django.http.HttpResponseNotModified - python examples

Here are the examples of the python api django.http.HttpResponseNotModified taken from open source projects. By voting up you can indicate which examples are most useful and appropriate.

17 Examples 7

3 View Complete Implementation : cache.py
Copyright MIT License
Author : bpgc-cte
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

3 View Complete Implementation : cache.py
Copyright Apache License 2.0
Author : drexly
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()

3 View Complete Implementation : simple.py
Copyright BSD 3-Clause "New" or "Revised" License
Author : moggers87
def sendfile(request, filename, **kwargs):
    # Respect the If-Modified-Since header.
    statobj = os.stat(filename)

    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj[stat.ST_MTIME], statobj[stat.ST_SIZE]):
        return HttpResponseNotModified()

    with File(open(filename, 'rb')) as f:
        response = HttpResponse(f.chunks())

    response["Last-Modified"] = http_date(statobj[stat.ST_MTIME])
    return response

3 View Complete Implementation : tests.py
Copyright GNU Affero General Public License v3.0
Author : nesdis
    def test_not_modified(self):
        response = HttpResponseNotModified()
        self.astertEqual(response.status_code, 304)
        # 304 responses should not have content/content-type
        with self.astertRaises(AttributeError):
            response.content = "Hello dear"
        self.astertNotIn('content-type', response)

3 View Complete Implementation : private_media.py
Copyright MIT License
Author : robotichead
    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

0 View Complete Implementation : common.py
Copyright GNU General Public License v2.0
Author : blackye
    def process_response(self, request, response):
        "Send broken link emails and calculate the Etag, if needed."
        if response.status_code == 404:
            if settings.SEND_BROKEN_LINK_EMAILS and not settings.DEBUG:
                # If the referrer was from an internal link or a non-search-engine site,
                # send a note to the managers.
                domain = request.get_host()
                referer = request.META.get('HTTP_REFERER', None)
                is_internal = _is_internal_request(domain, referer)
                path = request.get_full_path()
                if referer and not _is_ignorable_404(path) and (is_internal or '?' not in referer):
                    ua = request.META.get('HTTP_USER_AGENT', '<none>')
                    ip = request.META.get('REMOTE_ADDR', '<none>')
                    mail_managers("Broken %slink on %s" % ((is_internal and 'INTERNAL ' or ''), domain),
                        "Referrer: %s\nRequested URL: %s\nUser agent: %s\nIP address: %s\n" \
                                  % (referer, request.get_full_path(), ua, ip),
                                  fail_silently=True)
                return response

        # Use ETags, if requested.
        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

0 View Complete Implementation : http.py
Copyright GNU General Public License v2.0
Author : blackye
def condition(etag_func=None, last_modified_func=None):
    """
    Decorator to support conditional retrieval (or change) for a view
    function.

    The parameters are callables to compute the ETag and last modified time for
    the requested resource, respectively. The callables are pasted the same
    parameters as the view itself. The Etag function should return a string (or
    None if the resource doesn't exist), whilst the last_modified function
    should return a datetime object (or None if the resource doesn't exist).

    If both parameters are provided, all the preconditions must be met before
    the view is processed.

    This decorator will either past control to the wrapped view function or
    return an HTTP 304 response (unmodified) or 412 response (preconditions
    failed), depending upon the request method.

    Any behavior marked as "undefined" in the HTTP spec (e.g. If-none-match
    plus If-modified-since headers) will result in the view function being
    called.
    """
    def decorator(func):
        @wraps(func, astigned=available_attrs(func))
        def inner(request, *args, **kwargs):
            # Get HTTP request headers
            if_modified_since = request.META.get("HTTP_IF_MODIFIED_SINCE")
            if if_modified_since:
                if_modified_since = parse_http_date_safe(if_modified_since)
            if_none_match = request.META.get("HTTP_IF_NONE_MATCH")
            if_match = request.META.get("HTTP_IF_MATCH")
            if if_none_match or if_match:
                # There can be more than one ETag in the request, so we
                # consider the list of values.
                try:
                    etags = parse_etags(if_none_match or if_match)
                except ValueError:
                    # In case of invalid etag ignore all ETag headers.
                    # Apparently Opera sends invalidly quoted headers at times
                    # (we should be returning a 400 response, but that's a
                    # little extreme) -- this is Django bug #10681.
                    if_none_match = None
                    if_match = None

