class Order(models.Model):
- pos_id = models.CharField('POS id', max_length=255) # TODO: redundant?
+ pos_id = models.CharField('POS id', max_length=255, blank=True) # TODO: redundant?
customer_ip = models.GenericIPAddressField('adres IP klienta')
order_id = models.CharField('ID zamówienia', max_length=255, blank=True)