How do I perform query filtering in django templates

Question

I need to perform a filtered query from within a django template, to get a set of objects equivalent to python code within a view:

queryset = Modelclass.objects.filter(somekey=foo)

In my template I would like to do

{% for object in data.somekey_set.FILTER %}

but I just can't seem to find out how to write FILTER.

Answer 1

Hello @KARTIK,

Just add an extra template tag like this:

@register.filter
def in_category(things, category):
    return things.filter(category=category)

Then you can do:

{% for category in categories %}
  {% for thing in things|in_category:category %}
    {{ thing }}
  {% endfor %}
{% endfor %}

Hope it helps!!
Thank you!!