Fix acceptance criteria toggle ajax responses

app/Http/Controllers/ProjectTicketController.php

@@ -12,6 +12,7 @@ use App\Http\Requests\StoreProjectTicketRequest;
 use App\Http\Requests\UpdateProjectTicketRequest;
 use App\Models\Project;
 use App\Models\Ticket;
+use Illuminate\Http\JsonResponse;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Arr;
@@ -85,7 +86,7 @@ class ProjectTicketController extends Controller
         UpdateProjectTicketRequest $request,
         Project $project,
         Ticket $ticket,
-    ): RedirectResponse {
+    ): RedirectResponse|JsonResponse {
 
         $user = $request->user();
         abort_unless(
@@ -105,6 +106,13 @@ class ProjectTicketController extends Controller
             ? "{$ticket->ticket_key} was updated."
             : 'No ticket changes were detected.';
 
+        if ($request->expectsJson()) {
+            return response()->json([
+                'message' => $statusMessage,
+                'updated' => $wasUpdated,
+            ]);
+        }
+
         return to_route('projects.tickets.show', [$project, $ticket])
             ->with('status', $statusMessage);
     }

resources/js/pages/projects/Ticket.vue

@@ -414,7 +414,7 @@ const persistAcceptanceCriteriaToggle = async (
                 method: 'PATCH',
                 credentials: 'same-origin',
                 headers: {
-                    Accept: 'text/html, application/xhtml+xml',
+                    Accept: 'application/json',
                     'Content-Type': 'application/json',
                     'X-CSRF-TOKEN': csrfToken ?? '',
                     'X-Requested-With': 'XMLHttpRequest',

tests/Feature/Projects/ProjectTicketControllerTest.php

@@ -661,6 +661,52 @@ class ProjectTicketControllerTest extends TestCase
         ]);
     }
 
+    public function test_ticket_update_returns_json_for_ajax_requests(): void
+    {
+        $editor = User::factory()->create();
+        $project = Project::factory()->create([
+            'key' => 'CORE',
+        ]);
+
+        app(InitializeProjectTicketMetadata::class)->handle($project);
+
+        $priority = $project->ticketPriorities()->firstOrFail();
+        $ticketType = $this->nonParentType($project);
+        $ticket = Ticket::factory()->create([
+            'project_id' => $project->id,
+            'sequence_number' => 1,
+            'ticket_key' => 'CORE-1',
+            'ticket_priority_id' => $priority->id,
+            'ticket_type_id' => $ticketType->id,
+            'title' => 'Acceptance criteria toggle test',
+        ]);
+
+        $this->syncProjectPermissions($project, $editor, ['write', 'view']);
+
+        $this->actingAs($editor)
+            ->withHeaders([
+                'Accept' => 'application/json',
+                'X-Requested-With' => 'XMLHttpRequest',
+            ])
+            ->patch(route('projects.tickets.update', [$project, $ticket]), [
+                'acceptance_criteria' => [],
+                'blocked_comment' => $ticket->blocked_comment,
+                'description' => $ticket->description,
+                'field_values' => [],
+                'is_blocked' => $ticket->is_blocked,
+                'parent_ticket_id' => $ticket->parent_ticket_id,
+                'story_points' => $ticket->story_points,
+                'ticket_priority_id' => $priority->id,
+                'ticket_type_id' => $ticketType->id,
+                'title' => $ticket->title,
+            ])
+            ->assertOk()
+            ->assertJson([
+                'message' => 'No ticket changes were detected.',
+                'updated' => false,
+            ]);
+    }
+
     /**
      * Ensure non-parent tickets cannot be assigned as a parent target.
      */