I followed the quickstart guide. Now I'm trying to return some super simple JSON and the documentation is wrong and there's no way to submit a ticket without getting on IRC.
error[E0432]: unresolved import `rocket::serde::json`
--> src/main.rs:2:20
|
2 | use rocket::serde::json::Json;
| ^^^^ could not find `json` in `serde`
For more information about this error, try `rustc --explain E0432`.
error: could not compile `my-api` due to previous error
This is my code:
[package]
name = "my-api"
version = "0.1.0"
edition = "2021"
publish = false
[dependencies]
rocket = "0.5.0-rc.1"
serde = "1.0.130"
#[macro_use] extern crate rocket;
use rocket::serde::{Serialize, json::Json};
#[derive(Serialize)]
struct Location {
lat: String,
lng: String,
}
#[get("/?<lat>&<lng>")]
fn location(lat: &str, lng: &str) -> Json<Location> {
Json(Location {
lat: 111.1111.to_string(),
lng: 222.2222.to_string(),
})
}
#[launch]
fn rocket() -> _ {
rocket::build().mount("/", routes![location])
}
If you go here you'll see this is almost a direct copy/paste from the documentation. I don't know enough of Rust to troubleshoot dependency errors.
The json feature for rocket needs to be explicitly turned on in your Cargo.toml.
[package]
name = "my-api"
version = "0.1.0"
edition = "2018" // cut back for testing with nixpkgs-provided rust
publish = false
[dependencies]
serde = "1.0.130"
[dependencies.rocket]
version = "0.5.0-rc.1"
features = ["json"]
This is documented in a comment in the Rocket source which generates the document here.