Finding out area (EDIT: area_name) of an entity that is part of a device

pet · January 26, 2022, 10:30am

I’m trying to create a Node-RED chain as follows:

Any of my PIR sensors triggers
Check if I’m home
Update a helper Internal_location_from to a (previous) value from Internal_location_to
Update a helper Internal_location_to to the PIR location

I could and can create separate flows for each PIR but I’m trying to figure out the last step, how could I

Extract PIR sensor value for Area from the parent PIR device (that has Area configured)
Create custom message that would transfer the Area information from PIR trigger to the last step so that I could use the Area value for the Internal_location_to helper

Recte · January 26, 2022, 11:11am

Maybe you should move your question to the Node-Red category

pet · January 26, 2022, 12:22pm

Very true, sorry

Mikefila · January 27, 2022, 12:04am

You can get the area using the render template node.

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pet · February 4, 2022, 2:06pm

Now that I played with the example above from @Mikefila I understood that I in fact don’t want the area_id but the area friendly name. The syntax for change node for that seems to be

{“area_name”:“{{area_name(‘xxxxx’)}}”}

pet · February 9, 2022, 11:36am

This is my final flow

PIR activation
Check if I’m home
Lower:
Set helper Internal_location_from value to previous location based on Internal_location_to helper (area_name value)
Clear payload to empty string (in order for the join node to work later)
Upper:
Fetch PIR area_name value via a template to msg.payload
Wait via join node for step 3. to finish, combine payloads (empty string from step 3., area_name from step 5.
set helper Internal_location_to based on msg.payload (area_name value)


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