Adding state to State

[Sagebati]

Hi,

Big user of minijinja, I'm in the need of using async functions in the add_function. I saw different examples, with impl Object. I find this solution difficult and I think most of it could be resolved if we added custom state a la axum. Environement::<MyCustomState>::with_state(env,state)

pub fn custom_filter(s: &State<MyCustomState>, _v: Value) -> Result<Value, Error> {
     s.state // We can access the my custom state        
}

Is this something that could be integrated or it's a no go ?

[mitsuhiko]

The big question with this is: what would be the lifetime of that? Today the state's lifetime is a bit complicated as for instance extending, including and macro invocations will crate their own state.

[Sagebati]

If by "that" you mean the type MyCustomState, the idea is that the custom state would be added to Environment, with for add_custom_state() so it lives as least as long as the Environment. For me the problem is that we have to add a type generic to many structs.