Basic question about variables...

[lurendrejer]

Im fiddling with a 'version 2' of my z-wave command subflow...
I've created a few variables but how on earth do i get these inside an object?

I have tried quite a few things from the node-red documentation, without much luck...
I know i'll have to translate 'on' to a Bool, etc. - but first I have to find out how to use the variables.

//argh-test

let Message = {
payload: {
mode: "CCAPI",
cc: "$commandtype",
method: "set",
params: $env('state'),
endpoint: "${endpoint}"
}
}
return Message

[lurendrejer]

Did this instead.. I don't know if it impacts performance or if it just (more or less) gets converted to the above, when used by NR.

[marcus-j-davies]

Hey,

In a JS function node you can get the variables declared in your subflow as follow.

let CommandClass = env.get("commandclass");
let Method = env.get("classMethod");
let Value = env.get("state");
let EP = parseInt(env.get("endpoint"));
let Node = parseInt(env.get("node"));

let Message = {
    payload: {
        mode: "CCAPI",
        node: Node,
        cc: CommandClass,
        method: Method,
        params: [Value], /* remember to keep params as an array */
        endpoint: EP
    }
}
return Message

We have an awesome node being introduced soon (Known as the cmd-factory) - that will generate commands for you (given a set of inputs).

[lurendrejer]

yup, i know - but i was already creating a setpoint-thermostat selection thingy - and wanted to tinker :)

[marcus-j-davies]

it wont take you long until realise you have an addiction problem 🤣

[marcus-j-davies]

Oh, and in answer to you performance worry.
node-red is ridiculously optimised - I wouldn't worry.

My entire home security system - is run by, managed by and monitored by node red with various motion sensors, door sensors, keypad door entry devices etc etc - all runs without a hitch.

[lurendrejer]

I knew it would be a minimal performance penalty, if any.
But i guess the gui-draggy-droppe stuff gets converted to js in some way, in the end.

[lurendrejer]

And, yes - NR is stupidly fast...