Thanks, John. Your second suggestion (that I find a way to modify the
Document class) put me on the right track. I eventually found this
article:
http://blog.arbingersys.com/2008/04/google-app-engine-better-many-to-many.html
which worked for my problem.
On May 14, 7:17 pm, "John Lenton" <[EMAIL PROTECTED]> wrote:
> On Wed, May 14, 2008 at 6:33 PM,John<[EMAIL PROTECTED]> wrote:
>
> > I'm having trouble accessing dictionary elements within a nested for
> > loop. here are some code snippets:
>
> > [...]
>
> > # so far so good, but then I try to iterate over the documents and
> > their associated tags in a template
> > # here is the template with the html stripped out for readability
> > {% for document in documents %}
> > {{ document.content }}
> > {% for doctag in tag_dict[document.uid] %} {{ doctag.tagid }} {%
> > endfor % }
> > {% endfor %}
>
> > # document.content is fine, but when I try to access tag_dict within
> > the template's for loop, it complains:
> > TemplateSyntaxError: Could not parse the remainder: [document.uid]
>
> right, templates are not python :) you can't do that, and it's on
> purpose: that kind of fiddling around with the model is best done in
> the view, not in the template.
>
> So... instead of doing e.g.
>
> documents = Document.objects.all()
> tag_dict = {}
> for document in documents:
> tag_dict[document.uid] = DocumentTag.objects.filter(docid=document.uid)
>
> and passing those two into the template, you could do something along
> the lines of
>
> documents = [dict(object=document,
> tags=DocumentTag.objects.filter(docid=document.uid))
> for document in Document.objects.all()]
>
> and then in the template, you do
>
> {% for document in documents %}
> {{ document.object.content }}
> {% for doctag in document.tags %} {{ doctag.tagid }} {% endfor %}
> {% endfor %}
>
> this is assuming there is some reason for you not to modify the
> Document class to give it the appropriate methods or attributes to
> access the related DocumentTag directly; if you could do that, life
> would be much easier :)
>
> --JohnLenton ([EMAIL PROTECTED]) -- Random fortune:
> The trouble with a lot of self-made men is that they worship their creator.
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