django实现文件（图片）上传之后自动修改名称以及页面上传图片时的各种提醒：
1、先在你项目中添加一个文件夹如：system 在文件夹下添加__init__.py 和storage.py文件,并在storage.py中添加如下代码：
# -*- coding:utf-8 -*-from django.core.files.storage import FileSystemStoragefrom django.http import HttpResponseclass ImageStorage(FileSystemStorage): ???from django.conf import settings ???def __init__(self,location=settings.MEDIA_ROOT, base_url=settings.MEDIA_URL): ???????#初始化 ???????super(ImageStorage,self).__init__(location,base_url) ???def _save(self,name,content): ???????#重新文件上传 ???????import os,time,hashlib ???????????????#获取文件后缀 ???????ext = os.path.splitext(name)[1] ???????#文件目录 ???????d = os.path.dirname(name) ???????#定义文件夹名称 ???????fn = hashlib.md5(time.strftime(‘%Y%m%d%H%M%S‘).encode(‘utf-8‘)).hexdigest() ???????name = os.path.join(d,fn+ext) ???????#调用父类方法 ???????return super(ImageStorage,self)._save(name,content) ???????
2、在models.py文件中添加如下代码：
from django.db import modelsfrom datetime import datetimefrom system.stroage import ImageStorage# Create your models here.#文章咨询表class Article(models.Model): ???title = models.CharField(max_length=250, null=False, verbose_name=‘标题‘, unique=True) ???content = models.TextField(verbose_name=‘内容‘) ???add_time = models.DateTimeField(verbose_name=‘添加时间‘, default=datetime.now) ???update_time = models.DateTimeField(verbose_name=‘修改时间‘, null=True) ???state = models.IntegerField(verbose_name=‘状态‘, default=1) ???cat_id = models.ForeignKey(Category, on_delete=models.CASCADE) ???t = datetime.now() ???cover_map = models.ImageField(verbose_name=‘缩列图‘,upload_to=‘article/%Y/%m/%d‘,default=‘1.png‘,storage=ImageStorage()) ???class Meta: ???????verbose_name = ‘文章‘ ???????ordering = [‘-add_time‘] ???def __str__(self): ???????return self.title ???def delete(self, using=None, keep_parents=False): ???????print(1111)
django上传图片简单验证以及自动修改图片名称
原文地址：https://www.cnblogs.com/sunshenggang/p/9572856.html