I have global variable global.set("obed07", {payload: {template: "foo",Total:555, Today:0, Yesterday:0}}); How I can change it inside the function block. I am using following code now. var obed = global.get("obed07"); obed.payload.template="bar"; global.set("obed07",obed); Is there some oth…

Is not that state already available in mqtt from the Sonoff. Why do you need to store it locally too?

I am trying to keep the info about Sonoff state in the memory, than compare it with the incoming messages and the result I am sending to the ui switch node. For example I am sending mqtt cmnd/sonoffs/STATE request to get responses from all switches on the network. I have default switch state values…

Do not the Sonoff devices send their switch state to MQTT every time it changes? If you drive your dashboard switch from that MQTT topic then you will not need to poll them.

What about situation when network is down? What about situation when some of the devices does not respond (failure)?

What about situation when network is down? What about situation when some of the devices does not respond (failure)? Then your values in memory would also be wrong... If you only listen to the msgs from the actor like Colin suggests, it's easier and you can also switch the actor from any source …

If the msg from listener does not come back, then I will not keep the "last known values" as "actual values" and switches will be set to default (switch disabled). But I am ready to "re-think"...

For the network down you should use the LWT mqtt topic then you can display that on the dashboard and set the switches as you need.

[image] Colin: LWT mqtt I will study, thanks... What about: Handy Node-Red Date - Scargill's Tech Blog as mentioned above?

I don't know why one would want the current date/time in string form in many places in the flow.

Maybe because strftime formating is not built in NR. But I am not an expert... Discussed here, for example: Date/Time formatting

Changing global variable inside the function node

General

Colin 13 March 2019 15:19 51

That doesn't address what I said, I don't know why one would need the datetime as a string in numerous places in the flows.

Topic		Replies	Views
Global Context being updated when no global.set executed General function-node	17	703	2 December 2022
Using simpler globar variables `RED.f.myVar` Core Development suggestion	40	343	7 June 2026
Error in a function in Node-Re 2.2 not present in previous versoins General	55	2099	30 January 2022
Context variable that (partly) references other context variables dynamically General home-assistant	29	365	20 April 2025
Use part of msg.xxx as name of flow variable to be changed General	13	974	6 October 2020

Changing global variable inside the function node

Related topics