django-storageとs3botoバックエンドを使用して、ブラウザがイメージをキャッシュするようにイメージのヘッダを要求するためにキャッシュ情報を追加するにはどうすればいいですか？

Question

私はs3バックエンドではなく、s3botoバックエンドを使用しています。あなたはそれぞれのファイルで送信されたヘッダを設定したい場合は

AWS_HEADERS（オプション）

：それはあなたの settings.pyファイルにAWS_HEADERS変数を指定すると言うdjango-storages docsで

ストレージ：

# 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', 
} 

これは私のために働いていません。ここで

私のモデルである：

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) 

これは私がイメージを持っている私のテンプレート上にあるものである...ここで

<img class='shadow' src='{{ object.medium.url }}'> 

は、リクエストとレスポンスヘッダです：

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 

画像へのパスをアドレスバーに貼り付けると、画像がキャッシュされ、304が表示されます。ホース要求と応答ヘッダ：

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 

Answer 1

は私にこの答えを与えたblackrobotに感謝します。

あなたsettings.pyに以下を追加します。

AWS_QUERYSTRING_AUTH = False