--- a/Gemfile	Sat Apr 14 04:19:29 2018 +0900
+++ b/Gemfile	Sat Apr 14 04:19:52 2018 +0900
@@ -1,8 +1,8 @@
 source "https://rubygems.org"
 
-gem "rails", "~> 5.1.0"
+gem "rails", "~> 5.2.0"
 gem "jquery-rails"
-gem "coffee-rails", "~> 4.2" # Rails 4.2 default
+gem "coffee-rails"
 gem "bootstrap-sass"
 
 source "https://rails-assets.org" do
@@ -17,9 +17,9 @@
 gem "activerecord-jdbcpostgresql-adapter", :platforms => :jruby
 gem "jruby-openssl", :platforms => :jruby
 
-gem "sass-rails", "~> 5.0" # Rails 4.2 default
+gem "sass-rails"
 
-gem "uglifier", ">= 1.3.0" # Rails 4.2 default
+gem "uglifier"
 
 gem "therubyrhino", :platforms => :jruby
 

--- a/Gemfile.lock	Sat Apr 14 04:19:29 2018 +0900
+++ b/Gemfile.lock	Sat Apr 14 04:19:52 2018 +0900
@@ -2,50 +2,54 @@
   remote: https://rubygems.org/
   remote: https://rails-assets.org/
   specs:
-    actioncable (5.1.4)
-      actionpack (= 5.1.4)
+    actioncable (5.2.0)
+      actionpack (= 5.2.0)
       nio4r (~> 2.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
+      websocket-driver (>= 0.6.1)
+    actionmailer (5.2.0)
+      actionpack (= 5.2.0)
+      actionview (= 5.2.0)
+      activejob (= 5.2.0)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.4)
-      actionview (= 5.1.4)
-      activesupport (= 5.1.4)
+    actionpack (5.2.0)
+      actionview (= 5.2.0)
+      activesupport (= 5.2.0)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.4)
-      activesupport (= 5.1.4)
+    actionview (5.2.0)
+      activesupport (= 5.2.0)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.1.4)
-      activesupport (= 5.1.4)
+    activejob (5.2.0)
+      activesupport (= 5.2.0)
       globalid (>= 0.3.6)
-    activemodel (5.1.4)
-      activesupport (= 5.1.4)
-    activerecord (5.1.4)
-      activemodel (= 5.1.4)
-      activesupport (= 5.1.4)
-      arel (~> 8.0)
+    activemodel (5.2.0)
+      activesupport (= 5.2.0)
+    activerecord (5.2.0)
+      activemodel (= 5.2.0)
+      activesupport (= 5.2.0)
+      arel (>= 9.0)
     activerecord-jdbc-adapter (50.0)
       activerecord (>= 2.2)
     activerecord-jdbcpostgresql-adapter (50.0)
       activerecord-jdbc-adapter (~> 50.0)
       jdbc-postgres (>= 9.4, < 43)
-    activesupport (5.1.4)
+    activestorage (5.2.0)
+      actionpack (= 5.2.0)
+      activerecord (= 5.2.0)
+      marcel (~> 0.3.1)
+    activesupport (5.2.0)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    arel (8.0.0)
-    autoprefixer-rails (7.2.2)
+    arel (9.0.0)
+    autoprefixer-rails (8.2.0)
       execjs
     bootstrap-sass (3.3.7)
       autoprefixer-rails (>= 5.2.1)
@@ -60,14 +64,14 @@
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
     concurrent-ruby (1.0.5-java)
-    crass (1.0.3)
-    erubi (1.7.0)
+    crass (1.0.4)
+    erubi (1.7.1)
