Profile: Akhil

Problem:
How to allow users (logged in) to mark a post as "read", "complete", or otherwise bookmark them as favorites using only the Toolset plugins.

Solution:
There are a few plugins out there they might make this easier:
https://wordpress.org/plugins/wp-favorite-posts/
https://wordpress.org/plugins/favorites/

With Toolset only, you would need CRED form for this, as CRED is the only Plugin that allows you front end interaction as UserContent

The Posts need a Field that stores the Status (complete, finish, favorite)
You will need a field holding the user Information as well, so not all users see the status, as some might have finished a post, others not.

You will need to create a CRED Form, and hide with

all the Form fields, and only show the Submit Button, which has a custom value like "favorite this post"

Then you need to update the Post with this form, it will edit the Posts's Field "wpcf-favorite" as example with the user ID.
Then you can re-use that info to display Favorite Posts on a per user basis.

Since you will have many users, you will either need a new Custom Field for each post / each user, or the User ID stored as a Array, which you explode on evaluation and get the Current user's ID to compare with the stored ID's.

This needs Custom Programming Code with PHP, WordPress API and CRED API.

This is the Documentation to our CRED API:
https://toolset.com/documentation/user-guides/cred-api/