managing

backend/src/main/java/com/example/todoapp/controller/ToBuysController.java

@@ -13,6 +13,7 @@ import com.example.todoapp.dto.ToBuysDTO;
 import com.example.todoapp.model.ToBuys;
 import com.example.todoapp.model.User;
 import com.example.todoapp.repository.UserRepository;
+import com.example.todoapp.repository.StuffsRepository;
 import com.example.todoapp.service.ToBuysService;
 import jakarta.validation.Valid;
 
@@ -44,6 +45,9 @@ public class ToBuysController {
     @Autowired
     private UserRepository userRepository;
 
+    @Autowired
+    private StuffsRepository stuffsRepository;
+
     /**
      * 新しい購入アイテムを追加する
      *
@@ -92,8 +96,8 @@ public class ToBuysController {
                 .map(toBuy -> {
                 ToBuyResponse resp = new ToBuyResponse();
                 resp.setTobuy_id(toBuy.getTobuy_id());
-                resp.setStuff_id(toBuy.getStuffs().getStuff_id());
-                resp.setStuff_name(toBuy.getStuffs().getStuff_name());  
+                resp.setStuff_id(toBuy.getStuff_id());
+                resp.setStuff_name(stuffsRepository.findByStuff_id(toBuy.getStuff_id()).getStuff_name());
                 resp.setAmount(toBuy.getAmount());
                 resp.setShop(toBuy.getStore());
                 return resp;

backend/src/main/java/com/example/todoapp/dto/ToBuyResponse.java

@@ -5,7 +5,7 @@ import lombok.Data;
 @Data
 public class ToBuyResponse {
     private int tobuy_id;
-    private Long stuff_id;
+    private int stuff_id;
     private String stuff_name;
     private int amount;
     private String shop;

backend/src/main/java/com/example/todoapp/dto/ToBuysDTO.java

@@ -14,7 +14,7 @@ import lombok.Data;
 @Data
 public class ToBuysDTO {
    private int tobuy_id;
-   private Long stuff_id;
+   private Integer stuff_id;
    private Long user_id;
    private int price;
    private int amount;

backend/src/main/java/com/example/todoapp/model/Stocks.java

@@ -52,7 +52,7 @@ public class Stocks {
          referencedColumnName = "stuff_id",
          nullable = false
      )
-     private Long stuff_id;
+     private int stuff_id;
 
 
     /**

backend/src/main/java/com/example/todoapp/model/Stuffs.java

@@ -35,7 +35,7 @@ import lombok.NoArgsConstructor;
      */
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
-    private Long stuff_id ;
+    private int stuff_id ;
 
     /**
     * カテゴリ名

backend/src/main/java/com/example/todoapp/model/ToBuys.java

@@ -48,7 +48,7 @@ public class ToBuys {
         referencedColumnName = "stuff_id", 
         nullable = false                
     )
-    private Stuffs stuffs;   
+    private int stuff_id;   
 
     /**
      * ユーザーテーブル参照用の外部キー

backend/src/main/java/com/example/todoapp/repository/StuffsRepository.java

@@ -9,6 +9,8 @@
 package com.example.todoapp.repository;
 
 import com.example.todoapp.model.Stuffs;
+
+
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
@@ -22,4 +24,6 @@ import org.springframework.stereotype.Repository;
 @Repository
 public interface StuffsRepository extends JpaRepository<Stuffs, Long> {
     // 材料情報を主キーで取得するメソッド（必要に応じて追加）
+    Stuffs findByStuff_id(int stuff_id);
+
 }

backend/src/main/java/com/example/todoapp/service/ToBuysService.java

@@ -78,7 +78,8 @@ public class ToBuysService {
             stuffs = stuffsRepository.save(stuffs); 
         } else {
             // 材料情報を取得
-            Optional<Stuffs> optionalStuffs = stuffsRepository.findById(toBuyDTO.getStuff_id());
+            int stuff_id = toBuyDTO.getStuff_id();
+            Optional<Stuffs> optionalStuffs = stuffsRepository.findById(stuff_id);
             if (!optionalStuffs.isPresent()) {
                 throw new RuntimeException("材料がありません");
             }