现有行更新或使用Django模型插入新行

Question

I have a table where i am checking if any row exists, if yes then update some fields of that table and if no, then particular row is inserted with all the values of the specified fields using django models..

So basically what i have done is.. First i check if the values doesn't exist, then i add those values using create method.. After that i read the table again and then check whether to update particular field or not after all this i send a jsonresponse..

So when i request first time it adds all the rows required along with the existing one and gives an value error saying httpresponse error returned none and again if i request same url i get the values with updated fields too based on the inserted rows as well!

So is their a way to make it work as if the row doesn't exist then insert or else update specific field?

Answer 1

按照您的逻辑进行两步处理：1.检查记录是否存在：是：更新编号：创建新记录