Value template error "Error during template condition: UndefinedError: 'mappingproxy object' has no attribute 'temperature'"

Configuration
1

I’m trying to set up a notification based on rising temperature, but keep getting this error:

Error during template condition: UndefinedError: ‘mappingproxy object’ has no attribute ‘temperature’

My automation looks like this:

- alias: 'Notify when sauna is up to temperature'
  trigger:
    platform: template
    value_template: "{% if states.sensor.sauna_temperature.attributes.Temperature > 24 %}true{% endif %}"
  action:
    service: notify.prowl
    data_template:
      title: "Spa Sauna"
      message: "Up to temperature"

The console output from my Sonoff gives this:

21:28:37 MQT: tele/sauna/SENSOR = {“Time”:“2018-10-05T21:28:37”,“DS18B20”:{“Temperature”:25.6},“TempUnit”:“C”}

Any help would be much appreciated.

2

Try using a lower-case ‘t’ in temperature. HA is case sensitive and all entity ids and attributes are lower case.

Also the attribute is a string. Cast it as a floating point number or integer.

- alias: 'Notify when sauna is up to temperature'
  trigger:
    platform: template
    value_template: "{% if states.sensor.sauna_temperature.attributes.temperature | float > 24 %}true{% endif %}"
  action:
    service: notify.prowl
    data_template:
      title: "Spa Sauna"
      message: "Up to temperature"
3

Or you might just be able to use this:

- alias: 'Notify when sauna is up to temperature'
  trigger:
    platform: numeric_state
    entity_id: sensor.sauna_temperature
    above: 24
  action:
    service: notify.prowl
    data_template:
      title: "Spa Sauna"
      message: "Up to temperature"

It depends how your sensor is set up.

1 Like
4

Thank you so much for taking the time to reply.

My sensor is set up thus:

#### Sauna temperature ###
- platform: mqtt
  name: "Sauna Temperature"
  state_topic: "tele/sauna/SENSOR"
  value_template: "{{ value_json['DS18B20'].Temperature }}"
  unit_of_measurement: "°C"

You said “It depends how your sensor is set up.”

Does this make a difference in the examples you gave?

How is a sensor defined as float, integer or string?

35 years ago I used to dabble with C and am just getting back to coding now, so help is invaluable!

5

In that case the second option (without the template) that I posted should work.

State values are always strings. To cast them as another type use the pipe symbol.

e.g.

{{ states.sensor.sauna_temperature.state | float }}

{{ states.sensor.sauna_temperature.state | int }}
6

Brilliant. That worked.

Thank you so much for your help.

I appreciate it.