There might be a better way, but something like this should work.
In your view, build a list...
transaction_list = []
balance = 0
for tran in Transaction.objects.order_by('date'):
balance = balance + tran.debit
balance = balance - tran.credit
transaction_list.append({'transaction':tran,'balance':balance})
Then in your view, you loop through the transaction list.
row.transaction will be a model instance
{% for row in transaction_list %}
{{ row.transaction.description }}
{{ row.transaction.debit }}
{{ row.transaction.credit }}
{{ row.balance }}
{% endfor %}
On Feb 18, 10:52 am, Marcelo Barbero <barberomarc...@gmail.com> wrote:
> I have a model with accounting records, in which the last two columns
> are "Debt" and "Credit".
>
> I would like to do a report that is something like the following:
>
> Description Debt Credit Balance
> Movement 1 100.00 0.00 100.00
> Movement 2 0.00 20.00 80.00
>
> Etc.
>
> I can do this with a database view and working with the records
> one-by-one in the Django view function, but I was wandering if there
> is a better approach, because I'm doing this using raw SQL and then I
> lose lots of Django model functionality.
>
> Marcelo
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