No thumbs generated on the list (S3)

[tunarob]

On /admin/filebrowser/browse/ I can't see images thumbs. I installed grappelli etc strict as documentation says. All works fine except thumb.
Their generated HTML source looks that:

<td class="fb_thumbnail">
    <a href="/site_media/media/uploads/c7e2b502ad416f525fa38cb94dfcd933.png" class="fb_viewlink"><img src="" title="Zobacz obraz"></a>
</td>```

EDIT:
does not generate thumbs in virtualenv.

[sehmaschine]

which versions of grappelli, filebrowser and django are you using?

[qntnrbns]

I am having the same problem using django 1.4.1, filebrowser 3.5.0, grappelli 2.4.0. This is a problem when I am serving media from s3, it does not seem to be generating versions when you upload media.

[fyaconiello]

I am also having this problem.

My implimentation involves the following versions:
Django==1.4
boto==2.5.2
django-filebrowser==3.5.0
django-grappelli==2.4.0
django-storages==1.1.5
django-tinymce==1.5.1b2

Looks like the thumbnail generation step fails for S3 hosted files.

[fyaconiello]

I found the issue. There is a slight bug before line 315 of the functions file. (see: https://github.com/sehmaschine/django-filebrowser/blob/master/filebrowser/functions.py#L315)

Solution

inserting the following snippet before line 315 solves the problem:

# Rewing the file pointer back to 0, before saving to the storage object
tmpfile.seek(0)

# Existing Code
site.storage.save(version_path, tmpfile)
return version_path

Debugging the Problem

I stepped through this function printing out the exception messages until I got this:
fp is at EOF. Use rewind option or seek() to data start.

Ex:

...
        return version_path
    except Exception, e:
        print e
        return None
...

[sehmaschine]

@fyaconiello shouldn´t that snippet be part of the s3-storage engine (with django-storages) instaed of adding it to the filebrowser?

[fyaconiello]

I thought it should be part of your library, however I posted the question to the community so others can weigh in:
http://stackoverflow.com/questions/12249458/bug-with-django-filebrowser-and-django-storages-which-library-is-at-fault

[philgyford]

Does this mean that dango-filebrowser doesn't currently work with S3? If so, what are the potential ways to solve this?

[sehmaschine]

here´s a related discussion: #40

we´re currently not working on filebrowser + s3. however, if someone comes up with a patch, we´re happy to implement it.

[nkeilar]

Would be great if someone could clarify the change required to get this working. Is there and open pull request somewhere I can apply to django-filebrowser, django-grappelli or django-storages? Cheers!

[nkeilar]

Since I was using sorl thumbnails in other areas of the site, I opted just to use that tag instead. Problem solved. Check out the modified template here. https://gist.github.com/madteckhead/5778759

[nkeilar]

This also stops thumbnail files being saved locally in your MEDIA_ROOT which has probably been set to '' resulting in fules saved in an ugly place along with your application.

[sehmaschine]

see #283