Question

I’ve been working my way through Rails 3 In Action and one element is confusing me.

Why doesn’t User have a has_many association declared with Projects? Project has_many Tickets. What is it about the relationship between User and Project that differs from the relationship between Project and Ticket?

I would post code, but I think this question will only make sense to someone who has worked through the book (and therefore has the code to refer to).

Answer 1

A user never needs to have many projects, because the way that projects are shown to a user is through a scope on the Project model. If you wanted to have this association, then you will need to have a user_id attribute on the Project instances.