As a new user of HA I hit an issue with the waste collection integration (or at least the sensor attributes related to that).
I have defined a sensor that received the schedule from the waste collection integration:
State attributes of `sensor.upcoming`
types:
- GFT
- OPK
- PMD
upcoming:
- date: "2025-06-20"
icon: null
picture: /local/waste/plastic.png
type: PMD
- date: "2025-06-27"
icon: mdi:leaf
picture: /local/waste/organic_waste.png
type: GFT
- date: "2025-06-30"
icon: null
picture: /local/waste/paper.png
type: OPK
- date: "2025-07-04"
icon: null
picture: /local/waste/plastic.png
type: PMD
...
In a Mushroom Template card the following Jinja2 expression is included:
{% set date = as_datetime(state_attr('sensor.upcoming','upcoming')[0].date) %}
Over {{ (date.date() - now.date()).days }} dagen
to show info about the next wast collection.
However the logfile shows the following error:
ERROR (MainThread) [homeassistant.helpers.event] Error while processing template: Template<template=({% set date = as_datetime(state_attr('sensor.upcoming','upcoming')[0].date) %}
Over {{ (date.date() - now.date()).days }} dagen) renders=70>
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 644, in async_render
render_result = _render_with_context(self.template, compiled, **kwargs)
File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 2969, in _render_with_context
return template.render(**kwargs)
~~~~~~~~~~~~~~~^^^^^^^^^^
File "/usr/local/lib/python3.13/site-packages/jinja2/environment.py", line 1295, in render
self.environment.handle_exception()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.13/site-packages/jinja2/environment.py", line 942, in handle_exception
raise rewrite_traceback_stack(source=source)
File "<template>", line 2, in top-level template code
File "/usr/local/lib/python3.13/site-packages/jinja2/sandbox.py", line 399, in call
if not __self.is_safe_callable(__obj):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^
File "/usr/src/homeassistant/homeassistant/helpers/template.py", line 3446, in is_safe_callable
) or super().is_safe_callable(obj)
~~~~~~~~~~~~~~~~~~~~~~~~^^^^^
File "/usr/local/lib/python3.13/site-packages/jinja2/sandbox.py", line 265, in is_safe_callable
getattr(obj, "unsafe_callable", False) or getattr(obj, "alters_data", False)
~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
jinja2.exceptions.UndefinedError: 'function object' has no attribute 'date'
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 761, 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 646, in async_render
raise TemplateError(err) from err
homeassistant.exceptions.TemplateError: UndefinedError: 'function object' has no attribute 'date'
What am I missing here?