            # Compute values (if any) for the requested resource.
            if etag_func:
                res_etag = etag_func(request, *args, **kwargs)
            else:
                res_etag = None
            if last_modified_func:
                dt = last_modified_func(request, *args, **kwargs)
                if dt:
                    res_last_modified = timegm(dt.utctimetuple())
                else:
                    res_last_modified = None
            else:
                res_last_modified = None

            response = None
            if not ((if_match and (if_modified_since or if_none_match)) or
                    (if_match and if_none_match)):
                # We only get here if no undefined combinations of headers are
                # specified.
                if ((if_none_match and (res_etag in etags or
                        "*" in etags and res_etag)) and
                        (not if_modified_since or
                            (res_last_modified and if_modified_since and
                            res_last_modified <= if_modified_since))):
                    if request.method in ("GET", "HEAD"):
                        response = HttpResponseNotModified()
                    else:
                        logger.warning('Precondition Failed: %s', request.path,
                            extra={
                                'status_code': 412,
                                'request': request
                            }
                        )
                        response = HttpResponse(status=412)
                elif if_match and ((not res_etag and "*" in etags) or
                        (res_etag and res_etag not in etags)):
                    logger.warning('Precondition Failed: %s', request.path,
                        extra={
                            'status_code': 412,
                            'request': request
                        }
                    )
                    response = HttpResponse(status=412)
                elif (not if_none_match and request.method == "GET" and
                        res_last_modified and if_modified_since and
                        res_last_modified <= if_modified_since):
                    response = HttpResponseNotModified()

            if response is None:
                response = func(request, *args, **kwargs)

            # Set relevant headers on the response if they don't already exist.
            if res_last_modified and not response.has_header('Last-Modified'):
                response['Last-Modified'] = http_date(res_last_modified)
            if res_etag and not response.has_header('ETag'):
                response['ETag'] = quote_etag(res_etag)

            return response

        return inner
    return decorator

0 View Complete Implementation : static.py
Copyright GNU General Public License v2.0
Author : blackye
def serve(request, path, docameent_root=None, show_indexes=False):
    """
    Serve static files below a given point in the directory structure.

    To use, put a URL pattern such as::

        (r'^(?P<path>.*)$', 'django.views.static.serve', {'docameent_root' : '/path/to/my/files/'})

    in your URLconf. You must provide the ``docameent_root`` param. You may
    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
    of the directory.  This index view will use the template hardcoded below,
    but if you'd like to override it, you can create a template called
    ``static/directory_index.html``.
    """
    path = posixpath.normpath(unquote(path))
    path = path.lstrip('/')
    newpath = ''
    for part in path.split('/'):
        if not part:
            # Strip empty path components.
            continue
        drive, part = os.path.splitdrive(part)
        head, part = os.path.split(part)
        if part in (os.curdir, os.pardir):
            # Strip '.' and '..' in path.
            continue
        newpath = os.path.join(newpath, part).replace('\\', '/')
    if newpath and path != newpath:
        return HttpResponseRedirect(newpath)
    fullpath = os.path.join(docameent_root, newpath)
    if os.path.isdir(fullpath):
        if show_indexes:
            return directory_index(newpath, fullpath)
        raise Http404(_("Directory indexes are not allowed here."))
    if not os.path.exists(fullpath):
        raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
    # Respect the If-Modified-Since header.
    statobj = os.stat(fullpath)
    mimetype, encoding = mimetypes.guess_type(fullpath)
    mimetype = mimetype or 'application/octet-stream'
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.st_size):
        return HttpResponseNotModified()
    response = CompatibleStreamingHttpResponse(open(fullpath, 'rb'), content_type=mimetype)
    response["Last-Modified"] = http_date(statobj.st_mtime)
    if stat.S_ISREG(statobj.st_mode):
        response["Content-Length"] = statobj.st_size
    if encoding:
        response["Content-Encoding"] = encoding
    return response

0 View Complete Implementation : static.py
Copyright MIT License
Author : bpgc-cte
def serve(request, path, docameent_root=None, show_indexes=False):
    """
    Serve static files below a given point in the directory structure.

