def img_tag(environment, value, prefix=''):
if value is None:
return ''
i = memcache.get(value)
if i is None:
i = Image.get(value)
if i:
memcache.add(value, i, 7200)
if i:
return Markup(i.img_tag(prefix))
return ''
def img_url(environment, value):
if value is None:
return ''
i = memcache.get(value)
if i is None:
i = Image.get(value)
if i:
memcache.add(value, i, 7200)
if i:
return Markup(i.url())
return ''
def get_img(request, key, ext):
im = memcache.get(key)
if not im:
im = Image.get(key)
if im:
memcache.add(key, im, 7200)
if im:
headers = Headers()
headers['Content-Type'] = im.content_type
headers['Last-Modified'] = im.modif_time.strftime(HTTP_DATE_FMT)
current_day = datetime.today()
exp_delta = timedelta(days=7)
headers['Expires'] = (current_day + exp_delta).strftime(HTTP_DATE_FMT)
response = Response(im.image, headers=headers)
else:
response = Response(status=304)
return response