Parse an array within an object in node red

[scott mcclelland]

Hi 

i cannot find how to parse the rxInfo array within this object so i can access the parameters 

i normally collect the payload (Data:) using 

msg.payload = msg.payload.data.toString();

return msg;

I have been looking at toArray but can't manage to get working

02/10/2017, 23:19:57node: MQTT debugapplication/1/node/0101010101010102/rx : msg.payload : Object

object

applicationID: "1"

applicationName: "AndersonMoyPark-RHF1S001"

nodeName: "RHF1S001-Anderson-PoultryHouse1"

devEUI: "0101010101010102"

rxInfo: array[1]

0: object

mac: "b827ebfffe7afb93"

rssi: -121

loRaSNR: -10.2

name: "LoRaWAN-38"

latitude: 54.86658090934141

longitude: -6.167278289794922

altitude: 170

txInfo: object

frequency: 868100000

dataRate: object

modulation: "LORA"

bandwidth: 125

spreadFactor: 12

adr: true

codeRate: "4/5"

fCnt: 616

fPort: 8

data: "AQReqMIB//++"

thanks in advance for any light you can shed

[Nick O'Leary]

Assuming you're using Node-RED 0.17, when you hover over an element of the message in debug you will see some buttons appear to the right hand-side:

​

Clicking the first of them will copy the path to that element (excluding the intial 'msg'). For example, from the text you've pasted, I _think_ you'll find rxInfo is addressed as msg.payload.rxInfo.

In which case msg.payload.rxInfo[0] is the first element in that array - as you have expanded in the view.

Nick

--
http://nodered.org
 
Join us on Slack to continue the conversation: http://nodered.org/slack
---
You received this message because you are subscribed to the Google Groups "Node-RED" group.
To unsubscribe from this group and stop receiving emails from it, send an email to node-red+unsubscribe@googlegroups.com.
To post to this group, send email to node...@googlegroups.com.
Visit this group at https://groups.google.com/group/node-red.
To view this discussion on the web, visit https://groups.google.com/d/msgid/node-red/bf007959-656c-4140-888a-76abbac97b9b%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[scott mcclelland]

Perfect pulled out the object i wanted

thanks for your help

[Phil Taylor]

Me too!  Thanks Nick, great feature.