It looks like the problem is that you're trying to group by
Technology, but your queryset is in Projects. You could experiment
with the "regroup" template tag
( http://docs.djangoproject.com/en/dev/ref/templates/builtins/#regroup
)
It's a little hard to understand at first, but I think it's pretty
much what you're trying to do. You would be able to remove the
".distinct" part of your query because dictionary keys are already
can't be doubled.
Hope that helps.
Tim
On Nov 26, 7:04 am, andreas schmid <a.schmi...@gmail.com> wrote:
> hi,
>
> i have a question about retrieving related objects avoiding double entries.
> actually i have 3 models:
> topics
> projects
> technologies
>
> the projects model has foreignkeys to topics and technologies. i have a
> view for the topic detail like this:
>
> def topic_detail(request, slug):
> topic = get_object_or_404(Topic, slug=slug)
> return object_list(request,
> queryset=topic.project_set.all(),
> paginate_by=20,
> template_name='FSlabs/topic_detail.html',
> extra_context={ 'topic': topic })
>
> in the template i can loop trough the projects and get those assigned
> to this topic.
> but im having problems to retrieve the technologies used by those
> projects without having double entries.
>
> i tried this in the template with a list for every project
> assigned...which of course is not what i want:
>
> {% for project in object_list %}
> {% for technology in project.technologies.distinct %}
> <a href="{{ technology.get_absolute_url }}">{{
> technology.title }}</a>
> {% if forloop.last %}{% else %}
> {% ifequal forloop.revcounter0 1 %}and {% else %}, {%
> endifequal %}
> {% endif %}
> {% endfor %}
> {% endfor %}
>
> can somebody point me to the right way to get what i need?
>
> thx
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