u

app/Http/Controllers/admin/ActivityReward.php

@@ -52,7 +52,7 @@ class ActivityReward extends Controller
                 'sub_title' => ['required', 'string', 'min:1', 'max:140'],
                 'start_time' => ['required', 'date', 'date_format:Y-m-d'],
                 'end_time' => ['required', 'date', 'date_format:Y-m-d'],
-                'detail_image' => [],
+                'detail_image' => ['required', 'url', 'regex:/\.(jpeg|jpg|png|webp)$/i'],
             ]);
             ActivityRewardService::submit($params);
             DB::commit();