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<?php
namespace Rakit\Validation\Rules;
use Rakit\Validation\Rule;
use InvalidArgumentException;
use Closure;
class Callback extends Rule
{
/** @var string */
protected $message = "The :attribute is not valid";
/** @var array */
protected $fillableParams = ['callback'];
/**
* Set the Callback closure
*
* @param Closure $callback
* @return self
*/
public function setCallback(Closure $callback): Rule
{
return $this->setParameter('callback', $callback);
}
/**
* Check the $value is valid
*
* @param mixed $value
* @return bool
* @throws \Exception
*/
public function check($value): bool
{
$this->requireParameters($this->fillableParams);
$callback = $this->parameter('callback');
if (false === $callback instanceof Closure) {
$key = $this->attribute->getKey();
throw new InvalidArgumentException("Callback rule for '{$key}' is not callable.");
}
$callback = $callback->bindTo($this);
$invalidMessage = $callback($value);
if (is_string($invalidMessage)) {
$this->setMessage($invalidMessage);
return false;
} elseif (false === $invalidMessage) {
return false;
}
return true;
}
}