Hey,
I want to check if the current item I am printing in one list is also
available in another list. Basically I have a list of books and I want
to check if the user already has a particular book in their profile so
that instead of it saying "Add Book", it says "Remove Book".
At the moment I am trying something like this:
################
# File: custom_filters.py
################
@register.filter
def IN(value,arg): return value in arg
################
################
# File: /books/views.py
################
{% for book in books %}
{% if book.id|IN:user_profile.books.all %}
<p>Remove Book</p>
{% else %}
<p>Add Book</p>
{% endif %}
{% endfor %}
################
user_profile has a many-to-many field relationship so that it gets a
list of all the books the user has.
Basically, I get an error that tells me:
Invalid Filter: 'IN'
Is there a better way of checking if the current item in the for loop
is present in another list?
Cheers,
Chris
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
