django template system, calling a function inside a model

Question

I want to call a function from my model at a template such as:

class ChannelStatus(models.Model):
 ..............................
 .........................         


        

Answer 1

You can't call a function with parameters from the template. You can only do this in the view. Alternatively you could write a custom template filter, which might look like this:

@register.filter
def related_deltas(obj, epk):
    return obj.get_related_deltas(epk)

So now you can do this in the template:

{% for i in channel_status_list %}
  {{ i|related_deltas:3 }}
{% endfor %}