加更改时提交空值不覆盖

Teachers/api/tea_api.py

@@ -15,6 +15,7 @@ def add_tea(tea: NewTeaRequest=Depends(),db=Depends(get_db)):
     if not r:
         raise HTTPException(status_code=500,detail='添加失败！')
     return TeaResponse(totals=1,data=tea.model_dump())
+
 @tea_api.get('/tea',response_model=TeaResponse,summary='查询老师',description='任意选择输入的信息数量，不输入则查询全部老师')
 def get_tea(t:TeaRequest=Depends(),db=Depends(get_db)):   #开启会话窗口
     r = get_tea_dao(t.model_dump(),db=db)
@@ -31,6 +32,7 @@ def delete_tea(id:int|None,db=Depends(get_db)):
 @tea_api.put('/tea/{id}', summary='更新老师信息', description='输入更改的信息，可以为空')
 def update_tea(id: int, tea: NewTeaRequest = Depends(), db=Depends(get_db)):
     t = tea.model_dump(exclude_unset=True)
+    print(t)
     r = update_tea_dao(id=id, t=t, db=db)
     if r == 'NOT_FOUND':
         raise HTTPException(status_code=404, detail='老师不存在')
@@ -38,6 +40,7 @@ def update_tea(id: int, tea: NewTeaRequest = Depends(), db=Depends(get_db)):
         raise HTTPException(status_code=400, detail='没有要更新的内容')
     if isinstance(r, str) and r.startswith('ERROR'):
         raise HTTPException(status_code=400, detail=r)
+        #先确认是字符串再调用字符串方法判断是不是以错误开头，是就报错给前端
     return {'detail': '更新成功'}
 
 #根据任意信息删除

Teachers/dao/tea_dao.py

@@ -14,7 +14,9 @@ def add_tea_dao(t,db):
         if existing:
             for key,value in t.items():
                 if hasattr(existing,key) and value is not None and value != '':
+                    #hasattr(existing,key)统计有没有key，返回值是True或False
                     setattr(existing,key,value)
+                    #将value的值赋值到existing的key中，配合循环，让所有输入的信息都覆盖原信息
             existing.is_delete = False
             db.commit()
             return '恢复修改成功'
@@ -37,7 +39,7 @@ def update_tea_dao(id, t, db):
         if not obj:
             return 'NOT_FOUND'
         for k, v in t.items():
-            if hasattr(obj, k):
+            if hasattr(obj, k) and v is not None and v != '':
                 setattr(obj, k, v)
         db.commit()
         return 'OK'