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| Name | Lines | Methods | CRAP | ||||
|---|---|---|---|---|---|---|---|
| __construct | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | ||
| defaultMessage | 100.00% | 1 / 1 | 100.00% | 1 / 1 | 1 | ||
| validate | 100.00% | 6 / 6 | 100.00% | 1 / 1 | 3 | ||
| isEmpty | 100.00% | 3 / 3 | 100.00% | 1 / 1 | 4 | ||
| [Lucent\Validation\Constraint] withMessage | 100.00% | 2 / 2 | 100.00% | 1 / 1 | 1 | ||
| [Lucent\Validation\Constraint] message | 100.00% | 6 / 6 | 100.00% | 1 / 1 | 3 | ||
| 20 | final class Optional extends Constraint | |
| 21 | { | |
| 22 | /** | |
| 23 | * Create an optional wrapper around another constraint. | |
| 24 | * | |
| 25 | * @param Constraint $inner The constraint to apply when a value is present. | |
| 26 | */ | |
| 27 | public function __construct(private readonly Constraint $inner) {} | |
| 28 | ||
| 29 | /** | |
| 30 | * Delegate the error message to the wrapped constraint. | |
| 31 | * | |
| 32 | * @return string|Closure(FieldContext): string The inner constraint's message or closure. | |
| 33 | */ | |
| 34 | #[Override] | |
| 35 | protected function defaultMessage(): string|Closure|null | |
| 36 | { | |
| 37 | return fn(FieldContext $ctx) => $this->inner->message($ctx); | |
| 38 | } | |
| 39 | ||
| 40 | /** | |
| 41 | * Validate the wrapped constraint, skipping it when the field is empty. | |
| 42 | * | |
| 43 | * Validation is skipped when the field was not present in the request | |
| 44 | * body, or when its value is null, an empty string, or an empty array. | |
| 45 | * This mirrors the set of values {@see \Lucent\Validation\Constraints\Required} | |
| 46 | * treats as missing, so an optional field may be omitted or left blank. | |
| 47 | * Any other value is validated by the inner constraint. | |
| 48 | * | |
| 49 | * @param FieldContext $ctx The context of the field being validated. | |
| 50 | * @return bool True when the field is empty, otherwise the result of the wrapped constraint. | |
| 51 | */ | |
| 52 | #[Override] | |
| 53 | public function validate(FieldContext $ctx): bool | |
| 54 | { | |
| 55 | if (!$ctx->present) { | |
| 56 | return true; | |
| 57 | } | |
| 58 | ||
| 59 | if ($this->isEmpty($ctx->value)) { | |
| 60 | // Normalize a present-but-empty value to null so the result | |
| 61 | // reflects the documented behaviour of an optional field that was | |
| 62 | // left blank. Absent fields are left untouched so they do not | |
| 63 | // appear in the result. | |
| 64 | $ctx->normalize(null); | |
| 65 | return true; | |
| 66 | } | |
| 67 | ||
| 68 | return $this->inner->validate($ctx); | |
| 69 | } | |
| 70 | ||
| 71 | /** | |
| 72 | * Determine whether a value counts as empty. | |
| 73 | * | |
| 74 | * @param mixed $value The value to inspect. | |
| 75 | * @return bool True if the value is null, an empty string, or an empty array. | |
| 76 | */ | |
| 77 | private function isEmpty(mixed $value): bool | |
| 78 | { | |
| 79 | if ($value === null || $value === '') { | |
| 80 | return true; | |
| 81 | } | |
| 82 | ||
| 83 | return is_array($value) && $value === []; | |
| 84 | } | |
| 85 | } |
Inherited from Lucent\Validation\Constraint
| 38 | final public function withMessage(string|\Closure $message): static | |
| 39 | { | |
| 40 | $this->customMessage = $message; | |
| 41 | return $this; | |
| 42 | } |
| 56 | final public function message(FieldContext $ctx): ?string | |
| 57 | { | |
| 58 | $message = $this->customMessage ?? $this->defaultMessage(); | |
| 59 | ||
| 60 | if ($message === null) { | |
| 61 | return null; | |
| 62 | } | |
| 63 | ||
| 64 | if ($message instanceof \Closure) { | |
| 65 | return call_user_func($message, $ctx); | |
| 66 | } | |
| 67 | ||
| 68 | return $message; | |
| 69 | } |