JimT wrote:
> I've searched pretty much everywhere and I still can't get my simple
> template tag working.
>
> It's supposed to simply return a list of strings which I can output in
> a template for loop. Currently it takes no parameters but eventually
> I'd like to pass it a string to format the URL as well however it
> doesn't seem to be rendering. Here's the tag code:
>
> import datetime
> from django.template import Library, Node
>
> register = Library()
>
> class DaysListNode(Node):
> def render(self, context):
> today = datetime.date.today()
> days_list = []
> for i in range(7):
> day_delta = datetime.timedelta(days=i)
> the_date = today + day_delta
>
> # Locale's abbreviated weekday name.
> day_name = the_date.strftime("%a")
>
> # Day of the month as a decimal number [01,31]
> day_num = the_date.strftime("%d").lstrip("0")
>
> days_list.insert(i, day_name + '<br />' + day_num)
>
> context['days_list'] = days_list
> return ''
>
> def calendar_days(parser, token):
> return DaysListNode()
>
> register.tag('calendar_days', calendar_days)
>
>
> And here's the way I'm calling it in the template:
>
> {% load calendar_days %}
> ... lots of XHTML
>
> <ul class="date">
> {% for day in calendar_days.days_list %}
> <li class="{% if forloop.first %}active{% endif %}"><a href="#">
> {{ day }}</a></li>
> {% endfor %}
> </ul>
>
> It doesn't seem to work if I put {% for day in calendar_days %} or {%
> for day in days_list %} either.
>
> Any help would be appreciated,
>
> Thanks
You're not calling the template tag anywhere. The way you've written
it, it inserts a variable called 'days_list' into the context. But you
actually have to call the tag first:
{% calendar_days %}
Then you can do
{% for day in days_list %}
One other point: you're manually escaping the HTML in the tag, for
some reason, which will actually result in it being escaped *twice*
when it's rendered. In fact you want to do the opposite - mark the
output as safe, so it doesn't get escaped and your <br/>s actually get
rendered as line breaks. You want this:
from django.utils.safestring import mark_safe
...
days_list.insert(i, mark_safe(day_name + '<br /
>' + day_num))
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