我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用django.http.HttpResponseNotModified()。
def serve(self, request, path): # the following code is largely borrowed from `django.views.static.serve` # and django-filetransfers: filetransfers.backends.default fullpath = os.path.join(settings.PRIVATE_MEDIA_ROOT, path) if not os.path.exists(fullpath): raise Http404('"{0}" does not exist'.format(fullpath)) # Respect the If-Modified-Since header. statobj = os.stat(fullpath) content_type = mimetypes.guess_type(fullpath)[0] or 'application/octet-stream' if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'), statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]): return HttpResponseNotModified(content_type=content_type) response = HttpResponse(open(fullpath, 'rb').read(), content_type=content_type) response["Last-Modified"] = http_date(statobj[stat.ST_MTIME]) # filename = os.path.basename(path) # response['Content-Disposition'] = smart_str(u'attachment; filename={0}'.format(filename)) return response
def serve(self, request, file_obj, **kwargs): fullpath = file_obj.path # the following code is largely borrowed from `django.views.static.serve` # and django-filetransfers: filetransfers.backends.default if not os.path.exists(fullpath): raise Http404('"%s" does not exist' % fullpath) # Respect the If-Modified-Since header. statobj = os.stat(fullpath) content_type_key = 'mimetype' if LTE_DJANGO_1_4 else 'content_type' response_params = {content_type_key: self.get_mimetype(fullpath)} if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'), statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]): return HttpResponseNotModified(**response_params) response = HttpResponse(open(fullpath, 'rb').read(), **response_params) response["Last-Modified"] = http_date(statobj[stat.ST_MTIME]) self.default_headers(request=request, response=response, file_obj=file_obj, **kwargs) return response
def process_response(self, request, response): """ Calculate the ETag, if needed. """ if settings.USE_ETAGS: if response.has_header('ETag'): etag = response['ETag'] elif response.streaming: etag = None else: etag = '"%s"' % hashlib.md5(response.content).hexdigest() if etag is not None: if (200 <= response.status_code < 300 and request.META.get('HTTP_IF_NONE_MATCH') == etag): cookies = response.cookies response = http.HttpResponseNotModified() response.cookies = cookies else: response['ETag'] = etag return response
def _not_modified(request, response=None): new_response = HttpResponseNotModified() if response: # Preserve the headers required by Section 4.1 of RFC 7232, as well as # Last-Modified. for header in ('Cache-Control', 'Content-Location', 'Date', 'ETag', 'Expires', 'Last-Modified', 'Vary'): if header in response: new_response[header] = response[header] # Preserve cookies as per the cookie specification: "If a proxy server # receives a response which contains a Set-cookie header, it should # propagate the Set-cookie header to the client, regardless of whether # the response was 304 (Not Modified) or 200 (OK). # https://curl.haxx.se/rfc/cookie_spec.html new_response.cookies = response.cookies return new_response
def test_not_modified(self): server = DefaultServer() request = Mock() request.META = {'HTTP_IF_MODIFIED_SINCE': http_date(time.time())} response = server.serve(request, self.filer_file.file) self.assertTrue(isinstance(response, HttpResponseNotModified))
def _not_modified(request, response=None): if response: # We need to keep the cookies, see ticket #4994. cookies = response.cookies response = HttpResponseNotModified() response.cookies = cookies return response else: return HttpResponseNotModified()
def staticfiles(request, file): """ Simple view for serving static files directly from STATICFILES_DIRS. Does not allow subdirectories. Does do If-Modified-Since, though. Based on `django.views.static.serve`. """ if '/..\\' in file: raise Http404 if posixpath.normpath(file) != file: raise Http404 for static_file_dir in settings.STATICFILES_DIRS: fullpath = os.path.abspath(os.path.join(static_file_dir, file)) if not fullpath.startswith(static_file_dir): raise Http404 try: st = os.stat(fullpath) except FileNotFoundError: continue break else: raise Http404 if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'), st.st_mtime, st.st_size): return HttpResponseNotModified() content_type, encoding = mimetypes.guess_type(fullpath) content_type = content_type or 'application/octet-stream' response = FileResponse(open(fullpath, 'rb'), content_type=content_type) response['Last-Modified'] = http_date(st.st_mtime) if stat.S_ISREG(st.st_mode): response['Content-Length'] = st.st_size if encoding: response['Content-Encoding'] = encoding return response
def serve(private_file): # Support If-Last-Modified mtime = private_file.modified_time.timestamp() size = private_file.size if not was_modified_since(private_file.request.META.get('HTTP_IF_MODIFIED_SINCE'), mtime, size): return HttpResponseNotModified() # As of Django 1.8, FileResponse triggers 'wsgi.file_wrapper' in Django's WSGIHandler. # This uses efficient file streaming, such as sendfile() in uWSGI. # When the WSGI container doesn't provide 'wsgi.file_wrapper', it submits the file in 4KB chunks. response = FileResponse(private_file.open()) response['Content-Type'] = private_file.content_type response['Content-Length'] = size response["Last-Modified"] = http_date(mtime) return response
def sidebar_view(func=None, select_related=None): if func is None: def wrapped(inner_func): return sidebar_view(inner_func, select_related) return wrapped @wraps(func) def with_ajax_check(request, *args, **kwargs): request.changeset = ChangeSet.get_for_request(request, select_related) ajax = request.is_ajax() or 'ajax' in request.GET if not ajax: request.META.pop('HTTP_IF_NONE_MATCH', None) response = func(request, *args, **kwargs) if ajax: if isinstance(response, HttpResponseRedirect): return render(request, 'editor/redirect.html', {'target': response['location']}) if not isinstance(response, HttpResponseNotModified): response.write(render(request, 'editor/fragment_nav.html', {}).content) response['Cache-Control'] = 'no-cache' patch_vary_headers(response, ('X-Requested-With', )) return response if isinstance(response, HttpResponseRedirect): return response response = render(request, 'editor/map.html', {'content': response.content}) response['Cache-Control'] = 'no-cache' patch_vary_headers(response, ('X-Requested-With', )) return response return with_ajax_check
