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Bug ReportVersionaxum-form-mre v0.1.0 PlatformDarwin DescriptionHey everyone, I'm kinda new to Axum and running into a issue trying to get nested form data working with the standard Basically, I have a form where I want to submit a list of items <form action="/" method="post">
<div>
<label>Name 1: <input type="text" name="name" value="Alice"></label>
</div>
<div>
<label>Name 2: <input type="text" name="name" value="Bob"></label>
</div>
<div>
<label>Name 3: <input type="text" name="name" value="Charlie"></label>
</div>
<hr>
<div>
<label>Email 1: <input type="email" name="email" value="alice@example.com"></label>
</div>
<div>
<label>Email 2: <input type="email" name="email" value="bob@example.com"></label>
</div>
<input type="submit" value="Submit">
</form>On rust side I am using following code #[derive(Deserialize, Debug)]
struct FormData {
name: Vec<String>,
email: Vec<String>,
}
async fn accept_form(form: Form<FormData>) -> Html<String> {
println!("Successfully deserialized: {:#?}", form);
Html("42".to_string())
}When I submit the form I get following error Is this expected behavior? Or am I missing something obvious? I saw some mentions of using |
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Replies: 1 comment 3 replies
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Take a look at |
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Thanks! |
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Is there a minimal example of how to use use axum::{
response::{Html, IntoResponse},
routing::get,
Router,
};
use axum_extra::extract::Form;
use serde::Deserialize;
use std::net::SocketAddr;
// 1. Define struct with Vec<String> for repeated field names
#[derive(Deserialize, Debug)]
struct FormData {
// These fields will collect all values submitted with the corresponding name
name: Vec<String>,
email: Vec<String>,
}
#[axum::debug_handler]
async fn accept_form(Form(form): Form<FormData>) -> impl IntoResponse {
println!("Successfully deserialized: {:#?}", form);
Html("Data received".to_string()) // Changed response for clarity, though not strictly PII
}
#[tokio::main]
async fn main() {
let app = Router::new().route("/", get(show_form).post(accept_form));
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
println!("Listening on {}", addr);
let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
axum::serve(listener, app).await.unwrap();
}
// 2. Provide an HTML form with multiple inputs having the same 'name'
async fn show_form() -> Html<&'static str> {
Html(
r#"
<!doctype html>
<html>
<head><title>Axum Form MRE (Repeated Names)</title></head>
<body>
<h1>Repeated Field Names Test</h1>
<form action="/" method="post">
<div>
<label>Name 1: <input type="text" name="name" value="User1"></label>
</div>
<div>
<label>Name 2: <input type="text" name="name" value="User2"></label>
</div>
<div>
<label>Name 3: <input type="text" name="name" value="User3"></label>
</div>
<hr>
<div>
<label>Email 1: <input type="email" name="email" value="user1@example.com"></label>
</div>
<div>
<label>Email 2: <input type="email" name="email" value="user2@example.com"></label>
</div>
<input type="submit" value="Submit">
</form>
<p>Submitting this form should succeed, demonstrating that axum::Form can collect multiple values for the same field name into a Vec<String>.</p>
</body>
</html>
"#,
)
}I get the following error |
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I don't see how that error would happen unless you're using mismatched versions of |
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Take a look at
axum_extra::extract::Form.