Rails和carrierwave

Question

我在尝试将图像上传到aws存储桶时出现此错误。

no implicit conversion of nil into String

我目前只使用了一个上传类和一个初始化器文件。

初始化器/carrierwave.rb e.rb

Carrierwave.configure do |config|

    config.storage = :aws
    config.aws_bucket = 'larfs'
    config.aws_acl = :public_read
    config.assets_host = ''
    config.aws_authenticated_url_expiration = 60 * 6 * 24 * 365

    config.aws_credentials = {

        access_key_id: 132abc,
        secret_access_key: 123abc

    }

结束

videouploader类(在此实例中仅用于图像)

class VideoUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
   include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  storage :file
  # storage :fog
  storage :aws

  # 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

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
    # process :scale => [200, 300]
  #
  # def scale(width, height)
     # process r
  # end

  # Create different versions of your uploaded files:
  version :thumb do
    # process :scale => [50, 50]
    process :resize_to_fill => [90, 90]
  end

  version :index do
     process :resize_to_fill => [200, 200]
  end

  version :medium do
    # process :scale => [150, 170]
    process :resize_to_fit => [200, 300]
  end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  def extension_white_list
    %w(jpg jpeg gif png)
  end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end

end

Answer 1

添加Gemfile:-

gem 'carrierwave'
gem 'rmagick'
gem 'fog'
gem 'carrierwave_direct'

在initializers/carrierwave.rb中：

CarrierWave.configure do |config|
  config.fog_credentials = {
    provider: "AWS",
    aws_access_key_id:  '132abc',
    aws_secret_access_key: '123abc'
  }
  config.fog_directory = 'larfs'
end  

在videouploader class中：

class VideoUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  # include CarrierWave::RMagick
   include CarrierWave::MiniMagick

  # Choose what kind of storage to use for this uploader:
  #storage :file
  storage :fog
  #storage :aws

  # 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

  # Provide a default URL as a default if there hasn't been a file uploaded:
  # def default_url
  #   # For Rails 3.1+ asset pipeline compatibility:
  #   # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_'))
  #
  #   "/images/fallback/" + [version_name, "default.png"].compact.join('_')
  # end

  # Process files as they are uploaded:
    # process :scale => [200, 300]
  #
  # def scale(width, height)
     # process r
  # end

  # Create different versions of your uploaded files:
  version :thumb do
    # process :scale => [50, 50]
    process :resize_to_fill => [90, 90]
  end

  version :index do
     process :resize_to_fill => [200, 200]
  end

  version :medium do
    # process :scale => [150, 170]
    process :resize_to_fit => [200, 300]
  end

  # Add a white list of extensions which are allowed to be uploaded.
  # For images you might use something like this:
  def extension_white_list
    %w(jpg jpeg gif png)
  end

  # Override the filename of the uploaded files:
  # Avoid using model.id or version_name here, see uploader/store.rb for details.
  # def filename
  #   "something.jpg" if original_filename
  # end

end

Answer 2

我花了很多时间尝试让carrierwave和fog协同工作，将图片上传到AWS。

最后，它就像离开Fog并使用carrierwave-aws gem - https://github.com/sorentwo/carrierwave-aws一样简单

文档很容易理解。

Fog远比我需要的简单的图片上传和carrierwave-aws更好用。

有很多好处可供切换，除非您因特定需求而受制于Fog。