@messages = Message.all

告诉 Rails 应用程序查询数据库以获取消息表中的每条消息.所以如果你想使用一个以这种方式使用 Rails 应用程序，那么是的，您必须拥有某种 messages 表.您说您不打算存储消息，因此 index 操作应该转到空白聊天屏幕.所以只要去掉@messages = Message.all.如果你想要一个滚动的聊天消息列表，我想你可以将每一行写入一个数组并让索引页面显示出来.只需在聊天会话开始时将该数组设置为空白即可.

Tells the Rails app to query the db for every message in the message table. So if you want to use a Rails app in that way, then yes you would have to have some sort of a messages table. You said you are not looking to store the messages so the index action should go to a blank chat screen. So just get rid of @messages = Message.all. If you wanted to have a scrolling list of chat messages I guess you could just write each line to an array and have the index page show that. Just set that array to be blank at the beginning of a chat session.