使用rake任务修剪和压缩回形针的图像

Question

I want to trimming the image of paperclip in my database. Because I`m running my own private web service, but I forgot to add the styles when user create the image...

has_attached_file :avatar,
                  :storage => :s3,
                  :styles => { # I forgot to add this styles
                    :medium => "370x370#", # I forgot to add this styles
                    :thumbs => "120x120#" # I forgot to add this styles
                  }

So I want to run the rake task and trimming like 370×370# and 120×120#. But I cant`t find the way to trimming the image after user save.

Does anyone assist me ?

Answer 1

The paperclip gem comes with a rake task for exactly this purpose:

rake paperclip:refresh:thumbnails

Just run that from the command line and it will take care of generating all of your reduced-size images.