archetecture security fix

app/Services/Administrator/AdministratorSharedService.php

@@ -4,9 +4,12 @@ namespace App\Services\Administrator;
 
 use App\Models\Configuration;
 use Carbon\Carbon;
+use Illuminate\Support\Facades\Schema;
 
 class AdministratorSharedService
 {
+    protected ?bool $teacherClassHasSemesterColumn = null;
+
     public function __construct(
         protected Configuration $configuration
     ) {
@@ -150,4 +153,13 @@ class AdministratorSharedService
 
         return count(array_unique($ids));
     }
+
+    public function teacherClassSupportsSemester(): bool
+    {
+        if ($this->teacherClassHasSemesterColumn !== null) {
+            return $this->teacherClassHasSemesterColumn;
+        }
+
+        return $this->teacherClassHasSemesterColumn = Schema::hasColumn('teacher_class', 'semester');
+    }
 }