Hi Eankomah,
You have several solutions depending upon your need:
*>Le mercredi 23 septembre 2020 07:24:05 UTC+2, eankomah a écrit :*
*>Hi all am stuck at getting total_price Calculated in my model*
*>*
*>class inventory(models.Model):*
*> def __str__(self):*
*> return self.name*
*> ...*
*> total_price = models.FloatField(total=('unit_price' * 'quantity'))*
*> ...*
*>Thanks*
First *dr neyx de godlove*'s answer is the more elegant if you do not need
a dedicated db field.
You just need to remove the 'get_' prefix in get_total_price :
@property
def total_price(self):
total_price = self.unit_price * self.quantity
return total_price
(*@dr neyx de godlove*, thank I learned the use of property in django
trying you solution)
Then if you really need a dedicated field, create it and override the save
method in your model :
total_price = models.FloatField()
def save(self, *args, **kwargs):
#change total_price
# Transaction.save(update_fields['total_price'])
self.total_price = self.unit_price * self.quantity
super(Inventory, self).save(*args, **kwargs)
Best Regards
--
Frédéric Salvetat
Le mercredi 23 septembre 2020 à 17:13:32 UTC+2, Kasper Laudrup a écrit :
> Hi Harish,
>
> On 23/09/2020 11.27, Harish Thiyagharajan wrote:
> > I think you mailed me instead of mailing someone
> >
>
> No. If you look at the mail header, you can see this was sent to the
> django-users mailing list.
>
> Kind regards,
>
> Kasper Laudrup
>
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