refile in rails5

application.rb

# config/application.rb

module MyApp
  class Application < Rails::Application
    config.refile = config_for(:refile)
  end
end

Gemfile

# NOTE: https://github.com/refile/refile/pull/486
# NOTE: https://github.com/refile/refile/issues/447
gem 'refile', github: 'jastkand/refile', branch: 'mime-types-v3', require: 'refile/rails'
gem 'sinatra', '~> 2.0.0.beta2', require: false
# gem 'refile-s3'

initializer.rb

# config/initializers/refile.rb

Refile.types[:video] = Refile::Type.new(:video,
  content_type: %w[video/mp4]
)

if Rails.configuration.refile['backend'] == 's3'
  require 'refile/s3'

  Refile.cache = Refile::S3.new(prefix: "#{Rails.env}/cache", **Rails.configuration.refile['options'].to_hash.symbolize_keys)
  Refile.store = Refile::S3.new(prefix: "#{Rails.env}/store", **Rails.configuration.refile['options'].to_hash.symbolize_keys)
end

Refile.app_host = Rails.configuration.refile['app_host']
Refile.cdn_host = Rails.configuration.refile['cdn_host']

refile.yml

default: &default
  backend: file_system
  options: {}
  app_host: 'http://localhost:3000'
  cdn_host:

s3: &s3
  backend: s3
  options:
    access_key_id: <%= ENV['AWS_ACCESS_KEY_ID'] %>
    secret_access_key:  <%= ENV['AWS_SECRET_ACCESS_KEY'] %>
    region: ap-northeast-1
    bucket: bucket_name

development:
  <<: *default

test:
  <<: *default

staging:
  <<: *s3
  cdn_host: 'https://hogehoge.cloudfront.net'

production:
  <<: *s3
  cdn_host: 'https://fugafuga.cloudfront.net'

support.rb

# spec/support/refile.rb

require "refile/file_double"

module RefileHelper
  def refile_double(type: nil)
    content_type = Refile.types[type].content_type.sample if type
    extension = MIME::Types[content_type].first.extensions.first if content_type
    Refile::FileDouble.new("dummy", Faker::File.file_name(nil, nil, extension), content_type: content_type)
  end
end

FactoryGirl::SyntaxRunner.send(:include, RefileHelper)

RSpec.configure do |config|
  config.include RefileHelper
end