open-uri is a security concern, so let's not recommend it. Separate
   one-liners based on whether they're doing local or remote storage.
   - Mention the performance impact of the separate table. While migrating
   they will want to consider each use case for n+1 loads.
   
   Thanks, Derek!

   

   mike-burns committed Mar 9, 2018
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3. Remove stray newline

   

   mike-burns committed Mar 9, 2018
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