Merge pull request #383 from kenjis/fix-ValidationException-withErrors

fix: redirect()->withInput() causes ValidationException

Author: kenjis

src/Models/CheckQueryReturnTrait.php

@@ -32,7 +32,7 @@ private function checkQueryReturn($return): void
 
     private function checkValidationError(): void
     {
-        $validationErrors = $this->validation->getErrors();
+        $validationErrors = $this->getValidationErrors();
 
         if ($validationErrors !== []) {
             $message = 'Validation error:';
@@ -45,6 +45,27 @@ private function checkValidationError(): void
         }
     }
 
+    /**
+     * Gets real validation errors that are not saved in the Session.
+     *
+     * @return string[]
+     */
+    private function getValidationErrors(): array
+    {
+        // @TODO When CI v4.3 is released, you don't need this hack.
+        //       See https://github.com/codeigniter4/CodeIgniter4/pull/6384
+        return $this->getValidationPropertyErrors();
+    }
+
+    private function getValidationPropertyErrors(): array
+    {
+        $refClass    = new ReflectionObject($this->validation);
+        $refProperty = $refClass->getProperty('errors');
+        $refProperty->setAccessible(true);
+
+        return $refProperty->getValue($this->validation);
+    }
+
     private function disableDBDebug(): void
     {
         if (! $this->db->DBDebug) {