fix: store properly registartions to course_user

app/Http/Controllers/CourseRegistration/AdminCourseRegistrationController.php

@@ -9,6 +9,7 @@
 use App\Http\Resources\CourseRegistration\CourseRegistrationResource;
 use App\Models\CourseRegistration;
 use App\Services\CourseRegistrationService;
+use Illuminate\Http\JsonResponse;
 
 class AdminCourseRegistrationController extends Controller
 {
@@ -19,9 +20,10 @@ public function index(): CourseRegistrationCollection
         return new CourseRegistrationCollection($this->courseRegistrationService->index());
     }
 
-    public function store(StoreCourseRegistrationRequest $request): CourseRegistrationResource
+    public function store(StoreCourseRegistrationRequest $request): JsonResponse
     {
-        return new CourseRegistrationResource($this->courseRegistrationService->store($request->getRegistration()));
+        $this->courseRegistrationService->store($request->getRegistration());
+        return response()->json(['message' => 'Użytkownik został zapisany na kurs!'], 201);
     }
     //
     //    public function update(UpdateCourseRegistrationRequest $request, CourseRegistration $courseRegistration): CourseRegistrationResource

app/Models/Course.php

@@ -46,7 +46,7 @@ public function category(): BelongsTo
 
     public function users(): BelongsToMany
     {
-        return $this->belongsToMany(User::class, 'course_user');
+        return $this->belongsToMany(User::class, 'course_user')->withTimestamps();
     }
 
     public function registrations(): hasMany

app/Models/User.php

@@ -65,6 +65,10 @@ public function creditCard(): HasOne
 
     public function courses(): BelongsToMany
     {
-        return $this->belongsToMany(Course::class, 'course_user');
+        return $this->belongsToMany(Course::class, 'course_user')->withTimestamps();
+    }
+    public function isRegisteredToCourse($courseId): bool
+    {
+        return $this->courses()->where('course_id', $courseId)->exists();
     }
 }

app/Services/CourseRegistrationService.php

@@ -3,6 +3,7 @@
 namespace App\Services;
 
 use App\Models\CourseRegistration;
+use App\Models\User;
 use App\ValueObjects\CreateCourseRegistration;
 use Illuminate\Support\Collection;
 
@@ -13,17 +14,17 @@ public function index(): Collection
         return CourseRegistration::all();
     }
 
-    public function store(CreateCourseRegistration $data): CourseRegistration
+    public function store(CreateCourseRegistration $data): void
     {
-        $existing = CourseRegistration::where([
-            'user_id' => $data->user_id,
-            'course_id' => $data->course_id,
-        ])->first();
+        $user = User::find($data->getUserId());
+        $courseId = $data->getCourseId();
 
-        if ($existing) {
+        if ($user->isRegisteredToCourse($courseId)) {
             throw new \Exception('Użytkownik jest już zapisany na ten kurs.');
         }
 
-        return CourseRegistration::create($data->toArray());
+        $user->courses()->attach($courseId);
     }
+
+
 }

app/ValueObjects/CreateCourseRegistration.php

@@ -6,16 +6,16 @@
 
 final readonly class CreateCourseRegistration implements Arrayable
 {
-    public function __construct(private int $courseId, private int $userId) {}
+    public function __construct(private int $course_id, private int $user_id) {}
 
     public function getCourseId(): int
     {
-        return $this->courseId;
+        return $this->course_id;
     }
 
     public function getUserId(): int
     {
-        return $this->userId;
+        return $this->user_id;
     }
 
     public function toArray(): array