README

A robust Laravel validation package for Spanish identification numbers:

• NIE (Número de Identidad de Extranjero)
• DNI (Documento Nacional de Identidad)

Validates according to the official algorithm regulated by Real Decreto 1553/2005, Artículo 11.

Features

✅ Combined Support - Validates both NIE and DNI numbers
✅ Accurate Validation - Implements official Spanish algorithms
✅ Flexible Input - Accepts various formats (spaces, hyphens, mixed case)
✅ Laravel Integration - Seamless integration with Laravel's validator
✅ Multilingual - Built-in English and Spanish error messages
✅ Type Safe - Strict type declarations throughout
✅ Well Tested - 100+ test cases with comprehensive coverage
✅ Zero Dependencies - No external dependencies beyond Laravel

Requirements

• PHP 8.2 or higher
• Laravel 10.x, 11.x, or 12.x

Installation

Install via Composer:

composer require sevada/nie-validator

The service provider will be automatically registered.

Publishing Configuration (Optional)

Publish the configuration file:

php artisan vendor:publish --tag=nif-config

Publish translation files:

php artisan vendor:publish --tag=nif-translations

Usage

Basic Validation

Use the nie or dni validation rules in your validation logic:

use Illuminate\Http\Request;

public function store(Request $request)
{
    $validated = $request->validate([
        'nie_number' => ['required', 'nie'],
        'dni_number' => ['required', 'dni'],
    ]);
    
    // Numbers are valid!
}

Using Rule Classes

You can also use the rule classes directly:

use Sevada\NifValidator\Rules\Nie;
use Sevada\NifValidator\Rules\Dni;

$request->validate([
    'nie_number' => ['required', new Nie],
    'dni_number' => ['required', new Dni],
]);

Accepted Formats

The validator automatically normalizes input and accepts various formats:

NIE Examples:

'X1234567L'      // ✅ Standard format
'Y-1234567-X'    // ✅ With hyphens
'Z 1234567 R'    // ✅ With spaces

DNI Examples:

'12345678Z'      // ✅ Standard format
'12345678-Z'     // ✅ With hyphens
'12345678 Z'     // ✅ With spaces

Configuration

The default configuration (config/nif.php):

return [
    // Official control letter sequence (DO NOT MODIFY)
    'control_letters' => str_split('TRWAGMYFPDXBNJZSQVHLCKE'),
    
    // Validation strictness
    'strict_format' => false, // Allow spaces and hyphens
];

Translations

English (Default)

The :attribute is not a valid Spanish NIE (Número de Identidad de Extranjero).
The :attribute is not a valid Spanish DNI (Documento Nacional de Identidad).

Spanish

El :attribute no es un NIE (Número de Identidad de Extranjero) válido.
El :attribute no es un DNI (Documento Nacional de Identidad) válido.

To use Spanish translations, set your application locale:

app()->setLocale('es');

Testing

Run the test suite:

composer test

Security

This package validates mathematical format but does not verify authenticity with official databases. See SECURITY.md.

Important: Handle national ID numbers as sensitive personal data (GDPR).

License

The MIT License (MIT). Please see LICENSE for more information.