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# upload_file.rb
class UploadFile < ApplicationRecord
	mount_uploader :file, FileUploader
end

rails generate uploader File # 프로젝트/app/uploaders/file_uploader.rb가 생성됨.

#file_uploader.rb
Class FileUploader < CarrierWave::Uploader::Base

rails generate controller UploadFile # 프로젝트/app/controllers/upload_file_controller.rb가 생성됨.

rails generate migration AddFileToUploadFile file:string # UploadFile에 파일을 담을 'file' 필드 추가
rake db:migrate

#config/routes.rb
Rails.application.routes.draw do
	...
	resource :upload_file #라우터와 컨트롤러 연결
	...
end

#upload_file.rb

#file_uploader.rb