Nickel json for custom types example

example.rs

#[macro_use] extern crate nickel;
extern crate rustc_serialize;

use nickel::{Nickel, MediaType};
use rustc_serialize::json;

#[derive(RustcEncodable)]
struct Fruit<'a> {
    name: &'a str
}

fn main(){
    let mut server = Nickel::new();

    server.utilize(router! {
        get "/:title" => |_req, mut res| {
            let _title = _req.param("title").unwrap();
            let fruit1 = Fruit { name: "dekopon orange "};
            let fruit2 = Fruit { name: "fuji apple"};
            let fruit3 = Fruit { name: "palmer mango"};
            let fruit4 = Fruit { name: "italy grapes"};

            let basket = vec!(fruit1, fruit2, fruit3, fruit4);

            // If you want to use to_json, you'll need to implement `rustc_serialize::json::ToJson`
            // alternatively, you can just derive `RustcEncodable` and use `json::encode(..)` as below
            // res.set(MediaType::Json);
            // json::encode(&basket).unwrap()

            // if you want to do something a bit more complicated, you can use a viewmodel
            #[derive(RustcEncodable)]
            struct ViewModel<'a> {
                title: &'a str,
                basket: &'a [Fruit<'a>]
            }

            let viewmodel = ViewModel {
                title: _title,
                basket: &basket
            };

            res.set(MediaType::Json);
            json::encode(&viewmodel).unwrap()
        }
    });

    server.listen("127.0.0.1:6767");
}