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Diffstat (limited to 'vendor/ipl/validator/src/CallbackValidator.php')
-rw-r--r-- | vendor/ipl/validator/src/CallbackValidator.php | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/vendor/ipl/validator/src/CallbackValidator.php b/vendor/ipl/validator/src/CallbackValidator.php new file mode 100644 index 0000000..611a45e --- /dev/null +++ b/vendor/ipl/validator/src/CallbackValidator.php @@ -0,0 +1,45 @@ +<?php + +namespace ipl\Validator; + +/** + * Validator that uses a callback for the actual validation + * + * # Example Usage + * ``` + * $dedup = new CallbackValidator(function ($value, CallbackValidator $validator) { + * if (already_exists_in_database($value)) { + * $validator->addMessage('Record already exists in database'); + * + * return false; + * } + * + * return true; + * }); + * + * $dedup->isValid($id); + * ``` + */ +class CallbackValidator extends BaseValidator +{ + /** @var callable Validation callback */ + protected $callback; + + /** + * Create a new callback validator + * + * @param callable $callback Validation callback + */ + public function __construct(callable $callback) + { + $this->callback = $callback; + } + + public function isValid($value) + { + // Multiple isValid() calls must not stack validation messages + $this->clearMessages(); + + return call_user_func($this->callback, $value, $this); + } +} |