How can you selectively remove certain event types from the recent activity list?

Hey guys, I came up with a workaround to solve this issue. Basically I created a custom template filter (filter_recent_activity) and give it as input the describe variable in activity.html:

{% load extra_tags %}
{% load humanize %}
{% load extra_tags %}
{% load filter_recent_activity %}

{% if describe|valid_activity %}
<div class="action_container">
    <div class="action_body">
        {{ describe }}
    </div>
    <div class="action_date" style="text-align: right;">
        {% diff_date action.action_date  %}
    </div>
</div>
{% endif %}

With some simple text processing I was able to determine what activity was listed (below is the code for my custom template filter (which was added to the templatetags folder with filename filter_recent_activity.py)):

from django import template
from django.template.defaultfilters import stringfilter

register = template.Library()
@register.filter
@stringfilter
def valid_activity(full_activity_statement):
    fas = str(full_activity_statement)

    loc01   = fas.find('</a>') + 4
    chunk01 = fas[loc01:]
    loc02   = chunk01.find('<a')
    if loc02 == -1:
            chunk02 = chunk01
    else:
            chunk02 = chunk01[:loc02]

    if 'logged' in chunk02:
            activity = False
    elif 'deleted' in chunk02:
            activity = False
    else:
            activity = True

    return activity

Basically, the describe variable is broken down to remove links and question titles. In essence, all you are left with is the core of the activity (i.e. logged on, edited, awarded badge, etc.), and using simple if or statements you can prevent certain activities from showing.

• I do understand that this is inefficient since it adds a layer of code to deal with a problem that should be solved instead by taking away some code. On this note, I ask to someone who might have a feel for this kind of stuff, how much more inefficient did I make the code?