利用django filefield上传的文件如何下载

点击之后出现：
方法库 with ID "methods/GB17930-2016车用汽油.pdf" doesn't exist. Perhaps it was deleted?

文件存放在项目的media/methods下面

https://www.jianshu.com/p/bb8bd494666b
请参考这个看看，希望可以帮到你