Any reference to implement Responder for Vec

[sagarnayak]

My user.rs

use std::io::Cursor;

use rocket::http::ContentType;
use rocket::request::Request;
use rocket::response::{self, Responder, Response};
use serde::{Deserialize, Serialize};

#[derive(Serialize, Deserialize, Debug)]
pub struct User {
	pub id: i64,
	pub name: String,
	pub email: String,
}

pub const TABLE_NAME_USER: &str = "users";

impl<'r> Responder<'r, 'static> for User {
	fn respond_to(self, _: &'r Request<'_>) -> response::Result<'static> {
		let json_string = rocket::serde::json::serde_json::to_string(&self).unwrap();
		Response::build()
			.sized_body(json_string.len(), Cursor::new(json_string))
			.header(ContentType::JSON)
			.ok()
	}
}

rocket endpoint -

#[get("/getBlankArray")]
pub fn get_blank_array() -> status::Custom<content::Json<Vec<User>>> {
	status::Custom(Status::Ok, content::Json(vec![]))
}

I want to return a vec of users.

Do I need to impl Responder for vec ? or i am on working path?

[SergioBenitez]

You never need to use serde_JSON directly. All of the docs guide you to the right path: return Json<Vec<T>>, where Json is rocket::serde::json::Json.

[sagarnayak]

This is what I changed -

#[get("/getBlankArray")]
pub fn get_blank_array() -> status::Custom<rocket::serde::json::Json<Vec<User>>> {
	status::Custom(Status::Ok, Json(vec![User { id: 123, name: "test user".to_string(), email: "[email protected]".to_string() }]))
}

I got confused here - Rocket Wrapping.
Using rocket::serde::json::Json fixed the problem.
thanks @SergioBenitez

[SergioBenitez]

You don't need Custom.

[sagarnayak]

I don't get you. I want to send a custom response code with my response. should i just remove the Custom. and write -> status<rocket::serde::json::Json<Vec<User>>> ?