Is it possible to create a function node that combines two payloads while still having the functionallity?

Several ways. One such way... const REQUIRED_COUNT = 3; var key = msg.topic; if(!key) key = "__nokey__"; var joined = context.get("joined") || {}; //get the memory object || or create new empty object {} joined[key] = msg.payload; //store the payload in the joined object under the key context.se…

[image] ivexy24: combines join node and another function in 1 function Why do you want to do that? It is certainly possible using the node context but is surprisingly tricky so I would not recommend that as a starter for a beginner. But if you really want to do it then have a look at the St…

I get that. My boss gave me an assingment to try and implement that. Im quite new to node red so i dont know how should i do it.I'll check the storing data again and hopefully i manage to complete the task. Thanks for the answer.

The first thing to do is to define exactly what you want the function to do. The Join node has many options and the more of those you need to support the more complex it becomes.

Let me try to be as clear as possible. I want to have 1 custom node that has functionallity of a join node and simple function node. So that when i join them i can access the joined payloads in the custom node and after it write the function.If u understand what i mean great but i think u wont.Im co…

use msg.topic as a property key name and context to store the incoming payload values. var key = msg.topic; if(!key) key = "__nokey__"; var joined = context.get("joined") || {}; //get the memory object || or create new empty object {} joined[key] = msg.payload; //store the payload in the joined o…

This is very helpfull.I have just 1 question.In my project i have 3 Datapoints which is an object containing some data.When I use ur method i get 3 msgs in debugger.How do i make it to return only 1 msg which is an object containing my joined nodes.

use Object.keys(joined).length if it == 3 then return msg otherwise return null;

And how could i put count like its in join node?

I have 1 more question.I made this custom function node that works as 2 combined.But now my boss wants me to make a custom node from scratch that will work like for example join node. U click what u want to do with it and it does it without writing any code.Hope u understand what i mean.

Is that even possible for someone whose been coding frontend dev for 5 months.

Join Node As Function Node

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ivexy24 16 March 2021 11:33 16

I am working on some scheme that will monitor the work of some pumps in some station.On scheme i have lots of nodes but there is 1 "node" that is combination of 3 nodes and whose output depends on given inputs.(IF statements).My boss want me to make a node that will do exactly that. So i must combine Join node and Function node in 1 node for it to work.Its so unclear to me idk

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Join Node As Function Node

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