Erreur 400 bad Request Actix - rust

Question

I'm a beginner with rust and i have some troube testing my api.
I try to post some data via curl but keep having error 400 bad Request.
curl -X POST -H "Content-Type: application/json" -d '{"id": "20", "first_name": "foo1", "last_name": "bar1", "address": "Bourghelles", "mail": "foo1#bar.com", "phone_number": "0620399062"}' http://127.0.0.1:8080/clients -v
pub async fn create_clients(pool: web::Data<SqlPool>, req: web::Json<Client>) -> Result<HttpResponse, Error> {
Ok(web::block(move || clients::create(pool, req))
.await
.map(|client| HttpResponse::Ok().json(client))
.map_err(|_| HttpResponse::InternalServerError())?)
}
#[derive(Queryable, Insertable, Serialize, Deserialize)]
pub struct Client {
pub id: i32,
pub first_name: String,
pub last_name: String,
pub address: String,
pub mail: String,
pub phone_number : String,
}
#[derive(Insertable, Serialize, Deserialize)]
#[table_name = "clients"]
pub struct NewClient<'a>{
pub id: i32,
pub first_name : &'a str,
pub last_name : &'a str,
pub address : &'a str,
pub mail : &'a str,
pub phone_number : &'a str,
}
pub fn create(pool: web::Data<SqlPool>, req: web::Json<Client>) -> Result<Client, diesel::result::Error>{
let new_client = NewClient {
id: req.id,
first_name: &req.first_name,
last_name: &req.last_name,
address: &req.address,
mail: &req.mail,
phone_number: &req.phone_number,
};
format!{"Hello world from create"};
let conn = pool.get().unwrap();
use crate::schema::clients::dsl::*;
let res = diesel::insert_into(clients).values(&new_client).execute(&conn)?;
return show(pool, 1);
}
async fn main() -> std::io::Result<()> {
dotenv().ok();
let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
let manager = ConnectionManager::<MysqlConnection>::new(database_url);
let pool = r2d2::Pool::builder()
.build(manager)
.expect("Failed to create pool.");
HttpServer::new(move || {
App::new()
.data(pool.clone())
.route("/clients", web::post().to(api::client::create_clients))
// .service(api::client::hello_world)
// .service(api::client::all_clients)
// .service(api::client::find_clients)
// .service(api::client::update_clients)
// .service(api::client::delete_clients)
// .service(api::house::all_houses)
// .service(api::house::find_houses)
// .service(api::house::create_houses)
// .service(api::house::update_houses)
// .service(api::house::delete_houses)
})
.bind(("127.0.0.1", 8080))?
.run()
.await
}

Answer 1

I suspect that this is because you input "id": "20" and not "id": 20
The following test passes:
use serde::Deserialize;
#[derive(Deserialize)]
pub struct Client {
pub id: i32,
pub first_name: String,
pub last_name: String,
pub address: String,
pub mail: String,
pub phone_number: String,
}
#[test]
fn deserialize_test() {
use serde_json::json;
let client_fail_json = json!(
{
"id": "20",
"first_name": "foo1",
"last_name": "bar1",
"address": "Bourghelles",
"mail": "foo1#bar.com",
"phone_number": "0620399062"
}
);
let client_fail: Result<Client, _> = serde_json::from_value(client_fail_json);
assert!(client_fail.is_err());
let client_json = json!(
{
"id": 20,
"first_name": "foo1",
"last_name": "bar1",
"address": "Bourghelles",
"mail": "foo1#bar.com",
"phone_number": "0620399062"
}
);
let client: Result<Client, _> = serde_json::from_value(client_json);
client.unwrap();
}