Discover migrations from all namespaces when none is configured

Author: paulbalandan

docs/type-inference.md

@@ -190,3 +190,16 @@ This extension types the virtual properties of `CodeIgniter\Entity\Entity` subcl
 layers the entity's `$dates` and `$casts` (resolving custom `$castHandlers` by reflecting their `get()` method)
 over the type of the backing database column. That column is found through the table of the model whose
 `$returnType` is the entity. Properties that are neither a date, a cast, nor a known column resolve to `mixed`.
+
+> [!NOTE]
+> **Configuration:**
+>
+> The Model and Entity column types are derived from a live schema, built by running your migrations against a
+> throwaway SQLite database (this requires the `sqlite3` PHP extension). By default every registered namespace
+> is scanned (your app plus installed packages). To restrict the schema to a single namespace, set:
+>
+> ```yml
+> parameters:
+>   codeigniter:
+>     schemaNamespace: Acme\Blog
+> ```

src/Database/SchemaMigrator.php

@@ -89,9 +89,9 @@ private function discoverMigrations(Connection $db, ?string $namespace): array
     {
         $runner = new MigrationRunner(config(Migrations::class), $db);
 
-        if ($namespace !== null) {
-            $runner->setNamespace($namespace);
-        }
+        // A null namespace makes the runner scan every registered namespace (the app plus installed
+        // packages), so a library analyzed on its own and an app's vendor migrations are both found.
+        $runner->setNamespace($namespace);
 
         return array_values(array_filter(
             $runner->findMigrations(),

tests/Database/SchemaMigratorTest.php

@@ -71,4 +71,17 @@ public function testRunsMigrationsResilientlyAndReturnsFingerprint(): void
         // A migration pinned to another database group is skipped.
         self::assertNull($schema->getTable('blog_groups'));
     }
+
+    public function testNullNamespaceScansEveryRegisteredNamespace(): void
+    {
+        $migrator    = new SchemaMigrator();
+        $fingerprint = $migrator->fingerprint($this->db, null);
+        $migrator->migrate($this->db, null);
+
+        $schema = (new SchemaIntrospector())->introspect($this->db, $fingerprint);
+
+        // The fixture migrations live outside the app namespace, so finding them proves a null
+        // namespace scans all registered namespaces rather than only `App\Database\Migrations`.
+        self::assertNotNull($schema->getTable('blog_users'));
+    }
 }