Thanks @VDRainer, but… still have problems.
First a maybe stupid question: What is the “dev-info panel for details”?
Because that’s the message I get with the entry in my sensors.yaml shown below.
The log shows
Invalid config for [sensor.template]: invalid slug weather.in_kolle_ze_hus (try weather_in_kolle_ze_hus) for dictionary value @ data['sensors']. Got OrderedDict([('weather.in_kolle_ze_hus', OrderedDict([('value_template', "{{ state_attr('weather.in_kolle_ze_hus', 'temperature') }")]))]). (See ?, line ?). Please check the docs at https://home-assistant.io/components/sensor.template/
sensors.yaml:
# Temperatur-Attribut als Extra-Wert
- platform: template
sensors:
weather.in_kolle_ze_hus:
friendly_name: "HA Temperatur Vorhersage"
unit_of_measurement: '°C'
value_template: "{{ state_attr('weather.in_kolle_ze_hus', 'temperature') }}"
When I put weather_in_kolle_ze_hus instead, the syntax is okay, but I don’t get the values…