[SOLVED] Multiple inputs to one msg function (noob)

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15

I already pointed that out to OP here...


Readable, portable ~(i.e. no external nodes), full control of how & when things occur, self contained (no external switches / changes etc. Each to thier own. I often find a single function node doing several relatively small task is far cleaner than the multiple nodes to achieve the same thing (though not saying that would be the case here)

Inflexible - yes, but to be fair, all I did was add to the original code to achieve the OPs requirement.
He didnt ask for flexible & didnt provide a specification :man_shrugging:

On the flexible point...
However, if lets say the OP had a requirement for any number of unknown topics to sum up & wanted it to be truly flexible he could do this dynamically...

//Premise: Store any value received against its topic & return the sum of them all;
//if topic is empty or == "go", dont store anything, just return the sum
//NOTE: Probably need error handling and type checking but should work if only known types are sent to the node.
//NOTE2: Untested - but probably works :) 
let lookup = context.get("lookup") || {}; //get/create the lookup

if(msg.topic && msg.topic != "go") {
 lookup[msg.topic] = msg.payload;//store this value in lookup against topic
 context.set("lookup", lookup) || {}; //store updated lookup for next time
}

//scan the lookup for every topic value sent & add them up
let sumval = 0;
for (var prop in lookup) {
 let v = lookup[prop];  
 if(v) //if v is "something...
   sumval +=  v; //add it
}

msg.topic = "go";
msg.payload = sumval;

100% flexible - though I suspect this is not really what is wanted either. might prove useful to someone?

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