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-rw-r--r--middleware.py68
1 files changed, 0 insertions, 68 deletions
diff --git a/middleware.py b/middleware.py
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-from django.conf import settings
-from django import http
-from django.urls import reverse, resolve,Resolver404
-"""Non-standard django middleware is loaded from this file.
-"""
-
-class SmartAppendSlashMiddleware(object):
- """
- "SmartAppendSlash" middleware for taking care of URL rewriting.
-
- This middleware appends a missing slash, if:
- * the SMART_APPEND_SLASH setting is True
- * the URL without the slash does not exist
- * the URL with an appended slash does exist.
- Otherwise it won't touch the URL.
- """
-
- def process_request(self, request):
- '''Called for every url so return as quickly as possible
- Append a slash if SMART_APPEND_SLASH is set, the resulting URL resolves and it doesn't without the /
- '''
- if not settings.SMART_APPEND_SLASH:
- return None
-
- if request.path.endswith('/'):
- return None
-
- if request.path.endswith('_edit'):
- return None
-
- host = http.HttpRequest.get_host(request)
- old_url = [host, request.path]
- if _resolves(old_url[1]):
- return None
-
- # So: it does not resolve according to our criteria, i.e. _edit doesn't count
- new_url = old_url[:]
- new_url[1] = new_url[1] + '/'
- if not _resolves(new_url[1]):
- return None
- else:
- if settings.DEBUG and request.method == 'POST':
- # replace this exception with a redirect to an error page
- raise RuntimeError("You called this URL via POST, but the URL doesn't end in a slash and you have SMART_APPEND_SLASH set. Django can't redirect to the slash URL while maintaining POST data. Change your form to point to %s%s (note the trailing slash), or set SMART_APPEND_SLASH=False in your Django settings." % (new_url[0], new_url[1]))
- if new_url != old_url:
- # Redirect
- if new_url[0]:
- newurl = "%s://%s%s" % (request.is_secure() and 'https' or 'http', new_url[0], new_url[1])
- else:
- newurl = new_url[1]
- if request.GET:
- newurl += '?' + request.GET.urlencode()
- return http.HttpResponsePermanentRedirect(newurl)
-
- return None
-
-def _resolves(url):
- try:
- # If the URL does not resolve, the function raises a Resolver404 exception (a subclass of Http404)
- match = resolve(url)
- # this will ALWAYS be resolved by expopages because it will produce pagenotfound if not the thing asked for
- # so handle this in expopages, not in middleware
- return True
- except Resolver404:
- return False
- except:
- print(url)
- raise