You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: backups_controller.rb
    path of file: ./repos/wreeto_official/app/controllers
    
    the code of the file until where you have to start completion: class BackupsController < ApplicationController
	before_action :authenticate_user!
	before_action :set_backup, only: [:dest
    
	def start 
		# render :plain => service.data_json, status: 200, content_type: 'application/json'
		respond_to do |format|
			if @backups.in_progress.none?
				Backups::BackupJob.perform_later(current_user.id)
				format.html { redirect_to backups_path, notice: 'Backup job was successfully started.' }
			else 
				format.html { redirect_to backups_path, alert: 'A backup job has already started' }
			end
		end