On Tue, 2009-04-21 at 11:51 -0700, adrian wrote:
>
> I want to have an inclusion tag that builds a menu system, which has a
> default config.
>
> default_config = [list of dicts here]
>
> @register.inclusion_tag('_nav_leftmenu.html')
> def nav_leftmenu(menu_config=default_config):
> # build stuff here to display menu system
>
> return {'menu_html': menu_html}
>
> I use this tag in my base.html as follows:
>
> {% load nav_leftmenu %}
> {% nav_leftmenu menu_config %}
>
> This works fine but only if menu_config is defined in the view and
> passed in the context to base.html. If it is not defined, django
> throws an error even though I have defined the menu_config argument as
> optional.
>
> Is there a way to do this (other than context processor)? Thanks
You can write tags that take optional arguments. Django contains a
number of them. However, the inclusion_tag() shortcut is not designed to
handle that case. But that's fine. It's a shortcut for one particular
common case. You aren't using that case, so it's the wrong tool for that
job. Write a normal template tag and you can handle the argument
processing however you like. That's documented in the template tags for
Python programmers documentation.
Regards,
Malcolm
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