Hi all,
I have a requirement were the following is to be done:
A user can belong to single chapter. Chapter has many channels.. So a particular user can only be a part of a single chapter. How can i do this validation in rails 3?
If a user belongs_to chapter then there is no need to validate that the user is part of only one chapter as it is impossible to be part of more than one with a belongs_to relationship. Have a look at the Rails Guide on ActiveRecord Relationships for more information on relationships.
Colin.
