How to extract a substring from a payload and feed it into a input_text in home assistant?

[marcor78]

Hello,
it's driving me nuts and surely there's a simple answer that I just can't see right now...
I have a payload like this
" 90+1' Gol! 0 - [1] Canotto L."
and I want to extract the result (which in this case is 0 - 1) and feed it into an input_text in home assistant, by Call Service Node.
Is there a simple way to do it? I guess with some regex and change node, but it's way far from my skills...
any help will be appreciated!

[Steve-Mcl]

Regex is probably the way to go.

If you can provide a sample set of strings in all their varying formats, we will likely be able to generate a single regex that works for every combination.

Please also describe each part of a string and whether any parts are optional etc

[E1cid]

Not a HA user, but i do know in HA nodes you can use JSONata J:
so you could use something similar to

(
$parts := $split($$.payload, " ");
$substringBefore($substringAfter($parts[3], "["), "]") &
"-" &
$substringBefore($substringAfter($parts[5], "["), "]")
)

directly in the HA node, no need for a change node.

Example in a change node as i do not have HA installed

[{"id":"bde50f1e49b8d03c","type":"inject","z":"b9860b4b9de8c8da","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":":soccer: 90+1' Gol! 0 - [1] Canotto L.","payloadType":"str","x":270,"y":120,"wires":[["3f8ffb44d2555609"]]},{"id":"3f8ffb44d2555609","type":"change","z":"b9860b4b9de8c8da","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"(\t$parts := $split($$.payload, \" \");\t$substringBefore($substringAfter($parts[3], \"[\"), \"]\") &\t \"-\" &\t  $substringBefore($substringAfter($parts[5], \"[\"), \"]\")\t)","tot":"jsonata"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":120,"wires":[["206ef230aa8a551e"]]},{"id":"206ef230aa8a551e","type":"debug","z":"b9860b4b9de8c8da","name":"debug 338","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"false","statusVal":"","statusType":"auto","x":690,"y":120,"wires":[]}]

[marcor78]

@E1cid

(
$parts := $split($.payload, " ");
$substringBefore($substringAfter($parts[3], "["), "]") &
"-" &
$substringBefore($substringAfter($parts[5], "["), "]")
)

Just perfect! Works like a charm! I ended up setting a change node and then put the payload into the ha node. You saved my day!