convert many to many to one to many

app/Http/Controllers/V3/Dashboard/Mission/TransportationUnitController.php

@@ -13,6 +13,7 @@ use App\Services\Cartables\Mission\TransportationUnitService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
+use Throwable;
 
 class TransportationUnitController extends Controller
 {
@@ -23,10 +24,12 @@ class TransportationUnitController extends Controller
         return response()->json($transportationUnitService->dataTable($request));
     }
 
+    /**
+     * @throws Throwable
+     */
     public function allocate(AllocateRequest $request, Mission $mission): JsonResponse
     {
         DB::transaction(function () use ($request, $mission) {
-            $mission->machines()->attach($request->machines);
             $mission->rahdaran()->attach($request->driver, ['is_driver' => true]);
 
             $mission->histories()->create([
@@ -36,19 +39,27 @@ class TransportationUnitController extends Controller
             ]);
 
             $state = MissionStates::PENDING_CONFIRMATION->value;
+            $machine = CMMSMachine::query()->find($request->machine_id);
+
             $mission->update([
                 'state_id' => $state,
                 'state_name' => MissionStates::name($state),
-                'km' => $request->km,
+                'machine_id' => $machine->id,
+                'machine_name' => $machine->car_name,
             ]);
         });
 
         return $this->successResponse();
     }
 
+    /**
+     * @throws Throwable
+     */
     public function deallocate(DeallocateRequest $request, Mission $mission): JsonResponse
     {
         DB::transaction(function () use ($request, $mission) {
+            $mission->rahdaran()->wherePivot('is_driver', '=',  true)->delete();
+
             $mission->histories()->create([
                 'user_id' => auth()->user()->id,
                 'previous_state_id' => $mission->state_id,
@@ -62,6 +73,8 @@ class TransportationUnitController extends Controller
                 'state_id' => $state,
                 'state_name' => MissionStates::name($state),
                 'description' => $request->description,
+                'machine_id' => null,
+                'machine_name' => null,
             ]);
         });
 
@@ -73,6 +86,7 @@ class TransportationUnitController extends Controller
         return $this->successResponse(
             CMMSMachine::query()
                 ->where('car_type', '=', $mission->car_type)
+                ->where('status', '<>', 3)
                 ->get(['machine_code', 'id', 'plak_number', 'car_name'])
         );
     }