django admin删除记录的同时删除文件

参考简书文章Python Django 调用post_delete() 做自定义删除

import os

from django.db import models
from django.db.models.signals import post_delete
from django.dispatch import receiver
from django.conf import settings


...

class Media_blog(models.Model):
    title = models.CharField(max_length=50)
    pub_date = models.DateField()
    content = models.TextField()
    source = models.CharField(max_length=300)
    source_description = models.CharField(max_length=50,
                                          null=True,
                                          blank=True)
    photo = models.ImageField(null=True,
                              blank=True,
                              upload_to='image',
                              max_length=200)

    class Meta:
        ordering = ('title',)

    def __str__(self):
        return self.title

## 添加监听器
@receiver(post_delete, sender=Media_blog)
def delete_upload_files(sender, instance, **kwargs):
    files = getattr(instance, 'photo')
    if not files:
        return
    fname = os.path.join(settings.MEDIA_ROOT, str(files))
    if os.path.isfile(fname):
        os.remove(fname)

来源：CSDN

作者：uxk0587

链接：https://blog.csdn.net/weixin_41660414/article/details/104114415