大更新

app/Http/Controllers/WarehouseController.php

@@ -72,9 +72,25 @@ class WarehouseController extends Controller
 
     public function destroy(Warehouse $warehouse)
     {
-        // 真實刪除
-        $warehouse->delete();
+        // 檢查是否有相關聯的採購單
+        if ($warehouse->purchaseOrders()->exists()) {
+            return redirect()->back()->with('error', '無法刪除：該倉庫有相關聯的採購單，請先處理採購單。');
+        }
 
-        return redirect()->back()->with('success', '倉庫已刪除');
+        \Illuminate\Support\Facades\DB::transaction(function () use ($warehouse) {
+            // 刪除庫存異動紀錄 (透過庫存關聯)
+            foreach ($warehouse->inventories as $inventory) {
+                // 刪除該庫存的所有異動紀錄
+                $inventory->transactions()->delete();
+            }
+            
+            // 刪除庫存項目
+            $warehouse->inventories()->delete();
+
+            // 刪除倉庫
+            $warehouse->delete();
+        });
+
+        return redirect()->back()->with('success', '倉庫及其庫存與紀錄已刪除');
     }
 }