苍穹外卖--菜品管理-修改功能实现

sky-server/src/main/java/com/sky/service/DishService.java

@@ -3,6 +3,7 @@ package com.sky.service;
 import com.sky.dto.DishDTO;
 import com.sky.dto.DishPageQueryDTO;
 import com.sky.result.PageResult;
+import com.sky.vo.DishVO;
 
 import java.util.List;
 
@@ -24,4 +25,17 @@ public interface DishService {
      * @param ids
      */
     void deleteBath(List<Long> ids);
+
+    /**
+     * 根据id查询菜品
+     * @param id
+     * @return
+     */
+    DishVO getByIdWithFlavor(Long id);
+
+    /**
+     * 修改菜品
+     * @param dishDTO
+     */
+    void updateWithFlavor(DishDTO dishDTO);
 }

sky-server/src/main/java/com/sky/service/impl/DishServiceImpl.java

@@ -20,6 +20,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.Arrays;
 import java.util.List;
 
 @Service
@@ -97,4 +98,44 @@ public class DishServiceImpl implements DishService {
         dishMapper.deleteBath(ids);
         dishFlavorMapper.deleteBath(ids);
     }
+
+    /**
+     * 根据id查询菜品
+     * @param id
+     * @return
+     */
+    @Override
+    public DishVO getByIdWithFlavor(Long id) {
+        //1.查询2张表：菜品表和口味表
+        Dish dish = dishMapper.getById(id);
+
+        List<DishFlavor> flavors = dishFlavorMapper.getByDishId(id);
+        //对象属性拷贝
+        DishVO dishVO = new DishVO();
+        BeanUtils.copyProperties(dish,dishVO);
+        dishVO.setFlavors(flavors);
+        return dishVO;
+    }
+
+    /**
+     * 修改菜品
+     * @param dishDTO
+     */
+    @Override
+    public void updateWithFlavor(DishDTO dishDTO) {
+        //1.修改的表：Dish Dish_flavor
+        Dish dish = new Dish();
+        BeanUtils.copyProperties(dishDTO,dish);
+        //2.修改菜品表
+        dishMapper.update(dish);
+        //3.修改口味表：先执行删除对应菜品的全部口味，再重新插入
+        dishFlavorMapper.deleteBath(Arrays.asList(dishDTO.getId()));
+        List<DishFlavor> flavors = dishDTO.getFlavors();
+        //确保口味的菜品id必须有
+        flavors.forEach(dishFlavor -> dishFlavor.setDishId(dishDTO.getId()));
+        if (flavors != null && flavors.size() > 0) {
+            dishFlavorMapper.insertBath(flavors);
+        }
+
+    }
 }