我目前在我的Rails应用程序中使用asset_sync,并且我的Heroku应用程序中设置了环境变量.当我运行heroku配置我得到：
AWS_ACCESS_KEY_ID: XXXXXXXXXXXXXXXXXX AWS_SECRET_ACCESS_KEY: XXXXXXXXXXXXXXXXXX FOG_DIRECTORY: MY-BUCKET-NAME FOG_PROVIDER: AWS etc...
当我将我的应用程序推送到Heroku时,它会尝试运行rake资源：预编译,并且我收到以下消息：
Preparing app for Rails asset pipeline Running: rake assets:precompile /usr/local/bin/ruby /tmp/build_2pa7aisux9av8/vendor/bundle/ruby/1.9.1/bin/rake assets:precompile:nondigest RAILS_ENV=production RAILS_GROUPS=assets AssetSync: using /tmp/build_2pa7aisux9av8/config/initializers/asset_sync.rb rake aborted! Fog directory can't be blank,Aws access key can't be blank,Aws secret access key can't be blank
但是后来我跑：
heroku run rake assets:precompile --app my-app-name
…它处理所有东西,同步到S3就好了：
Running `rake assets:precompile` attached to terminal... up,run.1 /usr/local/bin/ruby /app/vendor/bundle/ruby/1.9.1/bin/rake assets:precompile:all RAILS_ENV=staging RAILS_GROUPS=assets AssetSync: using /app/config/initializers/asset_sync.rb /usr/local/bin/ruby /app/vendor/bundle/ruby/1.9.1/bin/rake assets:precompile:nondigest RAILS_ENV=staging RAILS_GROUPS=assets AssetSync: using /app/config/initializers/asset_sync.rb AssetSync: Syncing. Using: Directory Search of /app/public/assets Uploading: assets/application-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.css Uploading: assets/application-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.css.gz Uploading: assets/application-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.css.gz Uploading: assets/application-XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.css AssetSync: Done.
任何想法为什么它不会在推动时工作,但它会工作正常,当我heroku运行rake资产：预编译？
解决方法
我可以看到你正在运行资产：使用–app my-app-name选项预编译耙任务.只要确定,Heroku有多个应用程序？ (例如分期和生产).如果你确实确保运行heroku配置–app我的app-name结果输出你有与heroku配置.
如果您使用上述命令获得预期结果,那么可能ENV vars在git push上不可用,如这里所建议的asset_sync_test github readme.你可以通过在你的config / environments / * .rb文件中使用以下内容：
config.asset_sync.aws_access_key = ENV['AWS_ACCESS_KEY_ID'] config.asset_sync.aws_access_secret = ENV['AWS_SECRET_ACCESS_KEY'] config.asset_sync.aws_bucket = ENV['FOG_DIRECTORY'] config.asset_sync.fog_provider = ENV['FOG_PROVIDER']