Send data to users base on database event in Django channels

Question

I have an application in Django that some users can add and update data. these users add or update data with Django standard forms and views.

I want to implement an other app that send new data to all users when a user update or create data in database. i read about Django-channels that can handle web socket, but i can't find something about server or database events in Django-channels.

So how can i send data to users when a database event occur?

Can you add your code or whatever you have implemented so far. — Juniar
– Juniar, Commented Mar 17, 2019 at 23:55
@Junia . I don't have any code for this app yet. i want to find best way first. — Alex Mercer
– Alex Mercer, Commented Mar 18, 2019 at 20:46

Ozgur Akcali · Accepted Answer · 2019-03-17 22:16:55Z

1

You can use Signals to detect database events in Django. Take a look at the signals explained here: https://docs.djangoproject.com/en/2.1/topics/signals/

Basically, you'll be doing something along the lines of:

@receiver(post_save, sender=ModelClass)
def my_model_save(sender, instance, **kwargs):
     # this code will be executed after an instance of ModelClass is saved.
     Group(rate_key).send({
            "text": "my message"
     })

answered Mar 17, 2019 at 22:16

Ozgur Akcali

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