How do I order a has_many through association in Ruby on Rails?

Question

Given the following AR models, I would like to sort users alphabetically by last name when given a handle to a task:

#user
has_many :assignments
has_many :ta         


        

Answer 1

The M.G.Palmer's approach works well, however table name is involved. There is a better way to do it:

has_many :users, :through => :assignments, :order => [ :last_name, :first_name ]