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NullableRule.php
46 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Validates that a value is present and null. |
| 5 | * |
| 6 | * @package Framework |
| 7 | * @subpackage Validation\Rules |
| 8 | * @since 1.0.0 |
| 9 | */ |
| 10 | namespace Kirki\Framework\Validation\Rules; |
| 11 | |
| 12 | \defined('ABSPATH') || exit; |
| 13 | class NullableRule extends BaseRule |
| 14 | { |
| 15 | /** |
| 16 | * Check for strict data type |
| 17 | * |
| 18 | * @var bool |
| 19 | * |
| 20 | * @since 1.0.0 |
| 21 | */ |
| 22 | protected $check_strict_data_type = \true; |
| 23 | /** |
| 24 | * Determine if the value is present and can be null. |
| 25 | * |
| 26 | * @return bool |
| 27 | * |
| 28 | * @since 1.0.0 |
| 29 | */ |
| 30 | public function validate_rule() |
| 31 | { |
| 32 | return \is_null($this->value) || $this->value === ''; |
| 33 | } |
| 34 | /** |
| 35 | * Get the error message for a missing required field. |
| 36 | * |
| 37 | * @return string |
| 38 | * |
| 39 | * @since 1.0.0 |
| 40 | */ |
| 41 | public function get_error_message() |
| 42 | { |
| 43 | return ''; |
| 44 | } |
| 45 | } |
| 46 |