Block staff id from register

app/Http/Controllers/AuthMobile/AuthController.php

@@ -7,6 +7,7 @@ use Carbon\Carbon;
 use App\Models\User;
 use App\Models\File;
 use App\Http\Controllers\Controller;
+use App\Models\Staff;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Hash;
 use Illuminate\Support\Facades\Validator;
@@ -25,8 +26,6 @@ class AuthController extends Controller
             'register_agree' => 'required|integer',
             'alamat' => 'required'
         ]);
-        
-        
 
         if ($validator->fails()) {
             $errors = [
@@ -37,6 +36,18 @@ class AuthController extends Controller
         }
         // Retrieve the validated input...
         $fields = $validator->validated();
+
+        $convert_ic_to_hyphen = (substr_replace(substr_replace($fields['nokp'], '-', 6, 0), '-', 9, 0));
+        $check_staff = Staff::where('nokp', '=', $convert_ic_to_hyphen)->first();
+        if($check_staff)
+        {
+            $errors = [
+                'success' => "Staff",
+                'message' => "Staff tidak dibenarkan mendaftar."
+            ];
+            return response($errors, 201);
+
+        }
         
         
         $currentdate = Carbon::now();