    To use, put a URL pattern such as::

        from django.views.static import serve

        url(r'^(?P<path>.*)$', serve, {'docameent_root': '/path/to/my/files/'})

    in your URLconf. You must provide the ``docameent_root`` param. You may
    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
    of the directory.  This index view will use the template hardcoded below,
    but if you'd like to override it, you can create a template called
    ``static/directory_index.html``.
    """
    path = posixpath.normpath(unquote(path)).lstrip('/')
    fullpath = safe_join(docameent_root, path)
    if os.path.isdir(fullpath):
        if show_indexes:
            return directory_index(path, fullpath)
        raise Http404(_("Directory indexes are not allowed here."))
    if not os.path.exists(fullpath):
        raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
    # Respect the If-Modified-Since header.
    statobj = os.stat(fullpath)
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.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(statobj.st_mtime)
    if stat.S_ISREG(statobj.st_mode):
        response["Content-Length"] = statobj.st_size
    if encoding:
        response["Content-Encoding"] = encoding
    return response

0 View Complete Implementation : views.py
Copyright Apache License 2.0
Author : c3nav
@no_language()
def tile(request, level, zoom, x, y, access_permissions=None):
    if access_permissions is not None:
        enforce_tile_secret_auth(request)
    elif settings.TILE_CACHE_SERVER:
        return HttpResponse('use %s instead of /map/' % settings.TILE_CACHE_SERVER,
                            status=400, content_type='text/plain')

    zoom = int(zoom)
    if not (-2 <= zoom <= 5):
        raise Http404

    cache_package = CachePackage.open_cached()

    # check if bounds are valid
    x = int(x)
    y = int(y)
    minx, miny, maxx, maxy = get_tile_bounds(zoom, x, y)
    if not cache_package.bounds_valid(minx, miny, maxx, maxy):
        raise Http404

    # get level
    level = int(level)
    level_data = cache_package.levels.get(level)
    if level_data is None:
        raise Http404

    # decode access permissions
    if access_permissions is None:
        try:
            cookie = request.COOKIES[settings.TILE_ACCESS_COOKIE_NAME]
        except KeyError:
            access_permissions = set()
        else:
            access_permissions = parse_tile_access_cookie(cookie, settings.SECRET_TILE_KEY)
            access_permissions &= set(level_data.restrictions[minx:maxx, miny:maxy])
    else:
        access_permissions = set(int(i) for i in access_permissions.split('-')) - set([0])

    # build cache keys
    last_update = level_data.history.last_update(minx, miny, maxx, maxy)
    base_cache_key = build_base_cache_key(last_update)
    access_cache_key = build_access_cache_key(access_permissions)

    # check browser cache
    tile_etag = build_tile_etag(level, zoom, x, y, base_cache_key, access_cache_key, settings.SECRET_TILE_KEY)
    if_none_match = request.META.get('HTTP_IF_NONE_MATCH')
    if if_none_match == tile_etag:
        return HttpResponseNotModified()

    data = None
    tile_dirname, last_update_filename, tile_filename, tile_cache_update_cache_key = '', '', '', ''

    # get tile cache last update
    if settings.CACHE_TILES:
        tile_dirname = os.path.sep.join((settings.TILES_ROOT, str(level), str(zoom), str(x), str(y)))
        last_update_filename = os.path.join(tile_dirname, 'last_update')
        tile_filename = os.path.join(tile_dirname, access_cache_key+'.png')

        # get tile cache last update
        tile_cache_update_cache_key = 'mapdata:tile-cache-update:%d-%d-%d-%d' % (level, zoom, x, y)
        tile_cache_update = cache.get(tile_cache_update_cache_key, None)
        if tile_cache_update is None:
            try:
                with open(last_update_filename) as f:
                    tile_cache_update = f.read()
            except FileNotFoundError:
                past

        if tile_cache_update != base_cache_key:
            os.system('rm -rf '+os.path.join(tile_dirname, '*'))
        else:
            try:
                with open(tile_filename, 'rb') as f:
                    data = f.read()
            except FileNotFoundError:
                past

    if data is None:
        renderer = MapRenderer(level, minx, miny, maxx, maxy, scale=2 ** zoom, access_permissions=access_permissions)
        image = renderer.render(ImageRenderEngine)
        data = image.render()

        if settings.CACHE_TILES:
            os.makedirs(tile_dirname, exist_ok=True)
            with open(tile_filename, 'wb') as f:
                f.write(data)
            with open(last_update_filename, 'w') as f:
                f.write(base_cache_key)
            cache.set(tile_cache_update_cache_key, base_cache_key, 60)

    response = HttpResponse(data, 'image/png')
    response['ETag'] = tile_etag
    response['Cache-Control'] = 'no-cache'
    response['Vary'] = 'Cookie'

    return response

0 View Complete Implementation : static.py
Copyright Apache License 2.0
Author : drexly
def serve(request, path, docameent_root=None, show_indexes=False):
    """
    Serve static files below a given point in the directory structure.

