我使用的是s3boto后端，而不是s3后端。
在django-storages docs中，它表示要指定您的AWS_HEADERS变量 settings.py文件：
AWS_HEADERS（可选）
如果您要设置随存储的每个文件发送的标头：
# see http://developer.yahoo.com/performance/rules.html#expires
AWS_HEADERS = {
'Expires': 'Thu, 15 Apr 2010 20:00:00 GMT',
'Cache-Control': 'max-age=86400',
}
这对我不起作用。
这是我的模特：
class Photo(models.Model):
"""
docstring for Photo
represents a single photo.. a photo can have many things associated to it like
a project, a portfolio, etc...
"""
def image_upload_to(instance, filename):
today = datetime.datetime.today()
return 'user_uploads/%s/%s/%s/%s/%s/%s/original/%s' % (instance.owner.username, today.year, today.month, today.day, today.hour, today.minute, filename)
def thumb_upload_to(instance, filename):
today = datetime.datetime.today()
return 'user_uploads/%s/%s/%s/%s/%s/%s/thumb/%s' % (instance.owner.username, today.year, today.month, today.day, today.hour, today.minute, filename)
def medium_upload_to(instance, filename):
today = datetime.datetime.today()
return 'user_uploads/%s/%s/%s/%s/%s/%s/medium/%s' % (instance.owner.username, today.year, today.month, today.day, today.hour, today.minute, filename)
owner = models.ForeignKey(User)
# take out soon
projects = models.ManyToManyField('Project', through='Connection', blank=True)
image = models.ImageField(upload_to=image_upload_to)
thumb = ThumbnailerImageField(upload_to=thumb_upload_to, resize_source=dict(size=(102,102), crop='center'),)
medium = ThumbnailerImageField(upload_to=medium_upload_to, resize_source=dict(size=(700,525),))
title = models.CharField(blank=True, max_length=300)
caption = models.TextField(blank=True)
can_view_full_res = models.BooleanField(default=False)
is_portfolio = models.BooleanField(default=False)
created_time = models.DateTimeField(blank=False, auto_now_add=True)
disabled = models.DateTimeField(blank=True, null=True, auto_now_add=False)
cost = models.FloatField(default=0)
rating = models.IntegerField(default=0)
mature_content = models.BooleanField(default=False)
objects = ViewableManager()
def get_absolute_url(self):
return "/m/photo/%i/" % self.pk
def get_prev_by_time(self):
get_prev = Photo.objects.order_by('-created_time').filter(created_time__lt=self.created_time)
try:
return get_prev[0]
except IndexError:
return None
def get_next_by_time(self):
get_next = Photo.objects.order_by('created_time').filter(created_time__gt=self.created_time)
try:
return get_next[0]
except IndexError:
return None
def __unicode__(self):
return(self.title)
这就是我的模板上我有图像的内容......
<img class='shadow' src='{{ object.medium.url }}'>
以下是请求和响应标头：
Request URL:https://MY_UPLOAD_CONTAINER.s3.amazonaws.com/user_uploads/travismillward/2012/3/23/3/0/medium/_0677866898.jpg?Signature=s%2ByKsWDxrDJbyeVHd%2BDS3JlByts%3D&Expires=1332529522&AWSAccessKeyId=MY_ACCESS_KEYID
Request Method:GET
Status Code:200 OK
Request Headersview parsed
GET /user_uploads/travismillward/2012/3/23/3/0/medium/_0677866898.jpg?Signature=s%2ByKsWDxrDJbyeVHd%2BDS3JlByts%3D&Expires=1332529522&AWSAccessKeyId=MY_ACCESS_KEYID HTTP/1.1
Host: MY_UPLOAD_CONTAINER.s3.amazonaws.com
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.83 Safari/535.11
Accept: */*
Referer: http://localhost:8000/m/photo/1/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Query String Parametersview URL encoded
Signature:s+yKsWDxrDJbyeVHd+DS3JlByts=
Expires:1332529522
AWSAccessKeyId:MY_ACCESS_KEYID
Response Headersview parsed
HTTP/1.1 200 OK
x-amz-id-2: wOWRRDi5TItAdiYSPf8X4z4I4v5/Zu8XLhwlxmZa8w8w1Jph8WQkenihVJI/ZKnV
x-amz-request-id: THE_X_AMZ_REQUEST_ID
Date: Fri, 23 Mar 2012 18:05:24 GMT
Cache-Control: max-age=86400
Last-Modified: Fri, 23 Mar 2012 09:00:13 GMT
ETag: "6e34e718a349e0bf9e4aefc1afad3d7d"
Accept-Ranges: bytes
Content-Type: image/jpeg
Content-Length: 91600
Server: AmazonS3
当我将图像的路径粘贴到地址栏时，它会缓存图像并给我一个304 ...以下是请求和响应标题：
Request URL:https://MY_UPLOAD_CONTAINER.s3.amazonaws.com/user_uploads/travismillward/2012/3/23/3/0/medium/_0677866898.jpg?Signature=evsDZiw3QGsjPacG4CHn6Ji2dDA%3D&Expires=1332528782&AWSAccessKeyId=MY_ACCESS_KEYID
Request Method:GET
Status Code:304 Not Modified
Request Headersview parsed
GET /user_uploads/travismillward/2012/3/23/3/0/medium/_0677866898.jpg?Signature=evsDZiw3QGsjPacG4CHn6Ji2dDA%3D&Expires=1332528782&AWSAccessKeyId=MY_ACCESS_KEYID HTTP/1.1
Host: MY_UPLOAD_CONTAINER.s3.amazonaws.com
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.83 Safari/535.11
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Referer: http://localhost:8000/m/photo/1/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
If-None-Match: "6e34e718a349e0bf9e4aefc1afad3d7d"
If-Modified-Since: Fri, 23 Mar 2012 09:00:13 GMT
Query String Parametersview URL encoded
Signature:evsDZiw3QGsjPacG4CHn6Ji2dDA=
Expires:1332528782
AWSAccessKeyId:MY_ACCESS_KEYID
Response Headersview parsed
HTTP/1.1 304 Not Modified
x-amz-id-2: LfdHa10SdWnx4UH1rc62NfUDeiNVGRzBX73CR+6GDrXJgv9zo+vyQ9A3HCr1YLVa
x-amz-request-id: THE_X_AMZ_REQUEST_ID
Date: Fri, 23 Mar 2012 18:01:16 GMT
Last-Modified: Fri, 23 Mar 2012 09:00:13 GMT
ETag: "6e34e718a349e0bf9e4aefc1afad3d7d"
Server: AmazonS3