Displaying 1 result from an estimated 1 matches for "check_student_exclusive".
2007 Sep 07
5
enforce mutual exclusivity
Hi,
First post, please be gentle! I couldn''t find any mention of this
already
I''m using ActiveRecord and I want to enforce mutual exclusivity on a
has_and_belongs_to_many.
A concrete example: I have a User which can have one or more Roles
(student, tutor, headmaster, administrator etc). However if a user is
a
student they cannot hold any other role. I was hoping to find