response variable in data_generator?

[jm-cook]

Checklist

• [ x] I am running the latest version of the card
• [ x] I checked if there isn't another feature request opened with the same request
• [ x] I checked that the feature is not already available in the dev branch

Is your feature request related to a problem? Please describe.
I am looking for a way to avoid writing a (large) dataset in to an entity in order to display it in apexcharts-card

An example is with the weather platform. In order to retrieve a future timeseries weather forecast you should use a template to fetch the data and then write it in to a template sensor: https://www.home-assistant.io/integrations/weather/#examples

The "problem" with this is that the sensor gets written to the recorder, taking up space that isn't needed. In my case I am retrieving a tide forecast, and that is a larger dataset than your average weather forecast and results in an error in the log files:

Logger: homeassistant.components.recorder.db_schema
Source: components/recorder/db_schema.py:624
integration: Recorder (documentation, issues)
First occurred: 10 December 2024 at 15:44:20 (100 occurrences)
Last logged: 08:00:00

State attributes for sensor.xxxx_tide_response exceed maximum size of 16384 bytes. This can cause database performance issues; Attributes will not be stored

Describe the solution you'd like

I know that I can probably prevent this entity being written by editing the recorder options, but I thought it would be better if the data_generator could update as a direct result of the service call. apexcharts-card already supports actions through the tap-action options etc, but then you have to click on something to make it work. I wondered if it were possible to agg more general actoin support to the card.

There are a couple of issues that I can imagine will make this a challenge (and that I have considered)

• HA variables are not global :-( otherwise we could just make a variable outside - job done.
• You would need to somehow trigger the update in the apex card