Multi value validation and transformation

CHANGELOG.md

@@ -3,6 +3,8 @@ All notable changes to this project will be documented in this file.
 Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
 ## [Unreleased][unreleased]
+### Fixed
+- Multi value validation and transformation if expected type is not array but instead expects array of specific type. For example if expected type is integer and value is array of integers, validation and transformation will pass.
 
 ## 3.4.3
 ### Fixed

src/Validation/InputType.php

@@ -9,5 +9,5 @@ class InputType
     public const DOUBLE = 'double';
     public const FLOAT = 'float';
     public const STRING = 'string';
-    public const ARRAY = 'array';
+    public const ARRAY = 'array'; // Returns array of mixed values. If you want to validate array of specific type use setMulti() with expected values in array
 }

src/Validation/InputValidator.php

@@ -20,6 +20,10 @@ public function validate($value, $expectedType = null): ValidationResultInterfac
             return new ValidationResult(ValidationResult::STATUS_OK);
         }
 
+        if (is_array($value) && $expectedType !== InputType::ARRAY) {
+            return $this->validateMulti($value, $expectedType);
+        }
+
         switch ($expectedType) {
             case InputType::BOOLEAN:
                 if (!is_bool($value)) {
@@ -67,6 +71,11 @@ public function transformType($value, $expectedType = null): mixed
         if ($value === null || $expectedType === null) {
             return $value;
         }
+
+        if (is_array($value) && $expectedType !== InputType::ARRAY) {
+            return $this->transformMulti($value, $expectedType);
+        }
+
         switch ($expectedType) {
             case InputType::BOOLEAN:
                 if ($value === '1' || $value === 1 || $value === true || strtolower((string) $value) === 'true') {
@@ -100,4 +109,30 @@ public function transformType($value, $expectedType = null): mixed
         }
         return $value;
     }
+
+    /**
+     * @param mixed[] $value
+     */
+    private function validateMulti(array $value, string $expectedType): ValidationResultInterface
+    {
+        foreach ($value as $item) {
+            $result = $this->validate($item, $expectedType);
+            if ($result->isOk() === false) {
+                return $result;
+            }
+        }
+        return new ValidationResult(ValidationResult::STATUS_OK);
+    }
+
+    /**
+     * @param mixed[] $value
+     * @return mixed[]
+     */
+    private function transformMulti(array $value, string $expectedType): array
+    {
+        foreach ($value as $key => $item) {
+            $value[$key] = $this->transformType($item, $expectedType);
+        }
+        return $value;
+    }
 }