django1/django/contrib/staticfiles/handlers.py

76 lines
2.6 KiB
Python

import urllib
from urlparse import urlparse
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.core.handlers.wsgi import WSGIHandler
from django.contrib.staticfiles import utils
from django.contrib.staticfiles.views import serve
class StaticFilesHandler(WSGIHandler):
"""
WSGI middleware that intercepts calls to the static files directory, as
defined by the STATIC_URL setting, and serves those files.
"""
def __init__(self, application, base_dir=None):
self.application = application
if base_dir:
self.base_dir = base_dir
else:
self.base_dir = self.get_base_dir()
self.base_url = urlparse(self.get_base_url())
super(StaticFilesHandler, self).__init__()
def get_base_dir(self):
return settings.STATIC_ROOT
def get_base_url(self):
if not settings.STATIC_URL:
raise ImproperlyConfigured("You're using the staticfiles app "
"without having set the STATIC_URL setting. Set it to "
"URL that handles the files served from STATIC_ROOT.")
if settings.DEBUG:
utils.check_settings()
return settings.STATIC_URL
def _should_handle(self, path):
"""
Checks if the path should be handled. Ignores the path if:
* the host is provided as part of the base_url
* the request's path isn't under the media path (or equal)
"""
return (self.base_url[2] != path and
path.startswith(self.base_url[2]) and not self.base_url[1])
def file_path(self, url):
"""
Returns the relative path to the media file on disk for the given URL.
"""
relative_url = url[len(self.base_url[2]):]
return urllib.url2pathname(relative_url)
def serve(self, request):
"""
Actually serves the request path.
"""
return serve(request, self.file_path(request.path), insecure=True)
def get_response(self, request):
from django.http import Http404
if self._should_handle(request.path):
try:
return self.serve(request)
except Http404, e:
if settings.DEBUG:
from django.views import debug
return debug.technical_404_response(request, e)
return super(StaticFilesHandler, self).get_response(request)
def __call__(self, environ, start_response):
if not self._should_handle(environ['PATH_INFO']):
return self.application(environ, start_response)
return super(StaticFilesHandler, self).__call__(environ, start_response)