Django Real time Notifications

[yingi keme]

I want to know if django supports any real time notifications/communications in web applications.

For instance, if User A makes an update to its model instance, User B should get an instant notification in real time.

Does django provide a mechanism for that?

[Andréas Kühne]

Hi,

You should check out django-channels (https://channels.readthedocs.io/en/stable/) for that. That is a websocket based solution for doing realtime notifications (as long as the users are logged in to the website).

Regards,

Andréas

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[Melvyn Sopacua]

Yes and no.

Django allows you to define signals, one of them being a post_save signal on a Model.

It has no mechanism to notify "User B", as it does not know how to notify User B.

 

But, it has views and urls and browsers have Ajax. So you can poll (not realtime).

 

Django Channels (which is a 3rd party package created by one of Django's core developers) supports websockets. Using websockets one can notify in (near) real time.

 

So in order to do what you want, you need to glue signals to channels, or teach Django Channels how to detect a change in your model.

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Melvyn Sopacua

[yingi keme]

Thanks Andreas. I will check it out

Yingi Kem

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[yingi keme]

Thanks melvyn. I think you nailed it for me.

Thanks again

Yingi Kem

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