Cards often have a ‘Show if empty’ option. What I want is an automation which sends a notification if a card changes from not shown (card is emty) to shown.
I have for example a battery empty card which only shows the battery entities when the battery level is below 10%. On that occasion I want to get notified on my phone.
Is there a way to detect if a card is visible or not?
Just make a normal automation that triggers on the same entities that you will use to determine whether you’ll show your card.
Unfortunately that’s not a good solution in this case. I’m using an auto-entities card and that card will pick the entities automatically. So if I add a battery powered device to my Home Assistant, the battery entity is automatically added to the card. I don’t want to add all entities by hand.
type: custom:auto-entities
card:
show_header_toggle: false
title: Battery low
type: entities
state_color: true
filter:
include:
- attributes:
device_class: battery
state: <=10
exclude:
- name: /[Ll]ow/
- name: /[Ss]tate/
- name: Lux*
sort:
methode: state
numeric: true
show_empty: false
Hi,
What @parautenbach says.
I have 2 automations for each battery > Charged of Discharged notify.
alias: Melding Rolgordijn 1 Batterij 20%
description: ""
trigger:
- type: battery_level
platform: device
device_id: 85515cbb8a40faaac9845a3ce1fbf4c3
entity_id: sensor.rolgordijn1_battery
domain: sensor
below: 20
condition: []
action:
- service: notify.mobile_app_leroy
data:
message: Rolgordijn 1 onder de 20%
title: 🔋 Batterij
data:
ttl: 0
priority: high
mode: single
Maybe you can template…but I am not a specialist in that stuff…
I use this:
Yeah thanks, I’ve seen and used that solution, but I have more cards which are hidden if empty. The battery card was just an example.
There should however be a solution for card visibility detection.
No, it’s backwards. This is not the way to build this. You don’t control backend things in that way from a frontend. Nobody that understands software engineering would do this.
It’s a bit involved, but here’s my automation for this kind of thing:
- alias: "Check For Low Batteries"
initial_state: true
variables:
level: 5
# https://community.home-assistant.io/t/variable-in-automation-not-working-as-expected/431591/2
monitored_batteries: >-
{{
states.sensor
| selectattr('attributes.monitor', 'defined')
| selectattr('attributes.monitor', 'eq', True)
| rejectattr('state', 'in', ['unavailable', 'unknown', 'none'])
| selectattr('attributes.device_class', 'eq', 'battery')
| map(attribute='entity_id')
| list
}}
trigger:
platform: time
at: "09:00:00"
condition: >-
{{
expand(monitored_batteries)
| map(attribute='state')
| map('int')
| select('lt', level)
| list
| count
> 0
}}
action:
- service: notify.mobile_app_ceres
data:
title: "Batteries"
# https://community.home-assistant.io/t/recommended-ways-to-manage-devices-and-entities-names/243815/12
message: >
The following devices have less than {{ level }}% charge:
{%- for b in monitored_batteries %}
{%- if states(b) | int < level and not is_state(b, 'unavailable') %}
- {{ state_attr(b, 'friendly_name') | replace(' Battery', '') }}: {{ states(b) | int }}%
{%- endif -%}
{%- endfor %}
data:
group: "batteries"
url: homeassistant://navigate/lovelace/devices
All I have to do now is to add a special attribute to a device with a battery I want monitored by this, for example:
sensor.pieter_bedside_light_button_battery:
friendly_name: Pieter's Bedside Light Button Battery
monitor: True
It’s even easier if you want to monitor all batteries. In my case, I only want to monitor certain batteries. In other words, this:
{{
states.sensor
| selectattr('attributes.monitor', 'defined')
| selectattr('attributes.monitor', 'eq', True)
| rejectattr('state', 'in', ['unavailable', 'unknown', 'none'])
| selectattr('attributes.device_class', 'eq', 'battery')
| map(attribute='entity_id')
| list
}}
can then be simplified to this:
{{
states.sensor
| rejectattr('state', 'in', ['unavailable', 'unknown', 'none'])
| selectattr('attributes.device_class', 'eq', 'battery')
| map(attribute='entity_id')
| list
}}