Server- how do I trigger event from one namespace to other??

[rmControls]

I have a two namespace I want to trigger event on second namespace once the first event completed... (server side)

I tried like this but didnt worked....

(in simple words receive event in one namespace and emit to another namespace for another group of people...)

class FistNameSpace(socketio.AsyncNamespace):
    async def on_connect(self, sid):
        pass
        #your connection code...

    async def on_first_action(self, sid, data):
        # your code
        result = some_function(data)
        SecondNameSpace().trigger_second_action(result)

class SecondNameSpace(socketio.AsyncNamespace):
    async def on_connect(self, sid):
        pass
        #your connection code...

    async def trigger_second_action(self, data):
        # your code
       await self.emit('my_event', data, room=myroom)

is this correct way to do it??

[miguelgrinberg]

This isn't a good way to think about it. The handlers that you have on your namespace classes are triggered by clients, they are not supposed to be triggered internally in the server. The second action that you need to happen should be a regular function or method, not an event handler.

[rmControls]

Yes, I understand... but I have need to trigger second namespace event from server side... How to do it.?
Ex: there are two different group of people connected to two different namespace based on their role... if person from first group trigger specific event then I want to broadcast some data to second group....

can you please advice correct way to achieve it??

[miguelgrinberg]

def do_second_action(ns, data):
    await ns.emit('my_event', data, room=myroom)

class FistNameSpace(socketio.AsyncNamespace):
    async def on_connect(self, sid):
        pass
        #your connection code...

    async def on_first_action(self, sid, data):
        # your code
        result = some_function(data)
        do_second_action(self, result)

class SecondNameSpace(socketio.AsyncNamespace):
    async def on_connect(self, sid):
        pass
        #your connection code...

    async def trigger_second_action(self, data):
        # your code
       do_second_action(self, data)

[rmControls]

I am sorry I got confused with your example.... you called do_second_action function on both first and second namespace and no where called trigger_second_action event. if I assume my_event needs to replace with trigger_second_action at the top then it will becomes circular function...

also on_first_action sending self class to do_second_action function then how its been pointed to second namespace??

Sorry can you please explain a bit...

[miguelgrinberg]

Sorry, there was a small omission in my example:

def do_second_action(ns, data):
    await ns.emit('my_event', data, room=myroom, namespace='/second-namespace')

It does not matter which namespace object you use, you can always specify the namespace explicitly.