number: add a restore_mode (like in a switch)

[TCB13]

Component name

Number

Link to component documentation on our website

https://esphome.io/components/number/

Describe the enhancement

On a switch component there's a restore_mode that can be set to something like RESTORE_DEFAULT_ON.

On a number however there's only a mostly useless restore_value: true that never works (same board). Can we have the same logic used for the restore_mode on the switch ported to the number? If it works for a bool should work for a float as well.

Thank you.

Use cases

Be able to restore number component values after restart. Very useful if you've something the user can set like a time to do some action and you want it to persist across reboots.

Anything else?

No response

[github-actions[bot]]

🏷️ I've automatically added the component: number label to help categorize this feature request.

[ssieb]

restore_value works for number:, which is a float, not an int. It's weird that you're asking for an option that already exists. If it didn't work, then that's a bug, not a feature request, but it does work.

[TCB13]

I never saw restore_value: true actually working, besides that restore_mode has different options that make it more flexible.

[ssieb]

You need to provide more details about what's not working. Either create an issue or come ask on discord. restore_mode doesn't make sense for number.

[nagyrobi]

Existing option works for number. I use it in several cases.

Actual functionality of course depends on platform.