修改菜品信息业务功能开发（查询回显和修改信息）

sky-server/src/main/java/com/sky/controller/admin/DishController.java

@@ -6,6 +6,7 @@ import com.sky.dto.DishPageQueryDTO;
 import com.sky.result.PageResult;
 import com.sky.result.Result;
 import com.sky.service.DishService;
+import com.sky.vo.DishVO;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
@@ -84,5 +85,30 @@ public class DishController {
     }
 
 
+    /**
+     * 根据id查询菜品和对应的口味数据
+     *
+     * @param id
+     * @return
+     */
+    @GetMapping("/{id}")
+    public Result<DishVO> getById(@PathVariable Long id){
+        log.info("根据id查询菜品信息：{}", id);
+        DishVO dishVO = dishService.getById(id);
+        return Result.success(dishVO);
+    }
+
+    /**
+     * 修改菜品
+     *
+     * @param dishDTO
+     * @return
+     */
+    @PutMapping
+    public Result update(@RequestBody DishDTO dishDTO){
+        log.info("修改菜品：{}", dishDTO);
+        dishService.updateWithFlavor(dishDTO);
+        return Result.success();
+    }
 
 }

sky-server/src/main/java/com/sky/mapper/DishFlavorMapper.java

@@ -4,6 +4,7 @@ package com.sky.mapper;
 import com.sky.entity.DishFlavor;
 import org.apache.ibatis.annotations.Delete;
 import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
 
 import java.util.List;
 
@@ -23,4 +24,12 @@ public interface DishFlavorMapper {
      */
     @Delete("delete from dish_flavor where dish_id=#{dishId}")
     void deleteByDishId(Long dishId);
+
+    /**
+     * 根据菜品id查询对应的口味数据
+     * @param dishId
+     * @return
+     */
+    @Select("select * from dish_flavor where dish_id = #{dishId}")
+    List<DishFlavor> getByDishId(Long dishId);
 }

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;
 
@@ -41,4 +42,19 @@ public interface DishService {
      * @param id
      */
     void startOrStop(Integer status, Long id);
+
+    /**
+     * 根据id查询菜品和对应的口味数据
+     *
+     * @param id
+     * @return
+     */
+    DishVO getById(Long id);
+
+    /**
+     * 根据id修改菜品基本信息和对应的口味信息
+     *
+     * @param dishDTO
+     */
+    void updateWithFlavor(DishDTO dishDTO);
 }

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

@@ -130,4 +130,53 @@ public class DishServiceImpl implements DishService {
 
         dishMapper.update(dish);
     }
+
+    /**
+     * 根据id查询菜品和对应的口味数据
+     *
+     * @param id
+     * @return
+     */
+    @Override
+    public DishVO getById(Long id) {
+        //根据id查询菜品数据
+        Dish dish =dishMapper.getById(id);
+
+        //根据菜品id查询口味数据
+        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
+
+        //将查询到的数据封装到VO
+        DishVO dishVO = new DishVO();
+        BeanUtils.copyProperties(dish,dishVO);
+        dishVO.setFlavors(dishFlavors);
+
+        return dishVO;
+    }
+
+    /**
+     * 根据id修改菜品基本信息和对应的口味信息
+     *
+     * @param dishDTO
+     */
+    @Override
+    public void updateWithFlavor(DishDTO dishDTO) {
+        Dish dish = new Dish();
+        BeanUtils.copyProperties(dishDTO,dish);
+
+        //修改菜品表基本信息
+        dishMapper.update(dish);
+
+        //删除原有的口味数据
+        dishFlavorMapper.deleteByDishId(dishDTO.getId());
+
+        //重新插入口味数据
+        List<DishFlavor> flavors = dishDTO.getFlavors();
+        if (flavors != null && flavors.size() > 0){
+            flavors.forEach(dishFlavor -> {
+                dishFlavor.setDishId(dishDTO.getId());
+            });
+
+            dishFlavorMapper.insertBatch(flavors);
+        }
+    }
 }

sky-server/src/main/resources/mapper/DishMapper.xml

@@ -44,9 +44,18 @@
     <update id="update">
         update dish
         <set>
-            <if test="status != null">
-                status=#{status},
+            <if test="name != null and name != ''">
+                name=#{name},
+            </if>
+            <if test="categoryId != null">
+                category_id = #{categoryId},
             </if>
+            <if test="price != null">price = #{price},</if>
+            <if test="image != null">image = #{image},</if>
+            <if test="description != null">description = #{description},</if>
+            <if test="status != null">status = #{status},</if>
+            <if test="updateTime != null">update_time = #{updateTime},</if>
+            <if test="updateUser != null">update_user = #{updateUser},</if>
         </set>
         where id=#{id}
     </update>