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<?php
declare(strict_types=1);
namespace Asko\Hird\Validators;
/**
* Implements a length validator that has a job of validating
* that a given string is of correct length.
*
* @author Asko Nomm <asko@asko.dev>
*/
class LenValidator implements Validator
{
public function __construct(
private array $fields,
private array $fieldNames,
) {
}
/**
* Returns a boolean `true` when given `$value` is as long as
* required. Returns `false` otherwise.
*
* @param mixed $value
* @param mixed $modifier
* @return boolean
*/
public function validate(string $field, mixed $value, mixed $modifier = null): bool
{
// If no modifier present then this validator will always validate.
if (!$modifier) {
return true;
}
if (!isset($value) || strlen($value) < (int) $modifier) {
return false;
}
return true;
}
/**
* Composes the error message in case the validation fails.
*
* @param string $field
* @param mixed $modifier
* @return string
*/
public function composeError(string $field, mixed $modifier = null): string
{
return "{$this->fieldNames[$field]} is shorter than the required {$modifier} characters.";
}
}
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