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<?php |
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/* |
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* This file is part of Respect/Validation. |
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* |
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* (c) Alexandre Gomes Gaigalas <[email protected]> |
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* |
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* For the full copyright and license information, please view the "LICENSE.md" |
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* file that was distributed with this source code. |
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*/ |
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namespace Respect\Validation\Rules; |
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use ArrayAccess; |
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use Respect\Validation\Exceptions\ComponentException; |
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use Respect\Validation\Rule; |
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/** |
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* Validates an array key or an object property using `.` to represent nested data. |
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* |
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* @author Henrique Moody <[email protected]> |
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* @author Ivan Zinovyev <[email protected]> |
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* |
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* @since 1.0.0 |
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*/ |
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final class KeyNested extends AbstractRelated |
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{ |
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/** |
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* Initializes the rule. |
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* |
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* @param string $reference |
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* @param Rule $rule |
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* @param bool $mandatory |
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*/ |
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public function __construct(string $reference, Rule $rule = null, bool $mandatory = true) |
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{ |
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parent::__construct($reference, $rule, $mandatory); |
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} |
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/** |
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* Verifies if the input has the reference. |
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* |
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* @param mixed $input |
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* @param string $reference |
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* |
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* @return bool |
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*/ |
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protected function hasReference($input, $reference): bool |
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{ |
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try { |
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$this->getReferenceValue($input, $reference); |
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} catch (ComponentException $exceptions) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Get the value for the reference on the input. |
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* |
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* @param mixed $input |
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* @param string $reference |
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* |
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* @throws ComponentException When the value cannot be fetch |
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* |
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* @return mixed |
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*/ |
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protected function getReferenceValue($input, $reference) |
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{ |
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if (is_scalar($input)) { |
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$message = sprintf('Cannot select the %s in the given data', $reference); |
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throw new ComponentException($message); |
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} |
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$keys = explode('.', rtrim($reference, '.')); |
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$value = $input; |
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while (!is_null($key = array_shift($keys))) { |
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$value = $this->getValue($reference, $value, $key); |
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} |
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return $value; |
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} |
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private function getValue(string $reference, $value, string $key) |
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{ |
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if (is_array($value) || $value instanceof ArrayAccess) { |
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return $this->getValueFromArray($reference, $value, $key); |
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} |
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if (is_object($value)) { |
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return $this->getValueFromObject($reference, $value, $key); |
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} |
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$message = sprintf('Cannot select the reference %s from the given data', $reference); |
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throw new ComponentException($message); |
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} |
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private function getValueFromArray(string $reference, $array, string $key) |
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{ |
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if ((is_array($array) && !array_key_exists($key, $array)) |
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|| !isset($array[$key])) { |
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$message = sprintf('Cannot select the key %s from the given array', $reference); |
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throw new ComponentException($message); |
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} |
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return $array[$key]; |
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} |
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private function getValueFromObject(string $reference, $object, string $property) |
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{ |
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if (empty($property) || !property_exists($object, $property)) { |
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$message = sprintf('Cannot select the property %s from the given object', $reference); |
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throw new ComponentException($message); |
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} |
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return $object->{$property}; |
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} |
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} |
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Respect /
Validation
