On Tue, Nov 7, 2017 at 6:28 AM C. Kirby <[email protected]> wrote: > You have two choices. One would be to use the relatively new Channels > feature, which allows you to keep a communication stream open so that you > would have the processing page show until the sever notified the client > that it was done and sent the data. I've not worked with Channels much, so > if you have questions about that you can follow up to this list. > > The other option is to have a model that stores the result of the > calculation. Example > > class CalcResult(models.Model): > result = models.IntegerField(blank=True, null=True) > > When the user submits the parameters you would create a new instance of > this class: > > current_calc = CalcResult.objects.create() > > Now that you have that object you can pass the pk back to your processing > view. Inside the processing view you can use javascript to poll the server > with a view that checks if the pk has a result yet. when it gets a result > you load the page that shows the result. > > Be aware that you cannot do this in the standard request/response cycle. > When you send a response the interaction is done. In order to have your > long running calculation work while the client is interacting with the > system via a processing page you will need to use something like Celery or > django-rq to offload the long running calculation. > > Hope this helps, > Kirby > > On Monday, November 6, 2017 at 2:46:41 PM UTC-5, Ruifeng Hu wrote: >> >> Hi All, >> >> I am writing a project, on the submit page, a user submits some >> parameters, then the server side will take a calculation that may take a >> while, I want to add a waiting page to tall users that it is running on the >> server. When the result is ready, it will automatically jump to the result >> page. >> I do not know what I should do to get these! >> >> Is there anyone can help me! >> >> Thank You! >> >> Best, >> Ruifeng Hu >> > It seems to me that the easiest way to do this is via an Ajax call in JavaScript. In my experience channels is very hard to set up. -- --
Adam F. Simon, PhD Calabasas, CA. cell: 818-425-3719 home: 818-880-8405 Feel free to link w/ me: LinkedIn -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAH-jdcwmGAzDa_1uSAHySxMEpMwf%2BpfGczKtNL6Y0iZFDpMOMg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
