Node Red - IF AND OR

Third party integrations Node-RED
1

Hi all, i’m a new in automation and maybe my question is already discussed by i not have find nothing to clearify me.

i try to understand how is possibile che “if al least” my binary_sensor are “on” and check “if all my binary_sensor” are “off”. To explain.
in my flow i have 1 flow variable "flow.alarm.alarm " and i want set this a “true” if al least one of my binary_sensor are in “on” state and set to “off” if all binary_sensor are “off”

Maybe i lose my self in water glass, but for now i’m disoriented. I a web developer with 20 years of experience in nodejs / javascript but i need understand the nodes concept in node-red better.

2

maybe work

image
image737×95 5.88 KB

in the node “get entities” i get all input_boolean.alarm_finestra* and send in msg.payload the array

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image518×538 12 KB

in my node function i check

var entities = msg.payload;
var allTurnedOff = true;

for (var i = 0; i < entities.length; i++) {
    if (entities[i].state !== "off") {
        allTurnedOff = false;
        break;
    }
}

var result = {
    entities: entities,
    all_turn_off: allTurnedOff
};

msg.payload = result;
return msg;

debug recive the new payload with all_turn_off in true o false

3

With just nodes you do it like this:

image
image1390×407 59.7 KB

The Current State nodes have the If field set to true to get two outputs.

4

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5

If I am understanding your question, I am doing something similar with two independent bedroom lamps.

This flow sets a flow variable for the room status. If either light is on, the room status is on.

nr
nr701×214 28.7 KB

Here is the code for the last function node where the room status is set:

var kimStat = flow.get('kimStatus') || 'OFF';       //Default is off
var steveStat = flow.get('steveStatus') || 'OFF';   //Default is off
msg.payload = 'OFF';                                //Default is off

// If either steve's or kim's light is on, the room is on.
if(kimStat == 'ON' || steveStat == 'ON'){
    msg.payload = 'ON';
}

flow.set('roomStatus',msg.payload);
return msg;