The easiest way is probably moving that list to the view. For example
customers = Customer.objects...
sellers = Seller.objects...
filtered_list = [pair for pair in zip(sellers, customers) if
pair[0].customer_id == pair[1].id]
Then pass filtered_list into the template context. Inside the
template, you could do:
(Assuming Django >= 1.1)
{% for seller, customer in filtered_list %}
<p>{{ seller.name }} {{ customer.name }} </p>
{% empty %}
<p>No customers.</p>
{% endfor %}
-- dz
On Wed, Aug 12, 2009 at 5:06 AM, elminio<wgruszczyn...@gmail.com> wrote:
>
> Hello,
>
> Common task in template is doing for loop end inserting into html some
> elements.
>
> for example
>
> 1: {% for seller in sellers %}
> 2: {% for customer in customers %}
> 3: {% ifequal seller.customer_id customer.id %}
> 4: <p>{{ seller.name }} {{ customer.name }} </p>
> 5: {% endifequal %}
> 6: {% endfor %}
> 7: {% endfor %}
>
>
> Thats clear.
>
> Now I would like to know when the loop is over and system didnt't find
> customer for seller (line 3). And in this case insert <p>no customers</
> p>.
>
> If it shouldnt be done in template how can I inject logic from python
> file ?
>
> thanks for help
>
>
>
>
> >
>
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