loads a parsed RSS feed (with feedparser) into a variable of choice. Caching by the "cache" template tag.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | from django import template
import feedparser
register = template.Library()
class RssParserNode(template.Node):
def __init__(self, var_name, url=None, url_var_name=None):
self.url = url
self.url_var_name = url_var_name
self.var_name = var_name
def render(self, context):
if self.url:
context[self.var_name] = feedparser.parse(self.url)
else:
try:
context[self.var_name] = feedparser.parse(context[self.url_var_name])
except KeyError:
raise template.TemplateSyntaxError, "the variable \"%s\" can't be found in the context" % self.url_var_name
return ''
import re
@register.tag(name="get_rss")
def get_rss(parser, token):
# This version uses a regular expression to parse tag contents.
try:
# Splitting by None == splitting by spaces.
tag_name, arg = token.contents.split(None, 1)
except ValueError:
raise template.TemplateSyntaxError, "%r tag requires arguments" % token.contents.split()[0]
m = re.search(r'(.*?) as (\w+)', arg)
if not m:
raise template.TemplateSyntaxError, "%r tag had invalid arguments" % tag_name
url, var_name = m.groups()
if url[0] == url[-1] and url[0] in ('"', "'"):
return RssParserNode(var_name, url=url[1:-1])
else:
return RssParserNode(var_name, url_var_name=url)
"""
example usage:
{% load cache %}
{% load rss %}
{% cache 500 rss_display %}
{% get_rss "http://www.freesound.org/blog/?feed=rss2" as rss %}
{% for entry in rss.entries %}
<h1>{{entry.title}}</h1>
<p>
{{entry.summary|safe}}
</p>
<p>
<a href="{{entry.link}}">read more...</a>
</p>
{% endfor %}
{% endcache %}
"""
|
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Comments
django-feedutil and django-template-utils both have almost this exact same feature already. But I have to admit, it's kind of nice as a self-contained snippet.
#
I've edited it slightly, now it can also take a template-variable. For example:
{% get_rss rss_url as rss %}
#
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