    To use, put a URL pattern such as::

        from django.views.static import serve

        url(r'^(?P<path>.*)$', serve, {'docameent_root': '/path/to/my/files/'})

    in your URLconf. You must provide the ``docameent_root`` param. You may
    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
    of the directory.  This index view will use the template hardcoded below,
    but if you'd like to override it, you can create a template called
    ``static/directory_index.html``.
    """
    path = posixpath.normpath(unquote(path))
    path = path.lstrip('/')
    newpath = ''
    for part in path.split('/'):
        if not part:
            # Strip empty path components.
            continue
        drive, part = os.path.splitdrive(part)
        head, part = os.path.split(part)
        if part in (os.curdir, os.pardir):
            # Strip '.' and '..' in path.
            continue
        newpath = os.path.join(newpath, part).replace('\\', '/')
    if newpath and path != newpath:
        return HttpResponseRedirect(newpath)
    fullpath = os.path.join(docameent_root, newpath)
    if os.path.isdir(fullpath):
        if show_indexes:
            return directory_index(newpath, fullpath)
        raise Http404(_("Directory indexes are not allowed here."))
    if not os.path.exists(fullpath):
        raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
    # Respect the If-Modified-Since header.
    statobj = os.stat(fullpath)
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.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(statobj.st_mtime)
    if stat.S_ISREG(statobj.st_mode):
        response["Content-Length"] = statobj.st_size
    if encoding:
        response["Content-Encoding"] = encoding
    return response

0 View Complete Implementation : servers.py
Copyright Apache License 2.0
Author : edoburu
    @staticmethod
    @add_no_cache_headers
    def serve(private_file):
        # Support If-Last-Modified
        if sys.version_info >= (3,):
            mtime = private_file.modified_time.timestamp()
        else:
            mtime = time.mktime(private_file.modified_time.timetuple())
        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.
        if private_file.request.method == 'HEAD':
            # Avoid reading the file at all
            response = HttpResponse()
        else:
            response = FileResponse(private_file.open())
        response['Content-Type'] = private_file.content_type
        response['Content-Length'] = size
        response["Last-Modified"] = http_date(mtime)
        return response

0 View Complete Implementation : common.py
Copyright Apache License 2.0
Author : edisonlz
    def process_response(self, request, response):
        """
        Calculate the ETag, if needed.
        """
        if settings.SEND_BROKEN_LINK_EMAILS:
            warnings.warn("SEND_BROKEN_LINK_EMAILS is deprecated. "
                "Use BrokenLinkEmailsMiddleware instead.",
                PendingDeprecationWarning, stacklevel=2)
            BrokenLinkEmailsMiddleware().process_response(request, response)

        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

0 View Complete Implementation : static.py
Copyright Apache License 2.0
Author : edisonlz
def serve(request, path, docameent_root=None, show_indexes=False):
    """
    Serve static files below a given point in the directory structure.

    To use, put a URL pattern such as::

        (r'^(?P<path>.*)$', 'django.views.static.serve', {'docameent_root' : '/path/to/my/files/'})

    in your URLconf. You must provide the ``docameent_root`` param. You may
    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
    of the directory.  This index view will use the template hardcoded below,
    but if you'd like to override it, you can create a template called
    ``static/directory_index.html``.
    """
    path = posixpath.normpath(unquote(path))
    path = path.lstrip('/')
    newpath = ''
    for part in path.split('/'):
        if not part:
            # Strip empty path components.
            continue
        drive, part = os.path.splitdrive(part)
        head, part = os.path.split(part)
        if part in (os.curdir, os.pardir):
            # Strip '.' and '..' in path.
            continue
        newpath = os.path.join(newpath, part).replace('\\', '/')
    if newpath and path != newpath:
        return HttpResponseRedirect(newpath)
    fullpath = os.path.join(docameent_root, newpath)
    if os.path.isdir(fullpath):
        if show_indexes:
            return directory_index(newpath, fullpath)
        raise Http404(_("Directory indexes are not allowed here."))
    if not os.path.exists(fullpath):
        raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
    # Respect the If-Modified-Since header.
    statobj = os.stat(fullpath)
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.st_size):
        return HttpResponseNotModified()
    content_type, encoding = mimetypes.guess_type(fullpath)
    content_type = content_type or 'application/octet-stream'
    response = CompatibleStreamingHttpResponse(open(fullpath, 'rb'),
                                               content_type=content_type)
    response["Last-Modified"] = http_date(statobj.st_mtime)
    if stat.S_ISREG(statobj.st_mode):
        response["Content-Length"] = statobj.st_size
    if encoding:
        response["Content-Encoding"] = encoding
    return response

0 View Complete Implementation : __init__.py
Copyright Apache License 2.0
Author : edisonlz
def serve (request,
			path,
			docameent_root=None,
			show_indexes=False,
			force_mimetype=None,
		) :

