轨道上的红宝石 3 - 载波雾 (S3) Heroku

Question

我正在努力进行此设置，并且已经通读了Carrierwave文档，并且仍然在拉头发。即使在开发模式下，当我尝试启动服务器时，我也收到错误。

退出 /Users/my-machine/.rvm/gems/ruby-1.9.3-p327/gems/carrierwave-0.7.1/lib/carrierwave/uploader/configuration.rb：73：in 'eval'：无法将 nil 转换为字符串（类型错误）

这是我的设置。

config/initializers/carrierwave.rb

S3_CONFIG = YAML.load_file(Rails.root.join('config', 'amazon_s3.yml'))[Rails.env]
CarrierWave.configure do |config|
  config.storage              = :s3
  config.s3_access_policy     = :public_read
  config.s3_access_key_id     = S3_CONFIG['access_key_id']
  config.s3_secret_access_key = S3_CONFIG['secret_access_key']
  config.s3_bucket            = S3_CONFIG['bucket']
  config.s3_region           = 'us-east-1'
end

config/amazon_s3.yml

development:
  access_key_id: xxxxxxxxxxxxxxxxxxx
  secret_access_key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  bucket: dev-bucket
test:
  access_key_id: xxxxxxxxxxxxxxxxxxx
  secret_access_key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  bucket: test-bucket
production:
  access_key_id: xxxxxxxxxxxxxxxxxxx
  secret_access_key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  bucket: prod-bucket

app/uploaders/image_uploader.rb

class ImageUploader < CarrierWave::Uploader::Base
  # Choose what kind of storage to use for this uploader:
  #storage :file
  storage :fog
  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end
  # fix for Heroku, unfortunately, it disables caching, 
  # see: https://github.com/jnicklas/carrierwave/wiki/How-to%3A-Make-Carrierwave-work-on-Heroku
  def cache_dir
    "#{Rails.root}/tmp/uploads"
  end
end

Answer 1

如何在开发环境中建立S3_CONFIG环境变量？看来你不见了。