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Hunter Hillegas

2007-Apr-06 04:31 UTC

attachment_fu File System Storage Change - Update?

Howdy,

It looks like one of the recent updates to attachment_fu has changed  
the way it names/stores files in the filesystem. I''m guessing it was  
this one:

* add default ID partitioning for attachments

Anyway, my files used to be stored in directories named after the PK.  
Now it seems that things have changed and files are stored with a new  
scheme.

So, anyone have any suggestions as to how I can migrate to the new  
storage setup? All the images in my app are broken.

Thanks,
Hunter


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Rick Olson

2007-Apr-08 02:45 UTC

head link

Re: attachment_fu File System Storage Change - Update?

On 4/5/07, Hunter Hillegas
<lists-HAWAbpnI61OZ1JSuHaJ1sQC/G2K4zDHf@public.gmane.org>
wrote:>
> Howdy,
>
> It looks like one of the recent updates to attachment_fu has changed
> the way it names/stores files in the filesystem. I''m guessing it
was
> this one:
>
> * add default ID partitioning for attachments
>
> Anyway, my files used to be stored in directories named after the PK.
> Now it seems that things have changed and files are stored with a new
> scheme.
>
> So, anyone have any suggestions as to how I can migrate to the new
> storage setup? All the images in my app are broken.
Hah, sorry about that.  If it makes you feel any better, I broke
Lighthouse too :)

For now, you can just hack your model like so:

        def partitioned_path(*args)
          [attachment_path_id] + args
        end

I did a manual migration looping through all the records and moving
them manually.  This isn''t the exact code, but something like this
should work.

class Avatar
  def old_full_filename(thumbnail = nil)
    file_system_path = (thumbnail ? thumbnail_class :
self).attachment_options[:path_prefix].to_s
    File.join(RAILS_ROOT, file_system_path, attachment_path_id.to_s,
thumbnail_name_for(thumbnail))
  end

Avatar.find(:all).each do |av|
  next unless File.exist?(av.old_full_filename)
  FileUtils.mkdir_p(File.dirname(av.full_filename))
  File.move av.old_full_filename, av.full_filename
end

-- 
Rick Olson
http://lighthouseapp.com
http://weblog.techno-weenie.net
http://mephistoblog.com

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lists-HAWAbpnI61OZ1JSuHaJ1sQC/G2K4zDHf@public.gmane.org

2007-Apr-09 23:08 UTC

head link

Re: attachment_fu File System Storage Change - Update?

Rick,

Thanks a ton for this. I just realized this response was sitting in my spam
folder and I''ve since re-sent the question to the list so please ignore
those. Whoops.

This looks good - I will give it a go.

Thanks again for this and the great plug-in!

Hunter

-----Original Message-----
From: Rick Olson <technoweenie-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Sent: Sat, April 7, 2007 10:45 pm
To: rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: [Rails] Re: attachment_fu File System Storage Change - Update?


On 4/5/07, Hunter Hillegas
<lists-HAWAbpnI61OZ1JSuHaJ1sQC/G2K4zDHf@public.gmane.org>
wrote:>
> Howdy,
>
> It looks like one of the recent updates to attachment_fu has changed
> the way it names/stores files in the filesystem. I''m guessing it
was
> this one:
>
> * add default ID partitioning for attachments
>
> Anyway, my files used to be stored in directories named after the PK.
> Now it seems that things have changed and files are stored with a new
> scheme.
>
> So, anyone have any suggestions as to how I can migrate to the new
> storage setup? All the images in my app are broken.
Hah, sorry about that.  If it makes you feel any better, I broke
Lighthouse too :)

For now, you can just hack your model like so:

        def partitioned_path(*args)
          [attachment_path_id] + args
        end

I did a manual migration looping through all the records and moving
them manually.  This isn''t the exact code, but something like this
should work.

class Avatar
  def old_full_filename(thumbnail = nil)
    file_system_path = (thumbnail ? thumbnail_class :
self).attachment_options[:path_prefix].to_s
    File.join(RAILS_ROOT, file_system_path, attachment_path_id.to_s,
thumbnail_name_for(thumbnail))
  end

Avatar.find(:all).each do |av|
  next unless File.exist?(av.old_full_filename)
  FileUtils.mkdir_p(File.dirname(av.full_filename))
  File.move av.old_full_filename, av.full_filename
end

-- 
Rick Olson
http://lighthouseapp.com
http://weblog.techno-weenie.net
http://mephistoblog.com




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Walter McGinnis

2007-Jun-18 03:33 UTC

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Re: attachment_fu File System Storage Change - Update?

Unfortunately I had a lot of links pointing back at legacy paths.
Here''s my middleground solution that I think allows me to move forward
with the new scheme for paths while not having to move my old files:

# workaround for legacy attachments
                                                              def
partitioned_path(*args)
    if LEGACY_IMAGE_FILE_PATHS_UP_TO.nil? or attachment_path_id.to_i >
LEGACY_IMAGE_FILE_PATHS_UP_TO.to_i
      ("%08d" % attachment_path_id).scan(/..../) + args
    else
      [attachment_path_id.to_s] + args
    end
end

I''ve got about 10k existing image files with ids up to about 49081,
since the new scheme starts creating directories at 0000, I doubt I''ll
see any directory names that will collide.  I must admit to being lazy
in the math department.  Am I missing anything?

Cheers,
Walter

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Rails - Apr 2007 - attachment_fu File System Storage Change - Update?

attachment_fu File System Storage Change - Update?

Re: attachment_fu File System Storage Change - Update?

Re: attachment_fu File System Storage Change - Update?

Re: attachment_fu File System Storage Change - Update?