Extract rgb value from payload

[Loasca]

Good evening, I would like to extract the RGB values from the message below, and use them to change rgb in css

data: object
entity_id: "light.bec"
state: "on"
attributes: object
supported_color_modes: array[2]
color_mode: "hs"
brightness: 10
hs_color: array[2]
rgb_color: array[3]
0: 255
1: 255
2: 36
xy_color: array[2]
friendly_name: "Bec "
supported_features: 0

[marcus-j-davies]

Providing this is the object in payload

In a function node.

const RGBValues = msg.payload.rgb_color
const color = `rgb(${RGBValues[0]},${RGBValues[1]},${RGBValues[2]})`
return {payload:color}

returns "rgb(255,255,36)"

various ways - but this uses the function node

[Loasca]

Thanks this is my flow

 [{"id":"03a1773829ea545a","type":"api-current-state","z":"0b3973a44a088610","name":"","server":"9976ac94.2c258","version":3,"outputs":1,"halt_if":"","halt_if_type":"str","halt_if_compare":"is","entity_id":"light.bec_camera_de_zi","state_type":"str","blockInputOverrides":false,"outputProperties":[{"property":"payload","propertyType":"msg","value":"","valueType":"entityState"},{"property":"data","propertyType":"msg","value":"","valueType":"entity"}],"for":"0","forType":"num","forUnits":"minutes","override_topic":false,"state_location":"payload","override_payload":"msg","entity_location":"data","override_data":"msg","x":370,"y":180,"wires":[["c13cdba89f43e854"]]},{"id":"9976ac94.2c258","type":"server","name":"Home Assistant","version":5,"addon":true,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open","connectionDelay":true,"cacheJson":true,"heartbeat":false,"heartbeatInterval":30,"areaSelector":"friendlyName","deviceSelector":"friendlyName","entitySelector":"friendlyName","statusSeparator":"at: ","statusYear":"hidden","statusMonth":"short","statusDay":"numeric","statusHourCycle":"h23","statusTimeFormat":"h:m","enableGlobalContextStore":true}]

this is the error TypeError: Cannot read properties of undefined (reading '0')

[marcus-j-davies]

Ok,

Can you paste the exact payload you have provided above using the debug panel to copy it?
copy the whole payload object

[jbudd]

@Loasca

data: object
entity_id: "light.bec"
state: "on"
attributes: object
supported_color_modes: array[2]
color_mode: "hs"
brightness: 10
hs_color: array[2]
rgb_color: array[3]

Looks like the values are not in msg.payload.rgb_color but msg.payload.data,rgb_color or maybe msg.data.rgb_color. It would have been better to show us the whole message!

And your posted "flow" seems to be just two nodes, "api-current-state" and "server", neither of which are core Node-red nodes.

[Loasca]

payload

{"_msgid":"e47242b7bfea685a","payload":"on","topic":"","data":{"entity_id":"light.bec_camera_de_zi","state":"on","attributes":{"supported_color_modes":["brightness","hs"],"color_mode":"hs","brightness":10,"hs_color":[60,85.7],"rgb_color":[255,255,36],"xy_color":[0.441,0.511],"friendly_name":"Bec camera de zi","supported_features":0},"last_changed":"2022-12-23T13:33:40.943Z","last_updated":"2022-12-23T13:33:40.943Z","context":{"id":"01GMZK0YZ6NJ87V7F14VE7DXW9","parent_id":null,"user_id":"1b5064a06dfd4f7ea3007839d7e15372"},"timeSinceChangedMs":5522}}

{"_msgid":"e47242b7bfea685a","payload":"on","topic":"","data":{"entity_id":"light.bec_camera_de_zi","state":"on","attributes":{"supported_color_modes":["brightness","hs"],"color_mode":"hs","brightness":10,"hs_color":[60,85.7],"rgb_color":[255,255,36],"xy_color":[0.441,0.511],"friendly_name":"Bec camera de zi","supported_features":0},"last_changed":"2022-12-23T13:33:40.943Z","last_updated":"2022-12-23T13:33:40.943Z","context":{"id":"01GMZK0YZ6NJ87V7F14VE7DXW9","parent_id":null,"user_id":"1b5064a06dfd4f7ea3007839d7e15372"},"timeSinceChangedMs":5522}}

[marcus-j-davies]

So yes! thats quite different.

const RGBValues = msg.data.attributes.rgb_color
const color = `rgb(${RGBValues[0]},${RGBValues[1]},${RGBValues[2]})`
return {payload:color}

[Loasca]

My mistake, really now I got what I wanted, thank you, happy holidays.