On Apr 20, 11:35 am, Allen Machary <allen.mach...@gmail.com> wrote:
> Hellow..
> I have a problem on django signal and instances.
> i have a right some code that runs a function after a certain model is
> created but could not use the instace filter
>
> Help
>
> def send_sms_notifications(sender, instance, created, **kwargs): #get
> sender, instance, created
> # TODO: Lookup the reporters based on the sample point and
> # figure out who to send to, what to send
> # print sender.notes
>
> reporter = instance.taken_by
> point = instance.sampling_point
>
> # A temporary SMS Response
> # TODO: Auto generate response SMS.
> msg = "Your sample data is submitted sucessfully.!"
> # sending an sms to a submitter.
> thread = Thread(target=_send_sms,args=(reporter.id, msg ))
> thread.start()
>
> # create massage for the authorised testers.
> msg2 = "Test taken at site %s - %s." %
> (instance.sampling_point.wqmarea, instance.sampling_point)
> # ss =
> Sample.objects.filter(taken_by=reporter,sampling_point=instance.sampling_po
> int,
> date_received=instance.date_received)
>
> # The instance is displayed here.
> print '############### %s ########' % (instance)
> # I can get the instace id. OK
> print '<<<<<<<<<<<<<<<<<<< %d' % (instance.id)
> sample_id = instance.id
>
> m_values = MeasuredValue.objects.filter(sample__id = sample_id)
>
> # I NEED TO GET MEASUREDVALUE WITH RESPECT TO THE SAMPLE
> # NO DATA IS RETURN HERE...
> print '----------------- %s ' % (m_values)
> for m_value in m_values:
> print "<<<<<<<<<<<<<< %s:%s" % (m_value.parameter.test_name,
> m_value.value)
> msg2 += " %s:%s" % (m_value.parameter.test_name,
> m_value.value)
>
> msg2 += '. Comment: %s'%(instance.notes)
>
> # figure out who to send sms to in the notifation table.
> notices = SmsNotification.objects.filter(sampling_point = point)
> for notice in notices:
> reporter = notice.authorised_sampler
> # TODO: generate a sms according the the authorised tester.
> # this is temp sms to authorised sampler
> # send the sms
> thread = Thread(target=_send_sms,args=(reporter.id, msg2 ))
> thread.start()
>
> def _send_sms(reporter_id, message_text):
> data = {"uid": reporter_id,
> "text": message_text
> }
> encoded = urllib.urlencode(data)
> headers = {"Content-type": "application/x-www-form-urlencoded",
> "Accept": "text/plain"}
> try:
> conn = httplib.HTTPConnection("localhost:8000") # TODO: DON'T
> HARD CODE THIS!
> conn.request("POST", "/ajax/messaging/send_message", encoded,
> headers)
> response = conn.getresponse()
> except Exception, e:
> # TODO: better error reporting
> raise
>
> # Register to receive signals each time a Sample is saved
> post_save.connect(send_sms_notifications, sender=Sample)
>
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Do your MeasuredValue instances get saved after the Sample is saved?
If so, this is likely the problem as they wouldn't exist at the point
where the signal is being called.
If that is the case, I'm not really sure there's a practical way to do
what you want and still use signals. It may be better to just make
the call to this function immediately after you save the models.
--
G
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