sorl.thumbnail.ImageField not showing thumbnails with the AdminImageMixin

[int-ua]

sorl-thumbnail==12.3
Django==1.8.3
Pillow==2.9.0

from sorl.thumbnail import ImageField as SorlImage
class Person(PublishedMixin):
    photo = SorlImage(upload_to='photos', blank=True, null=True)
...

from sorl.thumbnail.admin import AdminImageMixin as SorlImageAdmin
from reversion import VersionAdmin

class Admin(VersionAdmin):
    exclude = []

    class Media:
        css = {
            'all': ('css/admin_forms.css',)
        }

@register(Person)
class PersonAdmin(Admin, SorlImageAdmin):
...

I don't see any changes to the admin form compared to the default one, nothing in console output. Both with and without Grappelli activated.

[ulyssesv]

The root cause of this problem for me was that there were no migrations available for sorl. I'm using python 3.5, django 1.9 and sorl 13.2 with Pillow.

I didn't have time to investigate why the migration was not being applied, but I believe that it may have to be something about django 1.9 or AppConfig...

Ugly temporary fix below...

$ python manage.py migrate thumbnail
CommandError: App 'thumbnail' does not have migrations.
$ python manage.py makemigrations thumbnail
Migrations for 'thumbnail':
  0001_initial.py:
    - Create model KVStore
$ python manage.py migrate
Operations to perform:
  Apply all migrations: <...>
Running migrations:
  Rendering model states... DONE
  Applying thumbnail.0001_initial... OK

[iknowmac]

bump...

[mariocesar]

try to use latest sorl.thumbnail version

pip install --pre --upgrade sorl-thumbnail

It has migrations

[iknowmac]

Worked great, thanks.

[amigo]

It's works! Thank you.

[MaximePommier]

Thanks for this trick !