如何在heroku上設置django-compressor，離線壓縮到S3

Question

我遵循在SO和不同博客上發現的每個QA建議，在我的開發機器上一切正常，在heroku上沒有任何工作。

這裏是我的設置：

DEFAULT_FILE_STORAGE = 'arena.utils.MediaRootS3BotoStorage' # media files 
# storage 

AWS_ACCESS_KEY_ID = os.environ.get('AWS_ACCESS_KEY_ID') 
AWS_SECRET_ACCESS_KEY = os.environ.get('AWS_SECRET_ACCESS_KEY') 
AWS_STORAGE_BUCKET_NAME = os.environ.get('AWS_STORAGE_BUCKET_NAME') 
AWS_PRELOAD_METADATA = True # necessary to fix manage.py collectstatic command to only upload changed files instead of all files 

S3_URL = 'https://%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME 
MEDIA_URL = S3_URL + '/media/' 

STATIC_URL = S3_URL + '/static/' 

ADMIN_MEDIA_PREFIX = STATIC_URL + 'admin/' 


COMPRESS_URL = STATIC_URL 
COMPRESS_OFFLINE = True 
COMPRESS_STORAGE = 'utils.CachedS3BotoStorage' 
STATICFILES_STORAGE = COMPRESS_STORAGE 

當我運行collectstatic /壓縮一切都很好，我看到這些文件收集到S3，放在適當的地方。我看到清單文件。

用壓縮標籤載入任何頁面，顯示錯誤OfflineGenerationError: You have offline compression enabled but key "d2a53169c44dec41ce3ee7da19b2b9d4" is missing from offline manifest.運行python manage.py compress再次解決任何問題。當我檢查清單文件時，確實找到的關鍵字不存在。

這裏怎麼回事？

的問題，我已經檢查：

How to configure django-compressor and django-staticfiles with Amazon's S3?

Django Compressor with S3 URL Heroku

Configuring django-compressor with remote storage (django-storage - amazon s3)

Answer 1

在我身邊，我有非常相似的配置，而且我成功地使用壓縮機超過2年。

settings.py

COMPRESS_STORAGE = 'MyAwesomeApp.app.CachedS3BotoStorage.CachedS3BotoStorage' 

AWS_ACCESS_KEY_ID = '#######' 
AWS_SECRET_ACCESS_KEY = '########################+#########+BqoQ' 
AWS_STORAGE_BUCKET_NAME = 'myAmazonS3cdn.myawesomewebsite.com' 
AWS_S3_SECURE_URLS = False 
AWS_QUERYSTRING_AUTH = False 

COMPRESS_ROOT = 'MyAwesomeApp/static' 
STATIC_ROOT = 'MyAwesomeApp/static/javascript' 
COMPRESS_OUTPUT_DIR = 'compressed' 
STATICFILES_STORAGE = COMPRESS_STORAGE 

STATIC_URL = "http://myAmazonS3cdn.myawesomewebsite.com/" 
COMPRESS_URL = STATIC_URL 
COMPRESS_ENABLED = True 

CachedS3BotoStorage.py

from django.core.files.storage import get_storage_class 
from storages.backends.s3boto import S3BotoStorage 

from django.core.files.base import File 

class CachedS3BotoStorage(S3BotoStorage): 
    """ 
    S3 storage backend that saves the files locally, too. 
    """ 
    def __init__(self, *args, **kwargs): 
     super(CachedS3BotoStorage, self).__init__(*args, **kwargs) 
     self.local_storage = get_storage_class("compressor.storage.CompressorFileStorage")() 

    def save(self, name, content): 
     name = super(CachedS3BotoStorage, self).save(name, content) 
     self.local_storage._save(name, content) 
     return name 

我跑蟒蛇managep.py壓縮本地，並具有明顯的對我的靜態文件目錄下生成。 Heroku只處理collecstatic並將最新的清單版本提交給我的cdn。

問候，

Answer 2

我發現，包含post_compile鉤來解決這個問題一個Git倉庫。它在Heroku構建Django應用程序後運行壓縮（如果您在壓縮器設置中需要較少，也會安裝lessc）。

https://github.com/nigma/heroku-django-cookbook

Answer 3

我完成在某些行上述溶液中，以固定在亞馬遜創造許多（倍數）的問題清單_％JSON S3

在setting.py：

STATICFILES_STORAGE = 'your_package.s3utils.CachedS3BotoStorage' 

in s3utils.py：

from storages.backends.s3boto import S3BotoStorage 
from django.core.files.storage import get_storage_class 

class CachedS3BotoStorage(S3BotoStorage): 
    """ 
    S3 storage backend that saves the files locally, too. 
    """ 
    location = 'static' 

    def __init__(self, *args, **kwargs): 
     super(CachedS3BotoStorage, self).__init__(*args, **kwargs) 
     self.local_storage = get_storage_class(
      "compressor.storage.CompressorFileStorage")() 

    def url(self, name): 
     """ 
     Fix problem images admin Django S3 images 
     """ 
     url = super(CachedS3BotoStorage, self).url(name) 
     if name.endswith('/') and not url.endswith('/'): 
      url += '/' 
     return url 

    def save(self, name, content): 
     name = super(CachedS3BotoStorage, self).save(name, content) 
     self.local_storage._save(name, content) 
     return name 

    # HERE is secret to dont generating multiple manifest.json and to delete manifest.json in Amazon S3 
    def get_available_name(self, name): 
     if self.exists(name): 
      self.delete(name) 
     return name