Using join tables in ruby on rails

Question

Lets say I have two databases: one for students and one for classes. I would like to be able to \'add\' classes to a specific student and also be able to add students to a

Answer 1

This is an old question, but just in case anyone stumbles upon this like I did, you can now have the relationships has_and_belongs_to_many. So yes, you would create a join table:

create_join_table :students, :courses do |t|
  t.integer :student_id
  t.integer :course_id
end

And then in the models, you would say that a student has_and_belongs_to_many :courses And a course has_and_belongs_to_many :students. There is no need to make a third class called CourseStudent. This link has all this information