Out of all the handy filtery things that Django comes with, surprisingly it doesn't have one for checking if a string is contained within another.
Don't worry, thats easy enough to implement.
In a new template tag file:
from django import template
register = template.Library()
@register.filter()
def contains(value, arg):
"""
Usage:
{% if text|contains:"http://" %}
This is a link.
{% else %}
Not a link.
{% endif %}
"""
return arg in value Now just make sure the tag file is loaded in the template before using.
