File: docs/ComplexExamples.md

Example: Using a Class Method for Validation

This code uses a custom validation rule defined as a class method to ensure that the user.name field is not John Doe. It first checks a valid name (John Smith) and then an invalid one (John Doe).

use Tests\Helpers\CustomRules;

$validationRules = [
    'user.name' => [[CustomRules::class, 'isNotJohnDoe'], 'string'],
];

$dataToValidate = [
    'user' => [
        'name' => 'John Smith'
    ],
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

$dataToValidate['user']['name'] = 'John Doe';
$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

Example: Validating Nested Data Structures

This code validates a complex nested data structure with multiple fields and rules. It checks various fields like user.name, user.age, address.city, and images.*.url to ensure they meet the specified validation criteria.

$validationRules = [
    'user.name' => 'string',
    'user.age' => 'numeric',
    'user.is_active' => 'boolean',
    'address' => 'array',
    'address.city' => 'string',
    'address.street' => ['string', 'different:address.city', 'different:address.street2', 'different:address.no'],
    'address.street2' => 'not_null',
    'address.no' => 'string',
    'images.*.url' => 'string',
    'images.*.role' => function ($data) {
        return in_array($data, ['profile_photo', 'album_photo']);
    },
    'images.*.description' => 'string',
];

$dataToValidate = [
    'user' => [
        'name' => 'John Doe',
        'age' => 30,
        'is_active' => true,
    ],
    'address' => [
        'city' => 'New York',
        'street' => 'First Avenue',
        'street2' => '',
        'no' => '52A',
    ],
    'images' => [
        [
            'url' => 'image1.jpg',
            'role' => 'profile_photo',
            'description' => 'This is me this year.',
        ],
        [
            'url' => 'image2.jpg',
            'role' => 'album_photo',
            'description' => 'This is a photo of me.',
        ],
    ],
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

Example: Validating Nested Data with Errors

This code validates a complex nested data structure and ensures that invalid data fails the validation. It checks various fields like user.name, user.age, address.city, and images.*.url with invalid values to ensure they do not meet the specified validation criteria.

$validationRules = [
    'user.name' => 'string',
    'user.age' => 'numeric',
    'user.is_active' => 'boolean',
    'address' => 'array',
    'address.city' => 'string',
    'address.street' => ['string', 'different:address.city', 'different:address.street2', 'different:address.no'],
    'address.street2' => 'not_null',
    'address.no' => 'string',
    'images.*.url' => 'string',
    'images.*.role' => function ($data) {
        return in_array($data, ['profile_photo', 'album_photo']);
    },
    'images.*.description' => 'string',
];

$dataToValidate = [
    'user' => [
        'name' => 'John Doe',
        'age' => 30,
        'is_active' => true,
    ],
    'address' => [
        'city' => 'New York',
        'street' => 'First Avenue',
        'street2' => '',
        'no' => '52A',
    ],
    'images' => [
        [
            'url' => 'image1.jpg',
            'role' => 'profile_photo',
            'description' => 'This is me this year.',
        ],
        [
            'url' => 'image2.jpg',
            'role' => 'just_an_image', // Invalid role
            'description' => null, // Invalid description
        ],
    ],
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

Example: Using an Object Method for Validation

This code uses a custom validation rule defined as an object method to ensure that the user.name field is not John Doe. It first checks a valid name (John Smith) and then an invalid one (John Doe).

$customRules = new CustomRules();
$validationRules = [
    'user.name' => [[$customRules, 'isNotJohnDoe'], 'string'],
];

$dataToValidate = [
    'user' => [
        'name' => 'John Smith'
    ],
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

$dataToValidate['user']['name'] = 'John Doe';
$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

Example: Using a Closure for Validation

This code uses a custom validation rule defined as a closure to ensure that the user.name field is John Doe. It checks a valid name (John Doe).

$validationRules = [
    'user.name' => [
        function ($data) {
            return $data === 'John Doe';
        },
        'string',
    ],
];

$dataToValidate = [
    'user' => [
        'name' => 'John Doe'
    ],
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

Example: Validating Multiple Rules

This code validates that the username field meets multiple criteria: it is required, a string, and alphanumeric. It first checks a valid username (johndoe123) and then an invalid one ('').

$validationRules = [
    'username' => 'required|string|alpha_num',
];
$dataToValidate = [
    'username' => 'johndoe123',
];

$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

$dataToValidate['username'] = '';
$result = Validator::make($validationRules, $dataToValidate);
if ($result->isFailed()) {
    echo "Validation failed";
} else {
    echo "Validation successful!";
}

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