Learn Rust Coding · Lesson

Extractors

Parse requests.

What is an extractor?

An extractor is a handler parameter that pulls a piece of the request out for you. Axum inspects the parameter types and fills them in.

Path captures dynamic URL segments. The type inside determines how the segment is parsed.

use axum::extract::Path;

async fn user(Path(id): Path<u32>) -> String {
    format!("user {}", id)
}