Attribute Macro domain_error 

#[domain_error]

Define a domain error with automatic HTTP response conversion

This macro automatically:

1. Derives Debug and Clone for the type
2. Implements Display, Error, and HttpError traits
3. Implements From<T> for FrameworkError for seamless ? usage

Attributes

• status: HTTP status code (default: 500)
• message: Error message for Display (default: struct name converted to sentence)

Example

use ferro::domain_error;

#[domain_error(status = 404, message = "User not found")]
pub struct UserNotFoundError {
    pub user_id: i32,
}

// Usage in controller - just use ? operator
pub async fn get_user(id: i32) -> Result<User, FrameworkError> {
    users.find(id).ok_or(UserNotFoundError { user_id: id })?
}