Django: instance needs to have a primary key value before a many-to-many relationship

Question

This is my model

class Business(models.Model):
    business_type = models.ManyToManyField(BusinessType)
    establishment_type = models.ForeignKey(Establishm         


        

Answer 1

try it with this order:

if business.is_valid():
            busi = business.save(commit=False)
            et = EstablishmentType.objects.get(id=6)
            busi.establishment_type = et
            busi.save() #with commit == true
            bt = BusinessType.objects.get(id=6)
            busi.business_type = bt
            busi.save() #here you save many to many