Bug with image thumbnailing

[blanchardjeremy]

In fields.py

        if not self.__dict__.has_key(attribute):
            # Proceed to thumbnail generation only if a *thumbnail* attribute
            # is requested
            if self.field.thumbnails.has_key(attribute):
                # Generate thumbnail
                self._require_file()    # TODO: document this
                if self._verify_thumbnail_requirements():
                    proc_opts = self.field.thumbnails[attribute]
                    t = ThumbnailFieldFile(self.instance, self.field, self, self.name, attribute, proc_opts)
                    t.save()
                    assert self.__dict__[attribute] == t, \
                        Exception('Thumbnail attribute `%s` not set' % attribute)
            else:
                return super(BaseEnhancedImageFieldFile, self).__getattr__(attribute)
        return self.__dict__[attribute]

I'm getting a condition where if self._verify_thumbnail_requirements() is false and then it pops down to self.__dict__[attribute] which throws an error.

I think there should be some logic to account for this.

Unfortunately, I wasn't able to figure out exactly how I got my field/thumbnail into this state. I imagine that's not too helpful. The only steps I remember doing was having an image, editing that model and uploading a new image, and pressing save. My form had an error so I was being redirected back to the form. I guess it could be form some in-between state that the field is in? I'm not sure.