use barrel::backend::Sqlite; use barrel::{types, types::Type, Migration}; fn primary_uuid() -> Type { types::text().unique(true).primary(true).nullable(false) } pub fn migration() -> String { let mut m = Migration::new(); // Keep track of contextual user state. m.create_table("user_state", move |t| { t.add_column("user_id", primary_uuid()); t.add_column("active_room", types::text().nullable(true)); }); m.make::() }