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111 | from django.utils import feedgenerator
from django.conf import settings
from django.http import HttpResponse
from django.utils.feedgenerator import Atom1Feed
def render_feed(feed):
feedgen = feed.get_feed()
response = HttpResponse(mimetype=feedgen.mime_type)
feedgen.write(response, 'utf-8')
return response
def add_domain(domain, url, prefix):
if url.startswith('/'):
url = url[1:]
if not url.startswith('http://'):
if prefix:
url = u'%s/%s/%s' % (domain, prefix, url)
else:
url = u'%s/%s' % (domain, url)
return url
class EasyFeed(object):
item_pubdate = None
item_enclosure_url = None
feed_type = Atom1Feed
def __init__(self, feed_url, domain='', prefix=''):
self.domain = domain
if not self.domain:
import urlparse
v = urlparse.urlparse(feed_url)
self.domain = v[0] + '://' + v[1]
if not self.domain.startswith('http://'):
self.domain = 'http://' + self.domain
if self.domain.endswith('/'):
self.domain = self.domain[:-1]
self.feed_url = feed_url
self.prefix = prefix
def __get_dynamic_attr(self, attname, obj=None, default=None):
value = ''
try:
attr = getattr(self, attname)
except AttributeError:
value = default
else:
if callable(attr):
# Check func_code.co_argcount rather than try/excepting the
# function and catching the TypeError, because something inside
# the function may raise the TypeError. This technique is more
# accurate.
if hasattr(attr, 'func_code'):
argcount = attr.func_code.co_argcount
else:
argcount = attr.__call__.func_code.co_argcount
if argcount == 2: # one argument is 'self'
value = attr(obj)
else:
value = attr()
if isinstance(value, str):
value = unicode(value, settings.DEFAULT_CHARSET)
return value
def get_feed(self):
"""
Returns a feedgenerator.DefaultFeed object, fully populated, for
this feed.
"""
feed = self.feed_type(
title = self.__get_dynamic_attr('title'),
link = add_domain(self.domain, self.__get_dynamic_attr('link', default=''), self.prefix),
description = self.__get_dynamic_attr('description'),
language = settings.LANGUAGE_CODE.decode(),
feed_url = add_domain(self.domain, self.feed_url, self.prefix),
author_name = self.__get_dynamic_attr('author_name'),
author_link = self.__get_dynamic_attr('author_link'),
author_email = self.__get_dynamic_attr('author_email'),
)
for item in self.items():
link = add_domain(self.domain, self.__get_dynamic_attr('item_link', item), self.prefix)
enc = None
enc_url = self.__get_dynamic_attr('item_enclosure_url', item)
if enc_url:
enc = feedgenerator.Enclosure(
url = enc_url.decode('utf-8'),
length = str(self.__get_dynamic_attr('item_enclosure_length', item)).decode('utf-8'),
mime_type = self.__get_dynamic_attr('item_enclosure_mime_type', item).decode('utf-8'),
)
author_name = self.__get_dynamic_attr('item_author_name', item)
if author_name is not None:
author_email = self.__get_dynamic_attr('item_author_email', item)
author_link = self.__get_dynamic_attr('item_author_link', item)
else:
author_email = author_link = None
feed.add_item(
title = self.__get_dynamic_attr('item_title', item),
link = link,
description = self.__get_dynamic_attr('item_description', item),
unique_id = link,
enclosure = enc,
pubdate = self.__get_dynamic_attr('item_pubdate', item),
author_name = author_name,
author_email = author_email,
author_link = author_link,
)
return feed
def items(self):
raise Exception, 'Not Implemented'
|
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