[Django]-Django templates: testing if variable is in list or dict

by

41👍

In Django 1.2, you can just do

{% if var in the_list %}

as you would in Python.

Otherwise yes, you will need a custom filter – it’s a three-liner though:

@register.filter
def is_in(var, obj):
    return var in obj
👤Daniel Roseman

6👍

Want to pass a comma separated string from the template? Create a custom templatetag:

from django import template
register = template.Library()

@register.filter
def in_list(value, the_list):
    value = str(value)
    return value in the_list.split(',')

You can then call it like this:

{% if 'a'|in_list:'a,b,c,d,1,2,3' %}Yah!{% endif %}

It also works with variables:

{% if variable|in_list:'a,b,c,d,1,2,3' %}Yah!{% endif %}
👤dotcomly

-3👍

In Django 3…
It’s simply by:

someHtmlPage.html

<html>
    {%if v.0%}
        <p>My string {{v}}</p>
    {%else%}
        <p>My another typy {{v}}</p>
    {%endif%}
</html>
👤Daniel Mandelblat

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