Mqtt Multiple Inputs to one Json Object or Array

[Starfoxfs]

Hi,

i have a OpenDTU Mqtt Input with Multiple Numbers in the msg.payload but no exact Identity. The Identity of each payload is in the Topic.

I want to add all togehter in a function and add the Identity to it like Voltage, Current etc.

How to do this ?

[jbudd]

The normal Node-red way would be to use a Join node in manual mode, using msg.topic to distinguish each input.

For example, if you have messages with msg.topic == "current" and "voltage", you can set the join node to join after 2 message parts.

@Starfoxfs

I want to add all together in a function and add the Identity to it like Voltage, Current etc.

Why do you want to do it in a function?
Are you just reaching for a function node because you think it's needed, or is there some other reason?

[Colin]

See also this article in the cookbook for an example of how to join messages into one object.

[Starfoxfs]

Thanks thats it