Add frozen_string_literal magic comment

re: https://www.rubydoc.info/gems/rubocop/RuboCop/Cop/Style/FrozenStringLiteralComment

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # rails-assets requires >= 1.8.4

Guardfile

@@ -1,4 +1,6 @@
 #!/usr/bin/ruby
+# frozen_string_literal: true
+
 #
 # More info at https://github.com/guard/guard#readme
 

Rakefile

@@ -1,4 +1,6 @@
 #!/usr/bin/env rake
+# frozen_string_literal: true
+
 # Add your own tasks in files placed in lib/tasks ending in .rake,
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 

Vagrantfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 

app/controllers/admin/base_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class BaseController < ApplicationController
     before_action :verify_user_admin

app/controllers/admin/booths_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class BoothsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/campaigns_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class CampaignsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/cfps_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class CfpsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/comments_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class CommentsController < Admin::BaseController
     load_and_authorize_resource

app/controllers/admin/commercials_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class CommercialsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/conferences_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class ConferencesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/contacts_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class ContactsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/difficulty_levels_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class DifficultyLevelsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/emails_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class EmailsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/event_schedules_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class EventSchedulesController < Admin::BaseController
     load_and_authorize_resource :event_schedule

app/controllers/admin/event_types_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class EventTypesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/events_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class EventsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/lodgings_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class LodgingsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/organizations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class OrganizationsController < Admin::BaseController
     load_and_authorize_resource :organization

app/controllers/admin/physical_tickets_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class PhysicalTicketsController < Admin::BaseController
     before_action :authenticate_user!

app/controllers/admin/programs_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class ProgramsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/questions_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class QuestionsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/registration_periods_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class RegistrationPeriodsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/registrations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class RegistrationsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/reports_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class ReportsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/resources_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class ResourcesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/roles_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class RolesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/rooms_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class RoomsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/schedules_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class SchedulesController < Admin::BaseController
     # By authorizing 'conference' resource, we can ensure there will be no unauthorized access to

app/controllers/admin/splashpages_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class SplashpagesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/sponsors_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class SponsorsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/sponsorship_levels_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class SponsorshipLevelsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/targets_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class TargetsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/ticket_scannings_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class TicketScanningsController < Admin::BaseController
     before_action :authenticate_user!

app/controllers/admin/tickets_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class TicketsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/tracks_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class TracksController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/users_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class UsersController < Admin::BaseController
     load_and_authorize_resource

app/controllers/admin/venue_commercials_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class VenueCommercialsController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/venues_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class VenuesController < Admin::BaseController
     load_and_authorize_resource :conference, find_by: :short_title

app/controllers/admin/versions_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class VersionsController < Admin::BaseController
     load_resource :conference, find_by: :short_title, only: :index

app/controllers/admin/volunteers_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   class VolunteersController < Admin::BaseController
     include VolunteersHelper

app/controllers/api/base_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   class BaseController < ActionController::Base
     protect_from_forgery with: :exception

app/controllers/api/v1/conferences_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   module V1
     class ConferencesController < Api::BaseController

app/controllers/api/v1/events_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   module V1
     class EventsController < Api::BaseController

app/controllers/api/v1/rooms_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   module V1
     class RoomsController < Api::BaseController

app/controllers/api/v1/speakers_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   module V1
     class SpeakersController < Api::BaseController

app/controllers/api/v1/tracks_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Api
   module V1
     class TracksController < Api::BaseController

app/controllers/application_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationController < ActionController::Base
   before_action :set_paper_trail_whodunnit
   include ApplicationHelper

app/controllers/booths_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class BoothsController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title

app/controllers/commercials_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CommercialsController < ApplicationController
   load_resource :conference, find_by: :short_title
   before_action :set_event

app/controllers/conference_registrations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceRegistrationsController < ApplicationController
   before_action :authenticate_user!, except: [:new, :create]
   load_resource :conference, find_by: :short_title

app/controllers/conferences_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferencesController < ApplicationController
   protect_from_forgery with: :null_session
   before_action :respond_to_options

app/controllers/confirmations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConfirmationsController < Devise::ConfirmationsController
   protected
 

app/controllers/openids_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class OpenidsController < ApplicationController
   load_and_authorize_resource :user
   load_and_authorize_resource through: :user

app/controllers/organizations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class OrganizationsController < ApplicationController
   load_and_authorize_resource :organization
 

app/controllers/payments_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PaymentsController < ApplicationController
   before_action :authenticate_user!
   load_and_authorize_resource

app/controllers/physical_tickets_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class PhysicalTicketsController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title

app/controllers/proposals_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ProposalsController < ApplicationController
   before_action :authenticate_user!, except: [:show, :new, :create]
   load_resource :conference, find_by: :short_title

