Resize existing images to new style in paperclip & RMagick

Question

I\'ve been using paperclip to upload and auto-resize photos in my Rails app, and I love it. Only problem is about every other month my crazy manager decides he wants a new size

Answer 1

You want the reprocess! method of Paperclip::Attachment. See the docs.

class User < ActiveRecord::Base
  has_attached_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100>" }
end

# Console...
>> User.find_each { |u| u.avatar.reprocess! }

Also, according to the comments before the reprocess! method, there's a paperclip:refresh Rake task, which might be easier.