Merge pull request #198 from inertiajs/add-error-bag-support

Add error bag support

Author: reinink

src/Middleware.php

@@ -147,8 +147,14 @@ public function resolveValidationErrors(Request $request)
             return (object) collect($bag->messages())->map(function ($errors) {
                 return $errors[0];
             })->toArray();
-        })->pipe(function ($bags) {
-            return $bags->has('default') ? $bags->get('default') : $bags->toArray();
+        })->pipe(function ($bags) use ($request) {
+            if ($bags->has('default') && $request->header('x-inertia-error-bag')) {
+                return [$request->header('x-inertia-error-bag') => $bags->get('default')];
+            } elseif ($bags->has('default')) {
+                return $bags->get('default');
+            } else {
+                return $bags->toArray();
+            }
         });
     }
 }

tests/MiddlewareTest.php

@@ -140,6 +140,24 @@ public function test_default_validation_errors_can_be_overwritten()
         ]);
     }
 
+    public function test_validation_errors_are_scoped_to_error_bag_header()
+    {
+        Session::put('errors', (new ViewErrorBag())->put('default', new MessageBag([
+            'name' => 'The name field is required.',
+            'email' => 'Not a valid email address.',
+        ])));
+
+        Route::middleware([StartSession::class, ExampleMiddleware::class])->get('/', function () {
+            $errors = Inertia::getShared('errors')();
+
+            $this->assertIsObject($errors);
+            $this->assertSame('The name field is required.', $errors->example->name);
+            $this->assertSame('Not a valid email address.', $errors->example->email);
+        });
+
+        $this->withoutExceptionHandling()->get('/', ['X-Inertia-Error-Bag' => 'example']);
+    }
+
     public function test_middleware_can_change_the_root_view_via_a_property()
     {
         $this->prepareMockEndpoint(null, [], new class extends Middleware {