Ah simple_tag for get last update of twitter. How twitter limit the fetch rss so, add cache tag for each 30min ( 60*30) update the twitter. if.
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somemodel/templatetags/twitter.py
from django.template import Library
import urllib
import simplejson
register = Library()
@register.simple_tag
def twitter_status( username ):
url = "http://twitter.com/statuses/user_timeline/%s.json?count=1" % username
file = urllib.urlopen(url)
json_responce = file.read()
twit = simplejson.loads(json_responce)
return "%s" % twit[0]["text"]
====================
yourtemplate.html
{% load cache %}
{% cache 1800 twit %}
{% load twitter %}
<div class="twitter">
@twitter_user: {% twitter_status "twitter_user" %}
</div>
{% endcache %}
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