Template action response_variable undefined

Configuration
1

Hi experts,

I really spend a lot of time with this. I want to use the temperature of tomorrow in an automation. I created the trigger and template sensor. Everything seems correct but I always get:

The action works correctly:

image
image1286×1428 102 KB

If I use the template editor. The parsing of the value looks also good:

image
image2294×448 50 KB

My template config

- trigger:
    - trigger: time_pattern
      minutes: "/5"
    - trigger: homeassistant
      event: start
  action:
    - action: weather.get_forecasts
      data:
        type: daily
      target:
        entity_id: weather.sandfeld13
      response_variable: daily_forecast
- sensor:
    - name: Temperature forecast next day
      unique_id: temperature_forecast_next_day
      state: >
        {{daily_forecast['weather.sandfeld13'].forcast[1].templow}}

The action should at least be triggered on HA start but I always get:

TemplateError('UndefinedError: 'daily_forecast' is undefined') while processing template 'Template<template=({{daily_forecast['weather.sandfeld13'].forcast[1].templow}}) renders=4>' for attribute '_attr_native_value' in entity 'sensor.temperature_forecast_next_day'

Logger: homeassistant.helpers.event
Source: helpers/template.py:633
First occurred: 15:00:17 (1 occurrences)
Last logged: 15:00:17

Error while processing template: Template<template=({{daily_forecast['weather.sandfeld13'].forcast[1].templow}}) renders=2>
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 631, in async_render
    render_result = _render_with_context(self.template, compiled, **kwargs)
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 2733, in _render_with_context
    return template.render(**kwargs)
           ~~~~~~~~~~~~~~~^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/jinja2/environment.py", line 1304, in render
    self.environment.handle_exception()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/site-packages/jinja2/environment.py", line 939, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "<template>", line 1, in top-level template code
  File "/usr/local/lib/python3.13/site-packages/jinja2/sandbox.py", line 304, in getitem
    return obj[argument]
           ~~~^^^^^^^^^^
jinja2.exceptions.UndefinedError: 'daily_forecast' is undefined

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 748, in async_render_to_info
    render_info._result = self.async_render(  # noqa: SLF001
                          ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
        variables, strict=strict, log_fn=log_fn, **kwargs
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 633, in async_render
    raise TemplateError(err) from err
homeassistant.exceptions.TemplateError: UndefinedError: 'daily_forecast' is undefined

Any idea? Im using HA version 2024.12.3

Thanks in advance!

Kind regards,

Marco

2

Replace the hyphen before sensor: with a space. Your current version is defining a separate sensor to the trigger and action.

You also have a typo in forcast.

3

Thank you very much. Works really well :partying_face:

1 Like
4

Getting a daily forecast every 5 minutes is a bit more frequent than necessary, too… :slightly_smiling_face:

5

in all likelihood, the 5 minute interval will just return cached values. It depends on the integration.

1 Like
6

Sure, that was just for debugging. Thanks again.