rails70: LogArchiver::AppStatus を起動時の自動読み込み対象として設定する

@see: https://railsguides.jp/upgrading_ruby_on_rails.html#%E5%88%9D%E6%9C%9F%E5%8C%96%E4%B8%AD%E3%81%AE%E3%82%AA%E3%83%BC%E3%83%88%E3%83%AD%E3%83%BC%E3%83%89
@see: https://railsguides.jp/autoloading_and_reloading_constants.html#%E3%82%A2%E3%83%97%E3%83%AA%E3%82%B1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E8%B5%B7%E5%8B%95%E6%99%82%E3%81%AE%E8%87%AA%E5%8B%95%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF

config/initializers/app_status.rb

@@ -1,6 +1,8 @@
 # アプリケーションの状態を取得できるようにする
-Rails.application.config.app_status = LogArchiver::AppStatus.new(
-  LogArchiver::Version,
-  Time.now,
-  LogArchiver::AppStatus.get_commit_id
-)
+Rails.application.config.to_prepare do
+  Rails.application.config.app_status = LogArchiver::AppStatus.new(
+    LogArchiver::Version,
+    Time.now,
+    LogArchiver::AppStatus.get_commit_id
+  )
+end

db/migrate/20210222045931_drop_foreign_key_from_channel_last_speeches_to_conversation_messages_if_exists.rb

@@ -1,6 +1,6 @@
 class DropForeignKeyFromChannelLastSpeechesToConversationMessagesIfExists < ActiveRecord::Migration[6.1]
   def change
-    if foreign_key_exist?(:channel_last_speeches, :conversation_messages)
+    if foreign_key_exists?(:channel_last_speeches, :conversation_messages)
       remove_foreign_key(:channel_last_speeches, :conversation_messages)
     end
   end