Here's a hack that might work:
def progress():
# when a form is submitted, change progress each second
if request.post_vars:
for i in range(5):
session.progress = i
# Write to the session file and unlock/close it.
session._try_store_in_file(request, response)
print "main:", session.progress
sleep(1)
# Re-open and re-lock the session file.
session.connect()
return "done"
else:
session.progress = -1
return locals()
Note, this is not part of the public API and writing/closing/reconnecting
to the session multiple times per request is not an officially supported
feature.
Anthony
On Tuesday, February 16, 2016 at 6:24:20 PM UTC-5, Anthony wrote:
>
> During a single request, the "session" object is just a copy of the
> session data stored in the session file. Any updates to the session during
> a request are not written back out to the session file until after the
> request has completed. So, in the progress() function, you are not updating
> the session file itself every second, you are only updating that request's
> local copy of the session data. Repeated calls to getprogress() will
> therefore only see the original value from the session.
>
> Anthony
>
> On Tuesday, February 16, 2016 at 4:15:06 PM UTC-5, Alfonso Serra wrote:
>>
>> Im trying to make a progress bar by reading and writing a session
>> variable:
>>
>> There are 2 controllers:
>>
>> Get session.progress
>> def getprogress():
>> print "getprogress:", session.progress
>> return session.progress
>>
>> This one takes 5 seconds to perform and changes session.progress each one.
>> def progress():
>> # when a form is submitted, change progress each second
>> if request.post_vars:
>> for i in range(5):
>> session.progress = i
>> print "main:", session.progress
>> sleep(1)
>> return "done"
>> else:
>> session.progress = -1
>> return locals()
>>
>> At the view, there are two ajax calls. One that triggers "getprogress"
>> each second, and another one that triggers "progress" when a random form is
>> submitted through ajax to avoid redirection.
>>
>> at the browser's console, getprogress only returns -1
>>
>> at the python console i get a log like this:
>> getprogress: -1
>> getprogress: -1
>> main: 0
>> getprogress: -1
>> main: 1
>> getprogress: -1
>> main: 2
>> getprogress: -1
>> main: 3
>> getprogress: -1
>> main: 4
>> getprogress: -1
>>
>> getprogress should be changing since im writing the session variable.
>>
>> If im changing a session variable in a controller why hasnt changed when
>> i ask for it on another one?
>>
>> Should i be using cron jobs or threads to make a progress bar? Whats the
>> best way?
>>
>> Thank you very much.
>>
>>
--
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