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
python类HttpResponseNotModified()的实例源码
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 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 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 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 _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 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 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 _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 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 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 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
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 _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()
