ValueError                                Traceback (most recent call last)
<ipython-input-15-bed9a9f3e7b2> in <module>()
----> 1 user.primary_image.save("image.jpg", File(img_temp), save=True)

~/Desktop/pyco/test/env/lib/python3.6/site-packages/django/db/models/fields/files.py in save(self, name, content, save)
     84
     85     def save(self, name, content, save=True):
---> 86         name = self.field.generate_filename(self.instance, name)
     87         self.name = self.storage.save(name, content, max_length=self.field.max_length)
     88         setattr(self.instance, self.field.name, self.name)

~/Desktop/pyco/test/env/lib/python3.6/site-packages/django/db/models/fields/files.py in generate_filename(self, instance, filename)
    300         """
    301         if callable(self.upload_to):
--> 302             filename = self.upload_to(instance, filename)
    303         else:
    304             dirname = datetime.datetime.now().strftime(self.upload_to)

~/Desktop/pyco/test/app/user/models/user.py in upload_image_to(instance, filename)
     23 def upload_image_to(instance, filename):
     24     import pdb; pdb.set_trace()
---> 25     mime_type = imghdr.what(instance.primary_image)
     26     # Normalize jpeg to jpg
     27     if mime_type == 'jpeg':

/usr/lib/python3.6/imghdr.py in what(file, h)
     17                 h = f.read(32)
     18             else:
---> 19                 location = file.tell()
     20                 h = file.read(32)
     21                 file.seek(location)

~/Desktop/pyco/test/env/lib/python3.6/site-packages/django/core/files/utils.py in <lambda>(self)
     19     readlines = property(lambda self: self.file.readlines)
     20     seek = property(lambda self: self.file.seek)
---> 21     tell = property(lambda self: self.file.tell)
     22     truncate = property(lambda self: self.file.truncate)
     23     write = property(lambda self: self.file.write)

~/Desktop/pyco/test/env/lib/python3.6/site-packages/django/db/models/fields/files.py in _get_file(self)
     39
     40     def _get_file(self):
---> 41         self._require_file()
     42         if not hasattr(self, '_file') or self._file is None:
     43             self._file = self.storage.open(self.name, 'rb')

~/Desktop/pyco/test/env/lib/python3.6/site-packages/django/db/models/fields/files.py in _require_file(self)
     36     def _require_file(self):
     37         if not self:
---> 38             raise ValueError("The '%s' attribute has no file associated with it." % self.field.name)
     39
     40     def _get_file(self):