Fix URL generation

src/Response.php

@@ -7,6 +7,7 @@
 use Illuminate\Http\Request;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Support\Facades\App;
+use Illuminate\Support\Str;
 use GuzzleHttp\Promise\PromiseInterface;
 use Illuminate\Support\Traits\Macroable;
 use Illuminate\Contracts\Support\Arrayable;
@@ -99,7 +100,7 @@ public function toResponse($request)
         $page = [
             'component' => $this->component,
             'props' => $props,
-            'url' => $request->getBaseUrl().$request->getRequestUri(),
+            'url' => Str::start(Str::after($request->fullUrl(), $request->getSchemeAndHttpHost()), '/'),
             'version' => $this->version,
         ];
 

tests/ResponseTest.php

@@ -361,4 +361,43 @@ public function test_responsable_with_invalid_key(): void
             $page['props']['resource']
         );
     }
+
+    public function test_the_page_url_is_prefixed_with_the_proxy_prefix(): void
+    {
+        if (version_compare(app()->version(), '7', '<')) {
+            $this->markTestSkipped('This test requires Laravel 7 or higher.');
+        }
+
+        Request::setTrustedProxies(['1.2.3.4'], Request::HEADER_X_FORWARDED_PREFIX);
+
+        $request = Request::create('/user/123', 'GET');
+        $request->server->set('REMOTE_ADDR', '1.2.3.4');
+        $request->headers->set('X_FORWARDED_PREFIX', '/sub/directory');
+
+        $user = ['name' => 'Jonathan'];
+        $response = new Response('User/Edit', ['user' => $user], 'app', '123');
+        $response = $response->toResponse($request);
+        $view = $response->getOriginalContent();
+        $page = $view->getData()['page'];
+
+        $this->assertInstanceOf(BaseResponse::class, $response);
+        $this->assertInstanceOf(View::class, $view);
+
+        $this->assertSame('/sub/directory/user/123', $page['url']);
+    }
+
+    public function test_the_page_url_doesnt_double_up(): void
+    {
+        $request = Request::create('/subpath/product/123', 'GET', [], [], [], [
+            'SCRIPT_FILENAME' => '/project/public/index.php',
+            'SCRIPT_NAME' => '/subpath/index.php',
+        ]);
+        $request->headers->add(['X-Inertia' => 'true']);
+
+        $response = new Response('Product/Show', []);
+        $response = $response->toResponse($request);
+        $page = $response->getData();
+
+        $this->assertSame('/subpath/product/123', $page->url);
+    }
 }