Hi Mario,
> I am new in Django. I am implementing a web application using the
> django template support. In this way, i am using a single 2-columns
> template. While the second column changes according to the presented
> content, the first column shows the menu and some statistical
> information for all pages. This information must indicate the number
> of entities of the model, for example the number of registered users.
>
> I want to know how show the number of registered users in that page.
> Do I need to retrieve this value to each action described in views.py?
> The code presented below does not work.
>
> <h2>Statistics</h2>
> <ul>
> <li>Users({{User.objects.count}})</li>
> ...
> </ul>
You could create a custom template tag that renders these statistics
for you. See:
http://www.djangoproject.com/documentation/templates_python/#writing-custom-template-tags
You can then embed this tag in templates where you want to display
that info. For added measure, you can add some caching when/if these
repetitive DB calls start hurting application performance:
http://www.djangoproject.com/documentation/cache/
-Rajesh D
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