check for presence in a list django template

Question

I want to check if a value belongs to a list in django template. Something like this

{% if value in ['Pass','Fail'] %}

How can I achieve this?

Answer 1

I don't think that you can define a list directly in the template. You could pass a list to the template and do

{% if value in my_list %}

For example:

{% if name in 'foo,bar' %}
    bla
{% endif %}

---

Alternatively, you could write a template tag which takes parameters like this:

{% ifinlist value "val1,val2,val3" %}

Answer 2

You could write the if condition as

{% if value in 'Pass,Fail' %}

No need of template tag or list from backend

Answer 3

Django Template:

{% value|ifinlist:"val1,val2,val3" %}

Template Tag:

from django import template

register = template.Library()

@register.filter(name='ifinlist')
def ifinlist(value, list):
    return value in list