Lovelace Card and Jinja

Configuration Frontend
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1

Hi community,

I’m trying to configure a very simple “entities card” able to dynamically show the list of connected devices in my LAN.

I’m using the nmap device tracker.
When I exploit the developer tool for Jinja template elaboration, I’m able to obtain the list of entities id thanks to the following lines of code:

type: entities
title: MyConnectedDevices
entities: {{ states.device_tracker | selectattr('attributes.scanner', 'eq', 'NmapDeviceScanner') | map(attribute="entity_id") | list }}

this is the output:

type: entities
title: MyConnectedDevices
entities: ['device_tracker.XX_XX_XX_XX_XX_01', 'device_tracker.XX_XX_XX_XX_XX_02'', 'device_tracker.XX_XX_XX_XX_XX_03']

When I try this stuff into the Lovelace card configuration I receive this error: " missed comma between flow collection entries at line 3, column 96: … nner’, ‘eq’, ‘NmapDeviceScanner’) | map(attribute=“entity_id”) | … ^ "

Could you please tell me if it is right to insert Jinja templates into lovelace card configurations? If yes, where is the error?

Thank you very much for the support!

2

Lovelace does not support templating.

There are two custom cards that add this functionality. One jinja, one JavaScript. Go with the javascript version. It has less of a performance impact.

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