Allow accessing state's internal pool

[arcstur]

Sometimes I need the pool, to construct other stuff in the application. It would be useful to access the state's internal pool, so that I don't need to have two of the same pool in my app's state. What do you think?

What I mean is that I don't want to have

#[derive(Clone, FromRef)]
pub struct AppState {
    pub pool: PgPool,
    pub tx_state: axum_sqlx_tx::State<sqlx::Postgres>,
}

And have only the tx_state, since it already holds a pool.

[connec]

It would be possible to impl FromRef<axum_sqlx_tx::State<DB>> for sqlx::Pool<DB>, meaning a State<PgPool> could be extracted from an axum_sqlx_tx::State<sqlx::Postgres>.

Would that work for your use-case?

If you already needed a separate state struct, you'd have to proxy the FromRef implementation manually.

[arcstur]

Yeah, that would be awesome! Then, in my state struct, I would do fn pool(&self) { PgPool::from_ref(&self.tx_state) }

[connec]

Fixed by #42.