def save(self, *args, **kwargs):
    if (self.pk is None):
        self._read_exif(self.image.file)
    super(ExifData, self).save(*args, **kwargs)
def save(self, *args, **kwargs):
    if (self.pk is None):
        self._read_exif(self.image.file)
    super(ExifData, self).save(*args, **kwargs)