Condition "not seen by user"?

[cheskiefisch]

How do they program to show certain things differently based on whether the user saw it already?

For example a feed with posts, and new post not seen by this user are different color, or a textbox showing # of new posts not seen by user

[JBusiness]

Hey ! I personally use a field “seen by” in my thing which is a list of users, then when the page is loaded (or a button is clicked) I add current user to this list. Then in my condition I check whether this list contains current user or not. So you can : Do a search for Thing who’s “seen by” list of users doesn’t contain current user:count for displaying numbers of posts not seen by this user!

Hope it helps you