Hello,
I have a model ...
class PurchaseOrder(models.Model):
po_number = models.IntegerField(unique=True)
and a function ...
def get_po_number(self, *args, **kwargs):
if not self.id:
last_po = PurchaseOrder.objects.order_by('po_number').last()
if last_po:
last_po_num = last_po.po_number[-2:]
new_po_num = int(last_po_num) + 1
else:
new_po_num = '0001'
self.po_number = new_po_num
return self.po_number
what I'm trying to do is use the get_po_number() function to get a default
value for the po_number field in the model. However when I set the default
in the model like so...
class PurchaseOrder(models.Model):
po_number = models.IntegerField(unique=True,
default=get_po_number(self))
it says "NameError: name 'self' is not defined"
What am I doing wrong? Thanks!
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