rescue

Error boundary middleware that turns unhandled crashes into 500 responses.

Functions

middleware

pub fn middleware(
  c: Conn(body),
  next: fn(Conn(body)) -> Response(ResponseData),
) -> Response(ResponseData)

Wraps next(c) in a try/catch. If the handler raises, panics, or hits a failed let assert, the error is logged via Erlang's logger and a 500 Internal Server Error HTML response is returned.

Place this as the outermost middleware in your top-level scope so it covers the entire request pipeline:

router.scope("/", [rescue.middleware, auth.load(secret)], fn(r) { ... })