fix: reject unsupported database drivers in make:migration --session

system/Commands/Generators/MigrationGenerator.php

@@ -89,10 +89,28 @@ public function run(array $params)
         if (array_key_exists('session', $params) || CLI::getOption('session')) {
             $table     = $params['table'] ?? CLI::getOption('table') ?? 'ci_sessions';
             $params[0] = "_create_{$table}_table";
+
+            $group  = $params['dbgroup'] ?? CLI::getOption('dbgroup');
+            $group  = is_string($group) ? $group : 'default';
+            $driver = config(Database::class)->{$group}['DBDriver'] ?? null;
+
+            if ($driver === null) {
+                CLI::error(lang('CLI.generator.undefinedDatabaseGroup', [$group]));
+
+                return EXIT_ERROR;
+            }
+
+            if ($driver !== 'MySQLi' && $driver !== 'Postgre') {
+                CLI::error(lang('CLI.generator.unsupportedSessionDriver', [$group, $driver]));
+
+                return EXIT_ERROR;
+            }
         }
 
         $this->classNameLang = 'CLI.generator.className.migration';
         $this->generateClass($params);
+
+        return EXIT_SUCCESS;
     }
 
     /**

system/Language/en/CLI.php

@@ -33,17 +33,19 @@
             'transformer' => 'Transformer class name',
             'validation'  => 'Validation class name',
         ],
-        'commandType'      => 'Command type',
-        'databaseGroup'    => 'Database group',
-        'fileCreate'       => 'File created: {0}',
-        'fileError'        => 'Error while creating file: "{0}"',
-        'fileExist'        => 'File exists: "{0}"',
-        'fileOverwrite'    => 'File overwritten: "{0}"',
-        'parentClass'      => 'Parent class',
-        'returnType'       => 'Return type',
-        'tableName'        => 'Table name',
-        'usingCINamespace' => 'Warning: Using the "CodeIgniter" namespace will generate the file in the system directory.',
-        'viewName'         => [
+        'commandType'              => 'Command type',
+        'databaseGroup'            => 'Database group',
+        'fileCreate'               => 'File created: {0}',
+        'fileError'                => 'Error while creating file: "{0}"',
+        'fileExist'                => 'File exists: "{0}"',
+        'fileOverwrite'            => 'File overwritten: "{0}"',
+        'parentClass'              => 'Parent class',
+        'returnType'               => 'Return type',
+        'tableName'                => 'Table name',
+        'undefinedDatabaseGroup'   => 'The "{0}" database group is not defined.',
+        'unsupportedSessionDriver' => 'Database sessions are only supported on MySQLi and Postgre. The "{0}" database group uses the "{1}" driver.',
+        'usingCINamespace'         => 'Warning: Using the "CodeIgniter" namespace will generate the file in the system directory.',
+        'viewName'                 => [
             'cell' => 'Cell view name',
         ],
     ],

tests/system/Commands/Generators/MigrationGeneratorTest.php

@@ -13,8 +13,10 @@
 
 namespace CodeIgniter\Commands\Generators;
 
+use CodeIgniter\Config\Factories;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\StreamFilterTrait;
+use Config\Database;
 use PHPUnit\Framework\Attributes\Group;
 
 /**
@@ -27,6 +29,8 @@ final class MigrationGeneratorTest extends CIUnitTestCase
 
     protected function tearDown(): void
     {
+        Factories::reset('config');
+
         $result = str_replace(["\033[0;32m", "\033[0m", "\n"], '', $this->getStreamFilterBuffer());
         $file   = str_replace('APPPATH' . DIRECTORY_SEPARATOR, APPPATH, trim(substr($result, 14)));
         if (is_file($file)) {
@@ -52,6 +56,29 @@ public function testGenerateMigrationWithOptionTable(): void
         $this->assertStringContainsString('_CreateLoggerTable.php', $this->getStreamFilterBuffer());
     }
 
+    public function testSessionRejectsUnsupportedDriver(): void
+    {
+        $config                      = new Database();
+        $config->default['DBDriver'] = 'SQLite3';
+        Factories::injectMock('config', 'Database', $config);
+
+        command('make:migration -session');
+
+        $this->assertStringContainsString(
+            'Database sessions are only supported on MySQLi and Postgre. The "default" database group uses the "SQLite3" driver.',
+            $this->getStreamFilterBuffer(),
+        );
+        $this->assertSame([], glob(APPPATH . 'Database/Migrations/*_CreateCiSessionsTable.php'));
+    }
+
+    public function testSessionRejectsUndefinedGroup(): void
+    {
+        command('make:migration -session -dbgroup bogus');
+
+        $this->assertStringContainsString('The "bogus" database group is not defined.', $this->getStreamFilterBuffer());
+        $this->assertSame([], glob(APPPATH . 'Database/Migrations/*_CreateCiSessionsTable.php'));
+    }
+
     public function testGenerateMigrationWithOptionSuffix(): void
     {
         command('make:migration database -suffix');

user_guide_src/source/changelogs/v4.7.5.rst

@@ -18,6 +18,7 @@ BREAKING
 Message Changes
 ***************
 
+- Added the ``CLI.generator.undefinedDatabaseGroup`` and ``CLI.generator.unsupportedSessionDriver`` language strings.
 - Added the ``Cookie.invalidCookieValue`` language string.
 - Added the ``Cookie.invalidCookiePath`` language string.
 - Added the ``Cookie.invalidCookieDomain`` language string.
@@ -43,6 +44,7 @@ Bugs Fixed
   On Windows, where the ``readline`` extension is built on WinEditLine, the prompt is written to STDOUT first because WinEditLine reports no library version and prints ANSI sequences literally.
 - **CLIRequest:** Fixed a bug where ``parseCommand()`` could throw a TypeError when ``argv`` is missing.
 - **CodeIgniter:** Fixed a bug where ``gatherOutput()`` could be called twice when ``startController()`` returned a ``ResponseInterface`` (e.g., from filter attributes or closure routes).
+- **Commands:** Fixed a bug where ``make:migration --session`` silently generated a broken migration when the database group's driver is neither ``MySQLi`` nor ``Postgre``. The command now reports an error and returns ``EXIT_ERROR``.
 - **Content Security Policy:** Fixed a bug where empty ``Content-Security-Policy``, ``Content-Security-Policy-Report-Only``, and ``Reporting-Endpoints`` response headers were generated when no corresponding values existed.
 - **Cookie:** Fixed a bug where ``Cookie`` instances created with ``raw: true`` allowed invalid characters in cookie values rejected by ``setrawcookie()``.
 - **Cookie:** Fixed a bug where ``Cookie`` instances allowed invalid characters in path, domain, and prefix attributes rejected by ``setcookie()`` and ``setrawcookie()``.