How to check (in template) if user belongs to a group

Question

How to check in template whether user belongs to some group?

It is possible in a view which is generating the template but what if I want

Answer 1

I'd say that the best way is:

yourapp/templatetags/templatetagname.py

from django import template

register = template.Library()

@register.filter(name='has_group')
def has_group(user, group_name):
    return user.groups.filter(name=group_name).exists()

yourapp/templates/yourapp/yourtemplate.html:

{% load has_group %}

{% if request.user|has_group:"mygroup" %} 
    
User belongs to my group
{% else %}
    
User does not belong to my group
{% endif %}

EDIT: added line with template tag loading as was advised in comments.

EDIT2: fixed minor typo.