     execjs (2.7.0)
-    ffi (1.9.18)
-    ffi (1.9.18-java)
+    ffi (1.9.23)
+    ffi (1.9.23-java)
     globalid (0.4.1)
       activesupport (>= 4.2.0)
-    i18n (0.9.1)
+    i18n (1.0.0)
       concurrent-ruby (~> 1.0)
     jdbc-postgres (42.1.4)
     jquery-rails (4.3.1)
@@ -75,57 +79,61 @@
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jruby-openssl (0.9.21-java)
-    loofah (2.1.1)
+    loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
+    marcel (0.3.2)
+      mimemagic (~> 0.3.2)
     method_source (0.9.0)
+    mimemagic (0.3.2)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
-    minitest (5.10.3)
-    newrelic_rpm (4.6.0.338)
-    nio4r (2.1.0)
-    nio4r (2.1.0-java)
-    nokogiri (1.8.1)
+    minitest (5.11.3)
+    newrelic_rpm (5.0.0.342)
+    nio4r (2.3.0)
+    nio4r (2.3.0-java)
+    nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.1-java)
-    pg (0.21.0)
-    puma (3.11.0)
-    puma (3.11.0-java)
-    rack (2.0.3)
-    rack-test (0.8.2)
+    nokogiri (1.8.2-java)
+    pg (1.0.0)
+    puma (3.11.4)
+    puma (3.11.4-java)
+    rack (2.0.4)
+    rack-test (1.0.0)
       rack (>= 1.0, < 3)
-    rails (5.1.4)
-      actioncable (= 5.1.4)
-      actionmailer (= 5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
-      activemodel (= 5.1.4)
-      activerecord (= 5.1.4)
-      activesupport (= 5.1.4)
+    rails (5.2.0)
+      actioncable (= 5.2.0)
+      actionmailer (= 5.2.0)
+      actionpack (= 5.2.0)
+      actionview (= 5.2.0)
+      activejob (= 5.2.0)
+      activemodel (= 5.2.0)
+      activerecord (= 5.2.0)
+      activestorage (= 5.2.0)
+      activesupport (= 5.2.0)
       bundler (>= 1.3.0)
-      railties (= 5.1.4)
+      railties (= 5.2.0)
       sprockets-rails (>= 2.0.0)
     rails-assets-commonmark (0.28.1)
     rails-assets-highlightjs (9.12.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.1.4)
-      actionpack (= 5.1.4)
-      activesupport (= 5.1.4)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
+    railties (5.2.0)
+      actionpack (= 5.2.0)
+      activesupport (= 5.2.0)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.0)
-    rb-fsevent (0.10.2)
+    rake (12.3.1)
+    rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    sass (3.5.3)
+    sass (3.5.6)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -150,13 +158,13 @@
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
     tilt (2.0.8)
-    tzinfo (1.2.4)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.0.1)
+    uglifier (4.1.9)
       execjs (>= 0.3.0, < 3)
-    websocket-driver (0.6.5)
+    websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
-    websocket-driver (0.6.5-java)
+    websocket-driver (0.7.0-java)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
 
