如何在heroku上设置django-compressor，离线压缩到S3

Question

我遵循在SO和不同博客上发现的每个QA建议，在我的开发机器上一切正常，在heroku上没有任何工作。

这里是我的设置：

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 

当我运行collectstatic /压缩一切都很好，我看到这些文件收集到S3，放在适当的地方。我看到清单文件。

用压缩标签载入任何页面，显示错误OfflineGenerationError: You have offline compression enabled but key "d2a53169c44dec41ce3ee7da19b2b9d4" is missing from offline manifest.运行python manage.py compress再次解决任何问题。当我检查清单文件时，确实找到的关键字不存在。

这里怎么回事？

的问题，我已经检查：

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

在我身边，我有非常相似的配置，而且我成功地使用压缩机超过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压缩本地，并具有明显的对我的静态文件目录下生成。 Heroku只处理collecstatic并将最新的清单版本提交给我的cdn。

问候，

Answer 2

我发现，包含post_compile钩来解决这个问题一个Git仓库。它在Heroku构建Django应用程序后运行压缩（如果您在压缩器设置中需要较少，也会安装lessc）。

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

Answer 3

我完成在某些行上述溶液中，以固定在亚马逊创造许多（倍数）的问题清单_％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