RustAPI Validate

Declarative, type-safe request validation.

This crate integrates the validator library deeply into the RustAPI extractor system.

The Problem

Manually checking if email.contains("@") in every handler is tedious and error-prone.

The Solution

Define rules on your structs. RustAPI automatically runs them and returns 422 Unprocessable Entity if constraints are violated.

Usage

use rustapi_rs::prelude::*;

#[derive(Deserialize, Validate, Schema)]
pub struct UserSignup {
    #[validate(email(message = "Invalid email address"))]
    pub email: String,

    #[validate(length(min = 8, message = "Password too short"))]
    pub password: String,

    #[validate(range(min = 18, max = 100))]
    pub age: u8,
}

// If execution enters this function, `body` is GUARANTEED to be valid.
#[post("/signup")]
async fn signup(Json(body): Json<UserSignup>) -> impl Responder {
    // ...
}

Supported Validators

• email
• url
• length
• range
• custom (use your own functions)
• custom_async (async custom functions)
• contains
• regex