Issue with state_attr and objects in template

Configuration
1

I’m a bit stumped, reading from other examples this should work:

{% for object in states.binary_sensor %}
{% set battery = state_attr(object , 'battery_level') %}
{{object.name}}:{{battery}}
{% endfor %}

however it gives this strange error in the log:

File "/srv/homeassistant/lib/python3.5/site-packages/homeassistant/helpers/template.py", line 284, in __getattribute__
    return getattr(object.__getattribute__(self, '_state'), name)
AttributeError: 'State' object has no attribute 'lower'

for reference, this works:

{% for object in states.binary_sensor %}
{{object}}
{% endfor %}

And gives output, including the asked battery level (shortend):

<template state binary_sensor.motion_sensor_158d0002b8586b=off; No motion since=1800, device_class=motion, battery_level=49.0, friendly_name=motion_trap @ 2019-02-02T09:09:19.440280+01:00> 
<template state binary_sensor.ring_front_door_ding=off; friendly_name=Front Door Ding, expires_at=2019-02-02T12:08:21.668320+01:00, firmware=Up to Date, device_class=occupancy, state=ringing, device_id=341513c2b0af, attribution=Data provided by Ring.com, timezone=Europe/Amsterdam @ 2019-01-31T11:41:46.618673+01:00>
2

Na, that won’t work. You’re iterating across state objects and passing the state object to the function. You need to pass the entity_id to the function.

{% for object in states.binary_sensor %}
{% set battery = state_attr(object.entity_id, 'battery_level') %}
{{object.name}}:{{battery}}
{% endfor %}

Yeah that works because the state object has a repr function. That repr function properly prints objects as strings for users. But you are seeing a representation of the entire object.

1 Like
3

Thanks, I wasn’t aware. Also some of the examples that I found on here were wrong also in that case.

4

where’d you find the examples? Many people don’t know what they are doing with templates, they just copy/paste. Best to always consult the examples on HA’s templating pages or ask here.

looks like they reworked the help page. All these examples look good.

5

examples in forum posts. The examples in the documentation are fine, but they don’t give examples like this.