PHP code example of nette / schema

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

nette / schema example snippets

$processor = new Nette\Schema\Processor;

try {
	$normalized = $processor->process($schema, $data);
} catch (Nette\Schema\ValidationException $e) {
	echo 'Data is invalid: ' . $e->getMessage();
}

use Nette\Schema\Expect;

$schema = Expect::structure([
	'processRefund' => Expect::bool(),
	'refundAmount' => Expect::int(),
]);

$data = [
	'processRefund' => true,
	'refundAmount' => 17,
];

$normalized = $processor->process($schema, $data); // OK, it passes

$data = [
	'refundAmount' => 17,
];

$normalized = $processor->process($schema, $data); // OK, it passes
// $normalized = {'processRefund' => null, 'refundAmount' => 17}

$schema = Expect::structure([
	'processRefund' => Expect::anyOf(true, false, 1, 0)->castTo('bool'),
	'refundAmount' => Expect::int(),
]);

$normalized = $processor->process($schema, $data);
is_bool($normalized->processRefund); // true

Expect::string($default = null)
Expect::int($default = null)
Expect::float($default = null)
Expect::bool($default = null)
Expect::null()
Expect::array($default = [])

Expect::type('bool|string|array')

$schema = Expect::arrayOf('string');

$processor->process($schema, ['hello', 'world']); // OK
$processor->process($schema, ['a' => 'hello', 'b' => 'world']); // OK
$processor->process($schema, ['key' => 123]); // ERROR: 123 is not a string

$schema = Expect::arrayOf('string', 'int');

$processor->process($schema, ['hello', 'world']); // OK
$processor->process($schema, ['a' => 'hello']); // ERROR: 'a' is not int

$schema = Expect::listOf('string');

$processor->process($schema, ['a', 'b']); // OK
$processor->process($schema, ['a', 123]); // ERROR: 123 is not a string
$processor->process($schema, ['key' => 'a']); // ERROR: is not a list
$processor->process($schema, [1 => 'a', 0 => 'b']); // ERROR: is not a list

Expect::arrayOf(Expect::bool())

$schema = Expect::listOf(
	Expect::anyOf('a', true, null),
);

$processor->process($schema, ['a', true, null, 'a']); // OK
$processor->process($schema, ['a', false]); // ERROR: false does not belong there

$schema = Expect::listOf(
	Expect::anyOf(Expect::string(), true, null),
);

$processor->process($schema, ['foo', true, null, 'bar']); // OK
$processor->process($schema, [123]); // ERROR

// default is 'hello'
Expect::anyOf(Expect::string('hello'), true, null)->firstIsDefault();

$schema = Expect::structure([
	', // the default value is null
]);

$processor->process($schema, ['optional' => '']);
// ERROR: option '

$schema = Expect::structure([
	',
])->skipDefaults();

$processor->process($schema, ['

$schema = Expect::structure([
	'optional' => Expect::string(),
	'nullable' => Expect::string()->nullable(),
]);

$processor->process($schema, ['optional' => null]);
// ERROR: 'optional' expects to be string, null given.

$processor->process($schema, ['nullable' => null]);
// OK, returns {'optional' => null, 'nullable' => null}

$schema = Expect::structure([
	'key' => Expect::string(),
]);

$processor->process($schema, ['additional' => 1]);
// ERROR: Unexpected item 'additional'

$schema = Expect::structure([
	'key' => Expect::string(),
])->otherItems(Expect::int());

$processor->process($schema, ['additional' => 1]); // OK
$processor->process($schema, ['additional' => true]); // ERROR

$schema = Expect::structure([
	'old' => Expect::int()->deprecated('The item %path% is deprecated'),
]);

$processor->process($schema, ['old' => 1]); // OK
$processor->getWarnings(); // ["The item 'old' is deprecated"]

// array, at least 10 items, maximum 20 items
Expect::array()->min(10)->max(20);

// string, at least 10 characters long, maximum 20 characters
Expect::string()->min(10)->max(20);

// integer, between 10 and 20 inclusive
Expect::int()->min(10)->max(20);

// string, maximum 20 characters
Expect::string()->max(20);

// just 9 digits
Expect::string()->pattern('\d{9}');

$countIsEven = fn($v) => count($v) % 2 === 0;

$schema = Expect::arrayOf('string')
	->assert($countIsEven); // the count must be even

$processor->process($schema, ['a', 'b']); // OK
$processor->process($schema, ['a', 'b', 'c']); // ERROR: 3 is not even

Expect::string()->assert('is_file'); // the file must exist

$schema = Expect::arrayOf('string')
	->assert($countIsEven, 'Even items in array');

$processor->process($schema, ['a', 'b', 'c']);
// Failed assertion "Even items in array" for item with value array.

// conversion to uppercase:
Expect::string()->transform(fn(string $s) => strtoupper($s));

Expect::type('string|int')
	->castTo('string')
	->assert('ctype_lower', 'All characters must be lowercased')
	->transform(fn(string $s) => strtoupper($s)); // conversion to uppercase

Expect::string()
	->transform(function (string $s, Nette\Schema\Context $context) {
		if (!ctype_lower($s)) {
			$context->addError('All characters must be lowercased', 'my.case.error');
			return null;
		}

		return strtoupper($s);
	});

Expect::scalar()->castTo('string');

class Info
{
	public bool $processRefund;
	public int $refundAmount;
}

Expect::structure([
	'processRefund' => Expect::bool(),
	'refundAmount' => Expect::int(),
])->castTo(Info::class);

// creates '$obj = new Info' and writes to $obj->processRefund and $obj->refundAmount

class Info
{
	public function __construct(
		public bool $processRefund,
		public int $refundAmount,
	) {
	}
}

// creates $obj = new Info(processRefund: ..., refundAmount: ...)

Expect::string()->castTo(DateTime::class);
// creates new DateTime(...)

$explode = fn($v) => explode(' ', $v);

$schema = Expect::arrayOf('string')
	->before($explode);

$normalized = $processor->process($schema, 'a b c');
// OK, returns ['a', 'b', 'c']

class Config
{
	public string $name;
	public ?string $password;
	public bool $admin = false;
}

$schema = Expect::from(new Config);

$data = [
	'name' => 'jeff',
];

$normalized = $processor->process($schema, $data);
// $normalized instanceof Config
// $normalized = {'name' => 'jeff', 'password' => null, 'admin' => false}

$schema = Expect::from(new class {
	public string $name;
	public ?string $password;
	public bool $admin = false;
});

$schema = Expect::from(new Config, [
	'name' => Expect::string()->pattern('\w:.*'),
]);