@@ -167,18 +175,18 @@
 DEPENDENCIES
   activerecord-jdbcpostgresql-adapter
   bootstrap-sass
-  coffee-rails (~> 4.2)
+  coffee-rails
   jquery-rails
   jruby-openssl
   newrelic_rpm
   pg
   puma
-  rails (~> 5.1.0)
+  rails (~> 5.2.0)
   rails-assets-commonmark!
   rails-assets-highlightjs!
-  sass-rails (~> 5.0)
+  sass-rails
   therubyrhino
-  uglifier (>= 1.3.0)
+  uglifier
 
 BUNDLED WITH
-   1.16.0
+   1.16.1

--- a/bin/bundle	Sat Apr 14 04:19:29 2018 +0900
+++ b/bin/bundle	Sat Apr 14 04:19:52 2018 +0900
@@ -1,3 +1,3 @@
 #!/usr/bin/env ruby
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
 load Gem.bin_path('bundler', 'bundle')

--- a/bin/setup	Sat Apr 14 04:19:29 2018 +0900
+++ b/bin/setup	Sat Apr 14 04:19:52 2018 +0900
@@ -1,10 +1,9 @@
 #!/usr/bin/env ruby
-require 'pathname'
 require 'fileutils'
 include FileUtils
 
 # path to your application root.
-APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
+APP_ROOT = File.expand_path('..', __dir__)
 
 def system!(*args)
   system(*args) || abort("\n== Command #{args} failed ==")
@@ -18,6 +17,9 @@
   system! 'gem install bundler --conservative'
   system('bundle check') || system!('bundle install')
 
+  # Install JavaScript dependencies if using Yarn
+  # system('bin/yarn')
+
   # puts "\n== Copying sample files =="
   # unless File.exist?('config/database.yml')
   #   cp 'config/database.yml.sample', 'config/database.yml'

--- a/bin/update	Sat Apr 14 04:19:29 2018 +0900
+++ b/bin/update	Sat Apr 14 04:19:52 2018 +0900
@@ -1,10 +1,9 @@
 #!/usr/bin/env ruby
-require 'pathname'
 require 'fileutils'
 include FileUtils
 
 # path to your application root.
-APP_ROOT = Pathname.new File.expand_path('../../', __FILE__)
+APP_ROOT = File.expand_path('..', __dir__)
 
 def system!(*args)
   system(*args) || abort("\n== Command #{args} failed ==")
@@ -18,6 +17,9 @@
   system! 'gem install bundler --conservative'
   system('bundle check') || system!('bundle install')
 
+  # Install JavaScript dependencies if using Yarn
+  # system('bin/yarn')
+
   puts "\n== Updating database =="
   system! 'bin/rails db:migrate'
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bin/yarn	Sat Apr 14 04:19:52 2018 +0900
@@ -0,0 +1,11 @@
+#!/usr/bin/env ruby
+APP_ROOT = File.expand_path('..', __dir__)
+Dir.chdir(APP_ROOT) do
+  begin
+    exec "yarnpkg", *ARGV
+  rescue Errno::ENOENT
+    $stderr.puts "Yarn executable was not detected in the system."
+    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
+    exit 1
+  end
+end

--- a/config/application.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/application.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -5,9 +5,14 @@
 
 require_relative "config_init"
 
+require "active_model/railtie"
+# require "active_job/railtie"
 require "active_record/railtie"
+# require "active_storage/engine"
 require "action_controller/railtie"
 # require "action_mailer/railtie"
+require "action_view/railtie"
+# require "action_cable/engine"
 require "sprockets/railtie"
 require "rails/test_unit/railtie"
 
@@ -58,5 +63,7 @@
     config.assets.initialize_on_precompile = false
 
     config.action_view.field_error_proc = proc { |html| html }
+
+    config.load_defaults 5.0
   end
 end

--- a/config/environments/development.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/environments/development.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -9,15 +9,17 @@
   # Do not eager load code on boot.
   config.eager_load = false
 
-  # Show full error reports and disable caching.
+  # Show full error reports.
   config.consider_all_requests_local = true
+
   # Enable/disable caching. By default caching is disabled.
-  if Rails.root.join("tmp/caching-dev.txt").exist?
-    config.action_controller.perform_caching = false
+  # Run rails dev:cache to toggle caching.
+  if Rails.root.join('tmp', 'caching-dev.txt').exist?
+    config.action_controller.perform_caching = true
 
     config.cache_store = :memory_store
     config.public_file_server.headers = {
-      "Cache-Control" => "public, max-age=172800"
+      'Cache-Control' => "public, max-age=#{2.days.to_i}"
     }
   else
     config.action_controller.perform_caching = false
@@ -25,8 +27,8 @@
     config.cache_store = :null_store
   end
 
-  # Don't care if the mailer can't send.
-  # config.action_mailer.raise_delivery_errors = false
+  # Store uploaded files on the local file system (see config/storage.yml for options)
+  # config.active_storage.service = :local
 
   # Print deprecation notices to the Rails logger.
   config.active_support.deprecation = :log
@@ -34,18 +36,21 @@
   # Raise an error on page load if there are pending migrations.
   config.active_record.migration_error = :page_load
 
+  # Highlight code that triggered database queries in logs.
+  config.active_record.verbose_query_logs = true
+
   # Debug mode disables concatenation and preprocessing of assets.
   # This option may cause significant delays in view rendering with a large
   # number of complex assets.
   config.assets.debug = true
 
