PHP code example of elie29 / validator

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

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

    

elie29 / validator example snippets

use Elie\Validator\Rule\EmailRule;
use Elie\Validator\Rule\MultipleAndRule;
use Elie\Validator\Rule\NumericRule;
use Elie\Validator\Rule\RangeRule;
use Elie\Validator\Rule\StringRule;
use Elie\Validator\Validator;

/**
 * A key could have multiple rules
 *  - name could not be empty (
    ['age', NumericRule::class, NumericRule::MAX => 60],
    ['age', RangeRule::class, RangeRule::RANGE => [30, 40, 50]],
    // Use composition instead of validating the key twice
    ['email', MultipleAndRule::class, MultipleAndRule::REQUIRED => true, MultipleAndRule::RULES => [
        [StringRule::class, StringRule::MAX => 255],
        [EmailRule::class],
    ]],
];

$validator = new Validator($_POST, $rules, true); // stop processing on error.

$validator->validate(); // bool depends on $_POST content

use Elie\Validator\Rule\AbstractRule;

class MyValueRule extends AbstractRule
{

    public const INVALID_MY_VALUE = 'invalidMyValue';

    protected $my_value = null;

    public function __construct(string $key, $value, array $params = [])
    {
        parent::__construct($key, $value, $params);

        if (isset($params['my_value'])) {
            $this->my_value = $params['my_value'];
        }

        // + in order to add non existent key
        $this->messages += [
            $this::INVALID_MY_VALUE => '%key%: %value% my message %my_value%'
        ];
    }

    public function validate(): int
    {
        $run = parent::validate();

        if ($run !== $this::CHECK) {
            return $run;
        }

        if ($this->value !== $this->my_value) {
            return $this->setAndReturnError($this::INVALID_MY_VALUE, [
                '%my_value%' => $this->stringify($this->my_value)
            ]);
        }

        return $this::VALID;
    }
}

use Assert\Assertion;
use Elie\Validator\Rule\EmailRule;
use Elie\Validator\Rule\NumericRule;
use Elie\Validator\Rule\StringRule;
use Elie\Validator\Validator;
use Webmozart\Assert\Assert;

$rules =[
    ['age', NumericRule::class, NumericRule::MAX => 60],
    ['name', StringRule::class, StringRule::MIN => 1, StringRule::REQUIRED => true],
    ['email', EmailRule::class, EmailRule::REQUIRED => true],
];

$validator = new Validator($_POST, $rules);

Assert::true($validator->validate(), $validator->getImplodedErrors());

// OR

Assertion::true($validator->validate(), $validator->getImplodedErrors());

$rules = [
    ['user', JsonRule::class, JsonRule::REQUIRED => true],
];

$validator = new Validator($_POST, $rules);

Assertion::true($validator->validate()); // this assertion validates that the user is in Json format

$validatedPost = $validator->getValidatedContext();

// But we need to validate user data as well (suppose it should contain name and age):

$rules = [
    ['name', MatchRule::class, MatchRule::PATTERN => '/^[a-z]{1,20}$/i'],
    ['age', NumericRule::class, NumericRule::MAX => 80],
];
$validator->setRules($rules);

// Decode user as it is a valid JSON
$user = json_decode($validatedPost['user'], true);
$validator->setContext($user); // new context is now user data

Assertion::true($validator->validate()); // this assertion validates user data

/*
Validate accepts a boolean argument - mergedValidatedContext - which is false by default. If set to true
$validator->getValidatedContext() would return:

array:4 [▼
  "email" => "[email protected]"
  "user" => "{"name": "John", "age": 25}"
  "name" => "John"
  "age" => 25
]
*/

$rules = [
    // With Json decode, validated value will be decoded into array
    ['users', JsonRule::class, JsonRule::REQUIRED => true, JsonRule::DECODE => true],
];

$validator = new Validator([
    'users' => '[{"name":"John","age":25},{"name":"Brad","age":42}]'
], $rules);

Assertion::true($validator->validate()); // this validate that users is a valid Json format

// But we need to validate all user data as well (suppose it should contain name and age):
$validator->setRules([
    ['name', MatchRule::class, MatchRule::PATTERN => '/^[a-z]{1,20}$/i'],
    ['age', NumericRule::class, NumericRule::MAX => 80],
]);

$validatedContext = $validator->getValidatedContext();

$users = $validatedContext['users'];

Assertion::isArray($users);

foreach ($users as $user) {
    // each user is a new context
    $validator->setContext($user);
    // do not merge data !!
    Assertion::true($validator->validate()); // we could validate all users and determine which ones are invalid!
}

$rules = [
    ['users', CollectionRule::class, CollectionRule::JSON => true, CollectionRule::RULES => [
        ['name', MatchRule::class, MatchRule::PATTERN => '/^[a-z]{1,20}$/i'],
        ['age', NumericRule::class, NumericRule::MAX => 80],
    ]],
];

$data = [
    'users' => '[{"name":"John","age":25},{"name":"Brad","age":42}]'
];

$validator = new Validator($data, $rules);

assertThat($validator->validate(), is(true));

$users = $validator->getValidatedContext()['users'];

assertThat($users, arrayWithSize(2));