app/controllers/registrations_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class RegistrationsController < Devise::RegistrationsController
   prepend_before_action :check_captcha, only: [:create]
 

app/controllers/schedules_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class SchedulesController < ApplicationController
   load_and_authorize_resource
   protect_from_forgery with: :null_session

app/controllers/subscriptions_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class SubscriptionsController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title

app/controllers/ticket_purchases_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TicketPurchasesController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title

app/controllers/tickets_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TicketsController < ApplicationController
   before_action :authenticate_user!
   load_resource :conference, find_by: :short_title

app/controllers/tracks_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TracksController < ApplicationController
   load_resource :conference, find_by: :short_title
   load_resource :program, through: :conference, singleton: true

app/controllers/users/omniauth_callbacks_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Users
   class OmniauthCallbacksController < Devise::OmniauthCallbacksController
     skip_before_filter :verify_authenticity_token

app/controllers/users_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class UsersController < ApplicationController
   load_and_authorize_resource
 

app/helpers/admin/volunteers_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Admin
   module VolunteersHelper
     def can_manage_volunteers?(conference)

app/helpers/application_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ApplicationHelper
   # Returns a string build from the start and end date of the given conference.
   #

app/helpers/conference_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ConferenceHelper
   # Return true if only call_for_papers or call_for_tracks or call_for_booths is open
   def one_call_open(*calls)

app/helpers/date_time_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DateTimeHelper
   ##
   # Includes functions related to date or time manipulations

app/helpers/events_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module EventsHelper
   ##
   # Includes functions related to events

app/helpers/format_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module FormatHelper
   ##
   # Includes functions related to formatting (like adding classes, colors)

app/helpers/paths_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module PathsHelper
   ##
   # Includes functions related to links or redirects

app/helpers/users_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module UsersHelper
   ##
   # Includes functions related to users

app/helpers/versions_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module VersionsHelper
   ##
   # Groups functions related to change description

app/jobs/application_job.rb

@@ -1,2 +1,4 @@
+# frozen_string_literal: true
+
 class ApplicationJob < ActiveJob::Base
 end

app/jobs/conference_cfp_update_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceCfpUpdateMailJob < ApplicationJob
   queue_as :default
 

app/jobs/conference_date_update_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceDateUpdateMailJob < ApplicationJob
   queue_as :default
 

app/jobs/conference_registration_date_update_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceRegistrationDateUpdateMailJob < ApplicationJob
   queue_as :default
 

app/jobs/conference_schedule_update_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceScheduleUpdateMailJob < ApplicationJob
   queue_as :default
 

app/jobs/conference_venue_update_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ConferenceVenueUpdateMailJob < ApplicationJob
   queue_as :default
 

app/jobs/event_comment_mail_job.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class EventCommentMailJob < ApplicationJob
   queue_as :default
 

app/mailers/mailbot.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Mailbot < ActionMailer::Base
   def registration_mail(conference, user)
     mail(to: user.email,

app/models/ability.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Ability
   include CanCan::Ability
 

app/models/admin_ability.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AdminAbility
   include CanCan::Ability
 

app/models/ahoy/event.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Ahoy
   class Event < ApplicationRecord
     self.table_name = 'ahoy_events'

app/models/answer.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Answer < ApplicationRecord
   has_many :qanswers
   has_many :questions, through: :qanswers

app/models/application_record.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 end

app/models/booth.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Booth < ApplicationRecord
   include ActiveRecord::Transitions
   has_paper_trail ignore: [:updated_at], meta: { conference_id: :conference_id }

app/models/booth_request.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class BoothRequest < ApplicationRecord
   belongs_to :booth
   belongs_to :user

app/models/campaign.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Campaign < ApplicationRecord
   validates :name, :utm_campaign, presence: true
 

app/models/cfp.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # cannot delete program if there are events submitted
 
 class Cfp < ApplicationRecord

app/models/comment.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Comment < ApplicationRecord
   acts_as_nested_set scope: %i(commentable_id commentable_type)
   validates :body, presence: true

app/models/commercial.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Commercial < ApplicationRecord
   require 'oembed'
 

app/models/concerns/revision_count.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module RevisionCount
   extend ActiveSupport::Concern
 

app/models/conference.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Conference < ApplicationRecord
   include RevisionCount
   require 'uri'

app/models/contact.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Contact < ApplicationRecord
   has_paper_trail on: [:update], ignore: [:updated_at], meta: { conference_id: :conference_id }
 

app/models/difficulty_level.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DifficultyLevel < ApplicationRecord
   belongs_to :program, touch: true
   has_many :events, dependent: :nullify

app/models/email_settings.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class EmailSettings < ApplicationRecord
   belongs_to :conference
 

app/models/event.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Event < ApplicationRecord
   include ActiveRecord::Transitions
   include RevisionCount