thumbnail_storage is None by default

[lincolnloop]

In [6]: l.image.generate_thumbnail({'size':(50,50)})
---------------------------------------------------------------------------
        Traceback (most recent call last)

/home/pete/sandbox/cloudfiles/project/ in ()

/home/pete/sandbox/cloudfiles/src/easy-thumbnails/easy_thumbnails/files.py in generate_thumbnail(self, thumbnail_options)
    176         filename = self.get_thumbnail_name(thumbnail_options)
    177         thumbnail = ThumbnailFile(filename, ContentFile(data),
--> 178                                   storage=self.thumbnail_storage)
    179         thumbnail.image = thumbnail_image
    180         thumbnail._committed = False

: 'ThumbnailerImageFieldFile' object has no attribute 'thumbnail_storage'

This fixes the issue:

diff --git a/easy_thumbnails/fields.py b/easy_thumbnails/fields.py
index d49af50..ee77d2e 100644
--- a/easy_thumbnails/fields.py
+++ b/easy_thumbnails/fields.py
@@ -16,10 +16,11 @@ class ThumbnailerField(FileField):
     def __init__(self, *args, **kwargs):
         # Arguments not explicitly defined so that the normal ImageField
         # positional arguments can be used.
-        self.thumbnail_storage = kwargs.pop('thumbnail_storage', None)
         
         super(ThumbnailerField, self).__init__(*args, **kwargs)
 
+        self.thumbnail_storage = kwargs.pop('thumbnail_storage', self.storage)
+
     def south_field_triple(self):
         """
         Return a suitable description of this field for South.

[SmileyChris]

Hrm... think this is due to django's FieldFile not using super() in it's init method... grr.

[SmileyChris]

Odd, can't seem to reproduce this in a test: have a look at 2affc77

[SmileyChris]

ThumbnailerFieldFile now subclasses Thumbnailer, which sets self.thumbnail_storage