On 5/6/2009 10:27 AM, mamco wrote:
> I have two models "Deposit" and "Cheque". I'm trying to show total
> the amount of cheques in the admin area using the method name in the
> list_display. It seems to work (although I think the documentation
> suggests it may not because it requires the lookup for each row
> shown).
>
> I've got this in the admin.py
> class DepositAdmin(admin.ModelAdmin)
> list_display = ('date', 'cash', 'ChequeTotal')
>
> and in the Deposit model:
>
> def chequeTotal(self):
> return '%s' % Cheque.objects.aggregate(cheque_sum=Sum('amount'))
>
> The problem I'm having is that it is displayed as:
> {'cheque_sum': Decimal('123.12')}
> in the list. How do I get that to display just the 123.12?
>
> I know this is likely a simply python question, but not sure what that
> returned format is called in order to search accordingly for an
> answer.
The object being returned back by aggregate is a Python dictionary. In
this case, you just want the value of the 'checkque_sum' element, so:
{{{
return '%s'
%Cheque.objects.aggregate(cheque_sum=Sum('amount'))['cheque_sum']
}}}
--
George
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