2jun0

This commits support sidebar, but probably you can solve #1550 with a little change,

@Adamillo I will solve this error first and then consider it positively

I've made an [extension module](https://github.com/2jun0/async-sqlmodel) that adds an awaitable field for accessing relationship models using async. You can use it as shown below. What do you think about it? ```python...

@copdips Thanks for you reply. I found this bug and fixed it. And I think it would be good to add this function to sqlmodel. However, I'm not sure if...