-  # Raises error for missing translations.
-  config.action_view.raise_on_missing_translations = true
-
   # Suppress logger output for asset requests.
   config.assets.quiet = true
 
-  # Use an evented file watcher to asynchronously detect changes in source code
+  # Raises error for missing translations
+  # config.action_view.raise_on_missing_translations = true
+
+  # Use an evented file watcher to asynchronously detect changes in source code,
   # routes, locales, etc. This feature depends on the listen gem.
   # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
 end

--- a/config/environments/test.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/environments/test.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -15,7 +15,7 @@
   # Configure public file server for tests with Cache-Control for performance.
   config.public_file_server.enabled = true
   config.public_file_server.headers = {
-    "Cache-Control" => "public, max-age=3600"
+    'Cache-Control' => "public, max-age=#{1.hour.to_i}"
   }
 
   # Show full error reports and disable caching.
@@ -27,12 +27,9 @@
 
   # Disable request forgery protection in test environment.
   config.action_controller.allow_forgery_protection = false
-  # config.action_mailer.perform_caching = false
 
-  # Tell Action Mailer not to deliver emails to the real world.
-  # The :test delivery method accumulates sent emails in the
-  # ActionMailer::Base.deliveries array.
-  # config.action_mailer.delivery_method = :test
+  # Store uploaded files on the local file system in a temporary directory
+  config.active_storage.service = :test
 
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr

--- a/config/initializers/application_controller_renderer.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/initializers/application_controller_renderer.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -1,6 +1,8 @@
 # Be sure to restart your server when you modify this file.
 
-# ApplicationController.renderer.defaults.merge!(
-#   http_host: 'example.org',
-#   https: false
-# )
+# ActiveSupport::Reloader.to_prepare do
+#   ApplicationController.renderer.defaults.merge!(
+#     http_host: 'example.org',
+#     https: false
+#   )
+# end

--- a/config/initializers/assets.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/initializers/assets.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -1,11 +1,14 @@
 # Be sure to restart your server when you modify this file.
 
 # Version of your assets, change this if you want to expire all your assets.
-Rails.application.config.assets.version = "1.0"
+Rails.application.config.assets.version = '1.0'
 
-# Add additional assets to the asset load path
+# Add additional assets to the asset load path.
 # Rails.application.config.assets.paths << Emoji.images_path
+# Add Yarn node_modules folder to the asset load path.
+Rails.application.config.assets.paths << Rails.root.join('node_modules')
 
 # Precompile additional assets.
-# application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
-# Rails.application.config.assets.precompile += %w( search.js )
+# application.js, application.css, and all non-JS/CSS in the app/assets
+# folder are already added.
+# Rails.application.config.assets.precompile += %w( admin.js admin.css )

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/initializers/content_security_policy.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -0,0 +1,25 @@
+# Be sure to restart your server when you modify this file.
+
+# Define an application-wide content security policy
+# For further information see the following documentation
+# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy
+
+# Rails.application.config.content_security_policy do |policy|
+#   policy.default_src :self, :https
+#   policy.font_src    :self, :https, :data
+#   policy.img_src     :self, :https, :data
+#   policy.object_src  :none
+#   policy.script_src  :self, :https
+#   policy.style_src   :self, :https
+
+#   # Specify URI for violation reports
+#   # policy.report_uri "/csp-violation-report-endpoint"
+# end
+
+# If you are using UJS then enable automatic nonce generation
+# Rails.application.config.content_security_policy_nonce_generator = -> request { SecureRandom.base64(16) }
+
+# Report CSP violations to a specified URI
+# For further information see the following documentation:
+# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only
+# Rails.application.config.content_security_policy_report_only = true

--- a/config/initializers/cookies_serializer.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/initializers/cookies_serializer.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -2,4 +2,4 @@
 
 # Specify a serializer for the signed and encrypted cookie jars.
 # Valid options are :json, :marshal, and :hybrid.
-Rails.application.config.action_dispatch.cookies_serializer = :hybrid
+Rails.application.config.action_dispatch.cookies_serializer = :json

