Add support for nested tenant config override (#920)

* feat: add support for nested tenant config override

* test: ensure nested tenant values are mapped

src/Features/TenantConfig.php

@@ -6,6 +6,7 @@ namespace Stancl\Tenancy\Features;
 
 use Illuminate\Contracts\Config\Repository;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\Event;
 use Stancl\Tenancy\Contracts\Feature;
 use Stancl\Tenancy\Contracts\Tenant;
@@ -45,7 +46,7 @@ class TenantConfig implements Feature
     {
         /** @var Tenant|Model $tenant */
         foreach (static::$storageToConfigMap as $storageKey => $configKey) {
-            $override = $tenant->getAttribute($storageKey);
+            $override = Arr::get($tenant, $storageKey);
 
             if (! is_null($override)) {
                 if (is_array($configKey)) {

tests/Features/TenantConfigTest.php

@@ -22,6 +22,30 @@ class TenantConfigTest extends TestCase
         parent::tearDown();
     }
 
+    /** @test */
+    public function nested_tenant_values_are_merged()
+    {
+        $this->assertSame(null, config('whitelabel.theme'));
+        config([
+            'tenancy.features' => [TenantConfig::class],
+            'tenancy.bootstrappers' => [],
+        ]);
+        Event::listen(TenancyInitialized::class, BootstrapTenancy::class);
+        Event::listen(TenancyEnded::class, RevertToCentralContext::class);
+
+        TenantConfig::$storageToConfigMap =  [
+            'whitelabel.config.theme' => 'whitelabel.theme',
+        ];
+
+        $tenant = Tenant::create([
+            'whitelabel' => ['config' => ['theme' => 'dark']],
+        ]);
+
+        tenancy()->initialize($tenant);
+        $this->assertSame('dark', config('whitelabel.theme'));
+        tenancy()->end();
+    }
+
     /** @test */
     public function config_is_merged_and_removed()
     {