How to do a find to show all classes a student is NOT enrolled in?
Only 3 tables. Students, Classes and a join table called Enrollment
Students table has an id StudentID and Classes table has an is ClassesID. These two ids are entries in the join table to show which classes a student IS enrolled in.
We'd like to show a list of the classes that a student is NOT enrolled in also so they can add in a class that they are not currently enrolled in.
How to do a find that shows all classes a student is NOT enrolled in.