Hi,
I think the simple
{% if entry.DOB %} {{ entry.DOB|age }}{% else %} N/A {% endif %}
should work. Or, the other way around:
{% if not entry.DOB %} ...
You could also try testing in your filter:
def age(bday, d=None):
if bday is None:
return None
....
and use the default_if_none filter
{{ entry.DOB|age|default_if_none:"N/A" }}
This, however, doesn't seem to make sense:
>
> def detail(request, last_name, first_name):
> r = get_object_or_404(Rep, Last_Name=last_name,
> First_Name=first_name)
> if r.DOB == None:
> r.DOB = NULLage
> return render_to_response('Government/repsSingle.html', {'entry':
> r, 'NULLage': NULLage})
>
> The in the template:
>
> {% if NULLage %}
NULLage is never set by your test in the view, seems like it's a
constant value, and the if in the template would always evaluate the
same way (be it True or False).
HTH,
Nuno
On Wed, May 12, 2010 at 6:06 PM, Nick <[email protected]> wrote:
> I am using a custom template tag called calculate age to produce an
> age in numbers based on a filter for a template tag.
>
> Here is the tag:
>
> def age(bday, d=None):
> if d is None:
> d = datetime.datetime.now()
> return (d.year - bday.year) - int((d.month, d.day) < (bday.month,
> bday.day))
>
> register.filter('age', age)
>
> here is how it is used in a template:
>
> {{ entry.DOB|age }} # that produces an age
>
>
> Here is the problem, not all of the entries in my DB have a date of
> birth (henceforth known as DOB).
>
> This raises and error.
>
> I have tried to get around this many different ways. Here are few:
>
> {% ifequal entry.DOB None %} N/A {% else %} {{ entry.DOB|age }} {%
> endif %}
>
> {% ifequal entry.DOB "None" %} N/A {% else %} {{ entry.DOB|age }} {%
> endif %}
>
> {% if entry.DOB == None #I have custom operators set up and this logic
> works in the shell but not in the template %} N/A {% else %}
> {{ entry.DOB|age }} {% endif %}
>
> {% if entry.DOB == 'None' %} N/A {% else %} {{ entry.DOB|age }} {%
> endif %}
>
> I've even tried it in my view:
>
>
> This is a good grief sort of error and is making my brain blood boil.
>
>
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