Run validators for null values

Author: tobyzerner

src/Schema/Concerns/SetsValue.php

@@ -129,11 +129,8 @@ public function deserializeValue(mixed $value, Context $context): mixed
      */
     public function validateValue(mixed $value, callable $fail, Context $context): void
     {
-        if ($value === null) {
-            if (!$this->nullable) {
-                $fail('must not be null');
-            }
-            return;
+        if ($value === null && !$this->nullable) {
+            $fail('must not be null');
         }
 
         foreach ($this->validators as $validator) {

src/Schema/Field/Boolean.php

@@ -11,7 +11,7 @@ public function __construct(string $name)
         $this->serialize(static fn($value) => (bool) $value);
 
         $this->validate(static function (mixed $value, callable $fail): void {
-            if (!is_bool($value)) {
+            if (!is_bool($value) && $value !== null) {
                 $fail('must be a boolean');
             }
         });

src/Schema/Field/Date.php

@@ -29,7 +29,7 @@ public function __construct(string $name)
         });
 
         $this->validate(static function (mixed $value, callable $fail): void {
-            if (!$value instanceof \DateTime) {
+            if (!$value instanceof \DateTime && $value !== null) {
                 $fail('must be a date');
             }
         });

src/Schema/Field/DateTime.php

@@ -27,7 +27,7 @@ public function __construct(string $name)
         });
 
         $this->validate(static function (mixed $value, callable $fail): void {
-            if (!$value instanceof \DateTime) {
+            if (!$value instanceof \DateTime && $value !== null) {
                 $fail('must be a date-time');
             }
         });

src/Schema/Field/Number.php

@@ -19,6 +19,10 @@ public function __construct(string $name)
         $this->serialize(static fn($value) => (float) $value);
 
         $this->validate(function (mixed $value, callable $fail): void {
+            if ($value === null) {
+                return;
+            }
+
             if (!is_numeric($value)) {
                 $fail('must be numeric');
                 return;

src/Schema/Field/Str.php

@@ -17,6 +17,10 @@ public function __construct(string $name)
         $this->serialize(static fn($value) => (string) $value);
 
         $this->validate(function (mixed $value, callable $fail): void {
+            if ($value === null) {
+                return;
+            }
+
             if (!is_string($value)) {
                 $fail('must be a string');
                 return;