fix: Casting in insertBatch and updateBatch methods.

system/BaseModel.php

@@ -909,6 +909,19 @@ public function insertBatch(?array $set = null, ?bool $escape = null, int $batch
 
         if (is_array($set)) {
             foreach ($set as &$row) {
+                // If casts are used, convert the data first
+                if ($this->useCasts()) {
+                    if (is_array($row)) {
+                        $row = $this->converter->toDataSource($row);
+                    } elseif ($row instanceof stdClass) {
+                        $row = (array) $row;
+                        $row = $this->converter->toDataSource($row);
+                    } elseif ($row instanceof Entity) {
+                        $row = $this->converter->extract($row);
+                    } elseif (is_object($row)) {
+                        $row = $this->converter->extract($row);
+                    }
+                }
                 // If $row is using a custom class with public or protected
                 // properties representing the collection elements, we need to grab
                 // them as an array.
@@ -1051,6 +1064,19 @@ public function updateBatch(?array $set = null, ?string $index = null, int $batc
     {
         if (is_array($set)) {
             foreach ($set as &$row) {
+                // If casts are used, convert the data first
+                if ($this->useCasts()) {
+                    if (is_array($row)) {
+                        $row = $this->converter->toDataSource($row);
+                    } elseif ($row instanceof stdClass) {
+                        $row = (array) $row;
+                        $row = $this->converter->toDataSource($row);
+                    } elseif ($row instanceof Entity) {
+                        $row = $this->converter->extract($row);
+                    } elseif (is_object($row)) {
+                        $row = $this->converter->extract($row);
+                    }
+                }
                 // If $row is using a custom class with public or protected
                 // properties representing the collection elements, we need to grab
                 // them as an array.

tests/system/Models/InsertModelTest.php

@@ -1,3 +1,3 @@
 <?php
 
 declare(strict_types=1);
@@ -22,6 +22,7 @@
 use stdClass;
 use Tests\Support\Entity\User;
 use Tests\Support\Models\JobModel;
+use Tests\Support\Models\UserCastsTimestampModel;
 use Tests\Support\Models\UserModel;
 use Tests\Support\Models\UserObjModel;
 use Tests\Support\Models\WithoutAutoIncrementModel;
@@ -376,4 +377,55 @@
         $id = $this->model->getInsertID();
         $this->assertSame($entity->country, $this->model->find($id)->country);
     }
+
+    public function testInsertBatchWithCasts(): void
+    {
+        $userData = [
+            [
+                'name' => 'Smriti',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]'
+                ],
+                'country' => 'India',
+            ],
+            [
+                'name' => 'Rahul',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]'
+                ],
+                'country' => 'India',
+            ]
+        ];
+        $this->createModel(UserCastsTimestampModel::class);
+
+        $numRows = $this->model->insertBatch($userData);
+
+        $this->assertSame(2, $numRows);
+
+        $rows = $this->model->where('country', 'India')->findAll();
+
+        $this->assertNotEmpty($rows);
+        $this->assertCount(2, $rows);
+
+        $smriti = $rows[0];
+        $rahul = $rows[1];
+
+        $this->assertNotNull($smriti);
+        $this->assertNotNull($rahul);
+
+        // Check Smriti
+        $this->assertSame('Smriti', $smriti['name']);
+        $this->assertIsArray($smriti['email']);
+        $this->assertSame('[email protected]', $smriti['email']['personal']);
+        $this->assertSame('[email protected]', $smriti['email']['work']);
+
+        // Check Rahul
+        $this->assertSame('Rahul', $rahul['name']);
+        $this->assertIsArray($rahul['email']);
+        $this->assertSame('[email protected]', $rahul['email']['personal']);
+        $this->assertSame('[email protected]', $rahul['email']['work']);
+    }
+
 }

tests/system/Models/UpdateModelTest.php

@@ -26,6 +26,7 @@
 use Tests\Support\Models\EventModel;
 use Tests\Support\Models\JobModel;
 use Tests\Support\Models\SecondaryModel;
+use Tests\Support\Models\UserCastsTimestampModel;
 use Tests\Support\Models\UserModel;
 use Tests\Support\Models\UserTimestampModel;
 use Tests\Support\Models\UUIDPkeyModel;
@@ -602,4 +603,86 @@ public function testUpdateEntityUpdateOnlyChangedFalse(): void
         $this->assertTrue($result);
         $this->assertNotSame($updateAtBefore, $updateAtAfter);
     }
+
+    public function testUpdateBatchWithCasts(): void
+    {
+        $this->createModel(UserCastsTimestampModel::class);
+
+        // Step 1: Insert initial users
+        $initialData = [
+            [
+                'name' => 'Smriti',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]',
+                ],
+                'country' => 'India',
+            ],
+            [
+                'name' => 'Rahul',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]',
+                ],
+                'country' => 'India',
+            ],
+        ];
+
+        $this->model->insertBatch($initialData);
+
+        $rows = $this->model->where('country', 'India')->findAll();
+
+        $this->assertNotEmpty($rows);
+        $this->assertCount(2, $rows);
+
+        $smriti = $rows[0];
+        $rahul = $rows[1];
+
+        $this->assertNotNull($smriti);
+        $this->assertNotNull($rahul);
+
+        // Step 3: Prepare update data (must include 'id' key)
+        $updateData = [
+            [
+                'id' => $smriti['id'],
+                'name' => 'Smriti Updated',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]',
+                ],
+            ],
+            [
+                'id' => $rahul['id'],
+                'name' => 'Rahul Updated',
+                'email' => [
+                    'personal' => '[email protected]',
+                    'work' => '[email protected]',
+                ],
+            ],
+        ];
+
+        // Step 4: Perform batch update
+        $numRows = $this->model->updateBatch($updateData, 'id');
+        $this->assertSame(2, $numRows);
+
+        $rows = $this->model->where('country', 'India')->findAll();
+
+        $this->assertNotEmpty($rows);
+        $this->assertCount(2, $rows);
+
+        $smritiUpdated = $rows[0];
+        $rahulUpdated = $rows[1];
+
+        // Smriti assertions
+        $this->assertSame('Smriti Updated', $smritiUpdated['name']);
+        $this->assertIsArray($smritiUpdated['email']);
+        $this->assertSame('[email protected]', $smritiUpdated['email']['personal']);
+        $this->assertSame('[email protected]', $smritiUpdated['email']['work']);
+
+        // Rahul assertions
+        $this->assertSame('Rahul Updated', $rahulUpdated['name']);
+        $this->assertIsArray($rahulUpdated['email']);
+        $this->assertSame('[email protected]', $rahulUpdated['email']['personal']);
+        $this->assertSame('[email protected]', $rahulUpdated['email']['work']);
+    }
 }

user_guide_src/source/changelogs/v4.6.4.rst

@@ -34,6 +34,7 @@ Bugs Fixed
 - **Database:** Fixed a bug in ``Connection::getFieldData()`` for ``SQLSRV`` and ``OCI8`` where extra characters were returned in column default values (specific to those handlers), instead of following the convention used by other drivers.
 - **Forge:** Fixed a bug in ``Postgre`` and ``SQLSRV`` where changing a column's default value using ``Forge::modifyColumn()`` method produced incorrect SQL syntax.
 - **Model:** Fixed a bug in ``Model::replace()`` where ``created_at`` field (when available) wasn't set correctly.
+- **Model:** Fixed a bug in ``Model::insertBatch()`` and ``Model::updateBatch()`` where casts were not applied to inserted or updated values.
 
 See the repo's
 `CHANGELOG.md <https://github.com/codeigniter4/CodeIgniter4/blob/develop/CHANGELOG.md>`_