Thanks Daniel.. Sorry i'm a bit slow (i do this in my spare time)
I tried what you said, and refered to the doc at http://docs.djangoproject.com/en/dev/howto/custom-template-tags/ for writing custom filters.. so i wrote the code you suggested in my_utils.py, indide a templatetags directory along with an empty __init__.py then added {% load my_utils.py %} to my template before calling the new filter.. but now i get a TemplateSyntaxError: 'my_utils' is not a valid tag library i've searched this forum again but people seem to be using either ready made tag libs or forgot the __init__.py, but nothing i could use... any idea from your side for what i could be doing wrong? by the way... i'm doing this inside google AppEngine.. i hope there's no restriction on custom tags! Thanks again, joune On Sep 1, 2:37 pm, Daniel Roseman <[EMAIL PROTECTED]> wrote: > On Sep 1, 1:05 pm, joune <[EMAIL PROTECTED]> wrote: > > > > > Hi all, > > I'm totally new to Django and i'm starting to play with templates... > > I have a list to display and a separate list of elements considered > > special; > > so i'd like to display the first list with a different style if the > > element is contained in the "specials list" > > > for instance: > > list = [ 'john', 'bill', 'robert', 'greg' ] > > specials = [ 'bill', 'greg' ] > > > then i wish i could use in the template: > > {% for name in list %} > > {% if name in specials %} <b>{{ name }}</b> > > {% else %} {{ name }} > > {% endif %} > > {% endfor %} > > > Unfortunately this 'if' syntax is not supported by the templating > > system. > > Neither can i call a function that would take name as an argument and > > return True or False. > > This seems a very basic use case (much simpler than many advanced > > template features such as 'regroup') yet I can't find the correct way > > to do this, so i believe i must have missed something.. > > > Could someone please help me with this? > > Thanks.. (do not hesitate to ask precisions if my use case is not > > clear..) > > You can't do this with the built-in filters, but it's trivially easy > to write a custom filter that will do it. Something like (untested): > > from django import template > register = template.Library() > > @register.filter > def is_in(value, value_list): > return value in value_list > > and in the template: > > {% if name|is_in:specials %} > > -- > DR. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
