Hi, I'm trying to figure out the correct "Rails" way to perform validation prior to creating a new assocation between my models. Here's the models:
class User < ActiveRecord::Base has_and_belongs_to_many :roles has_many :instructorships has_many :instructed_courses, :through => :instructorships, :source => :course class Course < ActiveRecord::Base has_many :instructorships has_many :instructors, :through => :instructorships, :source => :instructor class Instructorship < ActiveRecord::Base belongs_to :instructor, :class_name => 'User', :foreign_key => 'user_id' belongs_to :course I'm trying to introduce a validation whereby only user objects with a role of 'instructor' can be assigned as an instructor on a course. Firstly, where would this validation go? On the association model? And secondly, what is the right way to set this up? thanks for your help, Cathal. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/bUuvgClzISMJ. For more options, visit https://groups.google.com/groups/opt_out.