--- a/config/initializers/new_framework_defaults.rb	Sat Apr 14 04:19:29 2018 +0900
+++ b/config/initializers/new_framework_defaults.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -17,8 +17,5 @@
 # Require `belongs_to` associations by default. Previous versions had false.
 Rails.application.config.active_record.belongs_to_required_by_default = true
 
-# Do not halt callback chains when a callback returns false. Previous versions had true.
-ActiveSupport.halt_callback_chains_on_return_false = false
-
 # Configure SSL options to enable HSTS with subdomains. Previous versions had false.
 Rails.application.config.ssl_options = { hsts: { subdomains: true } }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/initializers/new_framework_defaults_5_2.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -0,0 +1,35 @@
+# Be sure to restart your server when you modify this file.
+#
+# This file contains migration options to ease your Rails 5.2 upgrade.
+#
+# Once upgraded flip defaults one by one to migrate to the new default.
+#
+# Read the Guide for Upgrading Ruby on Rails for more info on each option.
+
+# Make Active Record use stable #cache_key alongside new #cache_version method.
+# This is needed for recyclable cache keys.
+# Rails.application.config.active_record.cache_versioning = true
+
+# Use AES-256-GCM authenticated encryption for encrypted cookies.
+# Also, embed cookie expiry in signed or encrypted cookies for increased security.
+#
+# This option is not backwards compatible with earlier Rails versions.
+# It's best enabled when your entire app is migrated and stable on 5.2.
+#
+# Existing cookies will be converted on read then written with the new scheme.
+# Rails.application.config.action_dispatch.use_authenticated_cookie_encryption = true
+
+# Use AES-256-GCM authenticated encryption as default cipher for encrypting messages
+# instead of AES-256-CBC, when use_authenticated_message_encryption is set to true.
+# Rails.application.config.active_support.use_authenticated_message_encryption = true
+
+# Add default protection from forgery to ActionController::Base instead of in
+# ApplicationController.
+# Rails.application.config.action_controller.default_protect_from_forgery = true
+
+# Store boolean values are in sqlite3 databases as 1 and 0 instead of 't' and
+# 'f' after migrating old data.
+# Rails.application.config.active_record.sqlite3.represent_boolean_as_integer = true
+
+# Use SHA-1 instead of MD5 to generate non-sensitive digests, such as the ETag header.
+# Rails.application.config.active_support.use_sha1_digests = true

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/spring.rb	Sat Apr 14 04:19:52 2018 +0900
@@ -0,0 +1,6 @@
+%w[
+  .ruby-version
+  .rbenv-vars
+  tmp/restart.txt
+  tmp/caching-dev.txt
+].each { |path| Spring.watch(path) }

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/config/storage.yml	Sat Apr 14 04:19:52 2018 +0900
@@ -0,0 +1,34 @@
+test:
+  service: Disk
+  root: <%= Rails.root.join("tmp/storage") %>
+
+local:
+  service: Disk
+  root: <%= Rails.root.join("storage") %>
+
+# Use rails credentials:edit to set the AWS secrets (as aws:access_key_id|secret_access_key)
+# amazon:
+#   service: S3
+#   access_key_id: <%= Rails.application.credentials.dig(:aws, :access_key_id) %>
+#   secret_access_key: <%= Rails.application.credentials.dig(:aws, :secret_access_key) %>
+#   region: us-east-1
+#   bucket: your_own_bucket
+
+# Remember not to checkin your GCS keyfile to a repository
+# google:
+#   service: GCS
+#   project: your_project
+#   credentials: <%= Rails.root.join("path/to/gcs.keyfile") %>
+#   bucket: your_own_bucket
+
+# Use rails credentials:edit to set the Azure Storage secret (as azure_storage:storage_access_key)
+# microsoft:
+#   service: AzureStorage
+#   storage_account_name: your_account_name
+#   storage_access_key: <%= Rails.application.credentials.dig(:azure_storage, :storage_access_key) %>
+#   container: your_container_name
+
+# mirror:
+#   service: Mirror
+#   primary: local
+#   mirrors: [ amazon, google, microsoft ]