This is extremely helpful! I didn't know this was possible in Django
to create a tuple and loop through both items using a for loop in the
template. Thank you!
I am currently hung up on one last part, however. In the example
above you assume that both p and v belong to products. In my case,
that is not the case. I have a queryset of products that contains the
vendor name, model name and model number. I also have a formset
containing forms. I am trying to combine these 2 lists of objects
into the tuple so I can iterate over both in the template.
# or more pythonically if its easy to find your vendor:
zipped = [ (form, << NEED HELP HERE product_queryset>>) for form
in formset.forms ]
context = { 'products': zipped }
{% for form, product in products %}
{{product.vendor}} {{product.model_name}} {{product.model_num}}
{{form}}
{% endfor %
Any suggestions?
On Sep 30, 9:45 am, felix <[EMAIL PROTECTED]> wrote:
> malcom is suggesting this:
>
> def view(request):
> blah blah blah
> ...
> zipped = []
> for p in products:
> v = find the vendor for this product
> zipped.append( ( p, v) ) # add them as a tuple
>
> # or more pythonically if its easy to find your vendor:
> zipped = [ (p, vendor for product) for p in products ]
> context = { 'products': zipped }
>
> {% for product, vendor in products %}
> {{product}} {{vendor}}
> {% endfor %}
>
> On Sep 30, 5:05 pm, SnappyDjangoUser <[EMAIL PROTECTED]> wrote:
>
> > Hi Malcolm,
>
> > You suggested:
>
> > > set up the data structures
> > > you pass to your view a bit differently so that you can loop over the
> > > forms and the products simultaneously (that is, pull apart the formset
> > > forms and zip them together with the product entries in the view).
>
> > This is exactly what I like to do! I am still a bit confused on exact
> > implementation, however, because I have not found a way in Django to
> > loop through 2 structures at once in a template. The forloop.counter
> > seems that it is mostly used for printing the iteration through the
> > loop (not for indexing) and the "for loop" tag in Django is built only
> > to iterate through one structure at a time. Do you have any examples
> > how how to loop through 2 strucutres simultaneously?
>
> > Thanks!
>
> > -Brian
>
> > On Sep 30, 12:10 am, Malcolm Tredinnick <[EMAIL PROTECTED]>
> > wrote:
>
> > > On Mon, 2008-09-29 at 17:31 -0700, SnappyDjangoUser wrote:
> > > > Hi Folks,
>
> > > > How can I use a forloop counter to index into a query set as in the
> > > > example below?
>
> > > > (I know this code does not work, but I want to do something of the
> > > > sort):
>
> > > > {% for form in quote_product_formset.forms %}
> > > > <tr>
> > > > <td>{{ product.(forloop.counter).Vendor }}</td>
> > > > </tr>
>
> > > > {{ form }}
> > > > {% endfor %}
>
> > > > (in the above case, Vendor is a field in product. So if I want to
> > > > access the first product when forloop counter is 1, the variable would
> > > > expland to "{{ product.1.Vendor }}")
>
> > > You can't do indirect variable references like this in Django's
> > > templating language. The reasoning is that it ends up complicating the
> > > template structure when you wander down that path. Instead, factor it
> > > out into a template tag (that can be passed the current context, so it
> > > will have access to the forloop counter) or set up the data structures
> > > you pass to your view a bit differently so that you can loop over the
> > > forms and the products simultaneously (that is, pull apart the formset
> > > forms and zip them together with the product entries in the view).
>
> > > Usually the second approach works a bit more nicely, but either is
> > > possible.
>
> > > Regards,
> > > Malcolm
>
>
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