User notifications about new content?

Question

Yii

I want to add notifications to users on the site. There are several categories of materials and you need to display notifications about new and edited materials in the header of the site, as well as mark these materials in the feed. So I thought to create a table with all notifications and simply display to the user those notifications that appeared after the last visit to the site. But here the question is where and how to store notifications for the user, so that when you log in from different devices everything is the same, on one it clears the list of notifications and disappears on the other. Where to dig?

Answer 1

Store records like notification_id, user_id.
As soon as the user sees the notification, make a record.