app/controllers/application_controller.rb


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class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  before_action :choose_random_song

  private

    def after_sign_out_path_for(resource)
      new_session_path(resource)
    end

    def choose_random_song
      ids = Scrobble.ids
      if ids.empty?
        @random_song = nil
      else
        @random_song = Scrobble.find(ids.sample)
      end
    end
end