	__argument = request.GET.copy()
	docameent_root = os.path.abspath(docameent_root)

	if force_mimetype is None :
		force_mimetype = __argument.get("force_mimetype", "").strip()

	use_cache = not __argument.has_key("update")

	compress = None
	if __argument.has_key("compress") :
		try :
			compress = list(set([i for i in request.META.get("HTTP_ACCEPT_ENCODING", "").split(",") if i.strip()]) & set(["gzip", "deflate"]))[0]
		except :
			past

	# for multibyte url handling.
	path0 = list()
	for i in path.split("/") :
		path0.append(urllib.unquote(str(i)))

	path = "/".join(path0)
	if path.startswith("http%3A%2F%2F") or path.startswith("http://") :
		fullpath = path
		func_get_media = get_media_external
	else :
		fullpath = os.path.abspath(os.path.join(docameent_root, path))

		# prevent to follow up the prior directory.
		if not fullpath.startswith(docameent_root) :
			response = HttpResponse("", status=401)
			return response

		if not os.path.exists(fullpath) :
			raise Http404, "'%s' does not exist" % fullpath

		if os.path.isdir(fullpath) : # DMS does not support directory index page.
			raise Http404, "Directory indexes are not allowed here."

		func_get_media = get_media_internal

	# for IE series, check 'HTTP_IF_NONE_MATCH' first.
	if not use_cache and \
			request.META.get("HTTP_IF_NONE_MATCH", None) == get_etag(fullpath) :
		return HttpResponseNotModified()
	elif not use_cache and not was_modified_since(request, fullpath) :
		return HttpResponseNotModified()
	else :
		if use_cache :
			# We use cache. If you did not enable the caching,
			# nothing will be happended.
			response = cache.get(get_cache_name(request))
			if response :
				return response

	(cf, mimetype, status_code, last_modified, ) = func_get_media( \
		request,
		fullpath,
		use_cache=use_cache,
		force_mimetype=force_mimetype,
	)

	if status_code == 304 :
		return HttpResponseNotModified()

	response = HttpResponse(
		compress and compress_string(cf.read(), compress) or cf.read(),
		mimetype=force_mimetype and force_mimetype or mimetype
	)
	response["Last-Modified"] = last_modified
	response["Expires"] = rfc822.formatdate(time.mktime((datetime.datetime.now() + datetime.timedelta(seconds=HTTP_EXPIRE_INTERVAL)).timetuple()))
	response["ETag"] = get_etag(fullpath)

	if compress :
		response["Content-Encoding"] = compress

	cache.set(
		get_cache_name(request),
		response, CACHE_MIDDLEWARE_SECONDS,
	)

	return response

0 View Complete Implementation : tests.py
Copyright GNU Affero General Public License v3.0
Author : nesdis
    def test_not_modified_repr(self):
        response = HttpResponseNotModified()
        self.astertEqual(repr(response), '<HttpResponseNotModified status_code=304>')

0 View Complete Implementation : static.py
Copyright MIT License
Author : rizwansoaib
def serve(request, path, docameent_root=None, show_indexes=False):
    """
    Serve static files below a given point in the directory structure.

    To use, put a URL pattern such as::

        from django.views.static import serve

        url(r'^(?P<path>.*)$', serve, {'docameent_root': '/path/to/my/files/'})

    in your URLconf. You must provide the ``docameent_root`` param. You may
    also set ``show_indexes`` to ``True`` if you'd like to serve a basic index
    of the directory.  This index view will use the template hardcoded below,
    but if you'd like to override it, you can create a template called
    ``static/directory_index.html``.
    """
    path = posixpath.normpath(path).lstrip('/')
    fullpath = Path(safe_join(docameent_root, path))
    if fullpath.is_dir():
        if show_indexes:
            return directory_index(path, fullpath)
        raise Http404(_("Directory indexes are not allowed here."))
    if not fullpath.exists():
        raise Http404(_('"%(path)s" does not exist') % {'path': fullpath})
    # Respect the If-Modified-Since header.
    statobj = fullpath.stat()
    if not was_modified_since(request.META.get('HTTP_IF_MODIFIED_SINCE'),
                              statobj.st_mtime, statobj.st_size):
        return HttpResponseNotModified()
    content_type, encoding = mimetypes.guess_type(str(fullpath))
    content_type = content_type or 'application/octet-stream'
    response = FileResponse(fullpath.open('rb'), content_type=content_type)
    response["Last-Modified"] = http_date(statobj.st_mtime)
    if encoding:
        response["Content-Encoding"] = encoding
    return response