domainstack-envelope

Convert domainstack validation errors to error-envelope HTTP error format. Part of the domainstack full-stack validation ecosystem.

Usage

Add this to your Cargo.toml:

[dependencies]
domainstack = "1.0"
domainstack-envelope = "1.0"

Convert validation errors to error-envelope format:

use domainstack::{Validate, ValidationError};
use domainstack_envelope::IntoEnvelopeError;
use error_envelope::Error;

fn create_user(user: User) -> Result<User, Error> {
    user.validate()
        .map_err(|e| e.into_envelope_error())?;

    Ok(user)
}

Error Format

Converts structured validation errors to error-envelope's standard HTTP error format:

{
  "error": {
    "code": "validation_failed",
    "message": "Validation failed",
    "details": {
      "email": ["Invalid email format"],
      "age": ["Must be at least 18"]
    }
  }
}

Features

• Structured field paths - Nested fields like user.address.city map correctly
• Multiple violations per field - All errors preserved
• HTTP status codes - Returns 400 Bad Request for validation errors
• Standard format - Compatible with error-envelope ecosystem

Framework Integration

Use with framework adapters for automatic error conversion:

// Axum
use domainstack_axum::{DomainJson, ErrorResponse};

async fn handler(DomainJson(user): DomainJson<User>) -> Result<Json<User>, ErrorResponse> {
    // Validation errors automatically converted to error-envelope format
    Ok(Json(user))
}

// Actix-web
use domainstack_actix::{DomainJson, ErrorResponse};

async fn handler(user: DomainJson<User>) -> Result<HttpResponse, ErrorResponse> {
    // Validation errors automatically converted to error-envelope format
    Ok(HttpResponse::Ok().json(user.into_inner()))
}

Documentation

For complete documentation, examples, and usage guides, see:

• domainstack documentation
• error-envelope documentation
• GitHub repository

License

Apache 2.0