增加乐器采购清单确认接口

mec-biz/src/main/java/com/ym/mec/biz/service/impl/ClassGroupServiceImpl.java

@@ -649,6 +649,11 @@ public class ClassGroupServiceImpl extends BaseServiceImpl<Integer, ClassGroup>
         //删除学员班级关联关系
         classGroupStudentMapperDao.deleteByClassId(classGroupId);
         studentRegistrationDao.deleteClassGroup(classGroupId);
+        //删除班级跟合奏班关系
+        ClassGroupRelation classGroupRelation = classGroupRelationDao.findClassGroupRelation(classGroupId);
+        if(classGroupRelation != null){
+            classGroupRelationDao.delete(classGroupRelation.getId());
+        }
         //删除班级
         classGroupDao.delete(classGroupId);
     }