On Thu, Aug 4, 2011 at 4:10 PM, Javier Guerra Giraldez
<jav...@guerrag.com> wrote:
> On Thu, Aug 4, 2011 at 2:14 PM, nixlists <nixmli...@gmail.com> wrote:
>> I need to rewrite the view so that for each object I need to make a
>> simple calculation based on the data in the fields of that object
>
> you can simply add a method to your model class:
>
> class Claim(models.Model):
> contract = models.ForeignKey(Contract)
> ndc = models.ForeignKey(Product)
> ...
> quantity = models.IntegerField(blank=True, null=True)
>
> def mycalc(self)
> return self.quantity * ndc # or whatever you need to calculate
>
>
> then, in your template you can simply use:
>
> {% for c in claims%}
> {{ c.mycalc }}
> {% endfor %}
Thanks. How would this work if I need to access values from other
models? Can I define a model method that accesses related data from
other models?
Here's the view code I tried adding the values to QuerySet
cset = Claim.objects.filter(...)
for claim in cset:
rebate = claim.quantity * price * rebate_pct #price and rebate_pct
are in other models
claim.rebate = rebate
return list_detail.object_list(
request,
queryset = cset,
paginate_by=paginate_by,
)
For some reason claim.rebate is not passed to the template, but is
with render_to_response.
return render_to_response('contracts/claim_list.html', {'object_list': cset})
If I have to use render_to_response instead of the generic view, how
would I paginate? I am currently using a django snippet for
pagination:
http://www.tummy.com/Community/Articles/django-pagination/
It works for the generic object_list.
Thanks.
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