Error in Swagger UI when the path Parameter is not String

[darixsamani]

Describe the bug
In this issue, I want to report an issue when I execute the request in Swagger UI when the path parameter is not a string

To Reproduce
Here is a small part of my code to reproduce the error:

routes/posts.rs file

use salvo::prelude::*;
use salvo_oapi::{endpoint, extract::PathParam};


#[endpoint(tags("Posts"), summary = "get all posts", description = "the objective of this endpoint is to retreive all posts")]
fn get_all_posts(res: &mut Response){
    res.render("get all posts")
}

#[endpoint(tags("Posts"), summary = "create posts", description = " the objective of this endpoint is to create a post")]
fn create_posts(res: &mut Response){
    res.render("create posts")
}

#[endpoint(tags("Posts"), summary = "update posts", description = "update a specific post by id")]
fn update_posts(id: PathParam<i32>, res: &mut Response, _req: &mut Request){
    println!("update posts");
    res.render(format!("update posts with id {}", id.into_inner()));
}

#[endpoint(tags("Posts"), summary = "delete posts", description = "delete a specific post by id")]
fn  delete_posts(id: PathParam<i32>, res: &mut Response, _req: &mut Request){
    println!("delete posts");
    res.render(format!("delete posts with id {}", id.into_inner()));
}

#[endpoint(tags("Posts"), summary = "get posts information", description = "get a specific post by id")]
fn get_posts_information(id: PathParam<i32>, res: &mut Response, _req: &mut Request){
    println!("get information posts");
    res.render(format!("get posts with id {}", id.into_inner()));
}

pub fn get_posts_router() -> Router {

    let posts_router = Router::with_path("/posts")
        .get(get_all_posts)
        .post(create_posts)
        .push(
            Router::with_path("{id:num}")
            .get(get_posts_information)
            .put(update_posts)
            .delete(delete_posts)
        );
    posts_router
}

routes/users.rs file

use salvo::prelude::*;
use salvo_oapi::endpoint;


#[endpoint(tags("Users"), summary = "get all users", description = "the objective of this endpoint is to retreive all the users in database")]
fn get_all_users(res: &mut Response){
    res.render("get all users")
}

#[endpoint(tags("Users"), summary = "create users", description = "the objective of this endpoint is to create the new users")]
fn create_users(res: &mut Response){
    res.render("create users")

}



pub fn get_users_router() -> Router {
    let users_router = Router::with_path("users")
        .get(get_all_users)
        .post(create_users);
    users_router    
}

main.rs file

use salvo::prelude::*;
use salvo_oapi::OpenApi;
use salvo_oapi::extract::QueryParam;
use salvo_oapi::endpoint;
use crate::routes::users::get_users_router;
use crate::routes::posts::get_posts_router;


pub mod database;
pub mod models;
pub mod schemas;
pub mod routes;



#[endpoint(tags("main"), summary = "hello", description = "description  of the  main endpoint")]
async fn hello(name: QueryParam<String, false>, res: &mut Response){
    println!("{:?}", name);
    res.render(format!("Hello, {}!", name.clone().unwrap()))
}

#[endpoint(tags("Hello"), summary="Just Print hello world", description= "description of the handle/endpoint to print hello world")]
async fn hello_world() -> Result<&'static str, salvo::Error>{
    Ok("Hello world")
}

#[tokio::main]
async fn main() {
    

    tracing_subscriber::fmt().init();

    let router = Router::new().get(hello_world)
        .push(Router::with_path("hello").get(hello))
        .push(get_users_router())
        .push(get_posts_router());

    let doc = OpenApi::new("Salvo Postgresql Boilerplate", "0.0.1").merge_router(&router);

    let router = router
        .unshift(doc.into_router("/api-doc/openapi.json"))
        .unshift(SwaggerUi::new("/api-doc/openapi.json").into_router("/docs"));

    let acceptor = TcpListener::new("0.0.0.0:5800").bind().await;
    
    Server::new(acceptor).serve(router).await;
}

When I request with this path: http://0.0.0.0:5800/posts/{id: num} in the post in Swagger for example http://0.0.0.0:5800/posts/12 in post i got this error

404 Undocumented Error: Not Found

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width">
    <title>404: Not Found</title>
    <style>
    :root {
        --bg-color: #fff;
        --text-color: #222;
    }
    body {
        background: var(--bg-color);
        color: var(--text-color);
        text-align: center;
    }
    pre { text-align: left; padding: 0 1rem; }
    footer{text-align:center;}
    @media (prefers-color-scheme: dark) {
        :root {
            --bg-color: #222;
            --text-color: #ddd;
        }
        a:link { color: red; }
        a:visited { color: #a8aeff; }
        a:hover {color: #a8aeff;}
        a:active {color: #a8aeff;}
    }
    </style>
</head>
<body>
    <div><h1>404: Not Found</h1><h3>The requested resource could not be found.</h3><hr><footer><a href="https://salvo.rs" target="_blank">salvo</a></footer></div>
</body>
</html>

Expected behavior
The code works well outside the Swagger UI, for example, in Postman, but I got the error in the Swagger UI when the path parameter is not a String

Screenshots
Here is the image of the error in Swagger UI

Desktop (please complete the following information):

• OS: [linus(debians)]
• Browser [chrome]
• Version [12]

Additional context
I repeat again, all endpoints work well outside the Swagger UI The issue is that in Swagger UI, I got the error when the path parameter is not a string, for example, when the path parameter is num or with a regex /d+