django之对FileField字段的upload_to的设定方法

# MyProject.settings.py 里面设置MEDIA_ROOT and MEDIA_URL

MEDIA_ROOT = os.path.join(BASE_DIR, 'upload/')
MEDIA_URL = '/upload/' #这个是在浏览器上访问该上传文件的url的前缀

# models.py

class User(models.Model):
 avatar = ImageField(upload_to = 'avatar/')
 #实际的路径就是 MEDIA_ROOT/avatar/filename
 #所以可以用uoload_to来指定文件存放的前缀路径

# models.py
class User(models.Model):
 avatar = ImageField(upload_to = 'avatar/%Y/%m/%d/')

# models.py

#让上传的文件路径动态地与user的名字有关
def upload_to(instance, fielname):
 return '/'.join([MEDIA_ROOT, instance.user_name, filename])

class User(models.Model):
 avatar = ImageField(upload_to = upload_to)
 user_name = CharField(max_length = 250)