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Carrierwave::Cascade

Build Status

A storage plugin for carrierwave that will retrieving files from a secondary storage if the file is not present in the primary storage. New files will always be stored in the primary storage. This is perfect for use while migrating from one storage to another, or to avoid polluting a production environment when running a staging mirror.

Installation

Add this line to your application's Gemfile:

gem 'carrierwave-cascade'

Usage

Configure carrierwave to use Cascade as its storage engine. Then set primary and secondary storages to be used. Supply other configuration as needed for the storages.

CarrierWave.configure do |config|
  config.storage    = :cascade
  config.primary_storage   = :file
  config.secondary_storage = :fog

  config.fog_credentials = {
    :provider               => 'AWS'
  }
end

By default, cascade will prevent files from being deleted out of the secondary storage. If you wish secondary storage file to be deleted, specify this in the configs.

CarrierWave.configure do |config|
  config.allow_secondary_file_deletion = true
end

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request