ruby on rails - Not being able to order by includes on Rails3 -

i have following expression:

user.clocks.includes(:users, :runs => :user_runs).find_by_id(params[:id]) 

which seems work fine. when add orders, this:

user.clocks.includes(:users, :runs => :user_runs).orders("users.names").find_by_id(params[:id]) 

it breaks following error:

activerecord::configurationerror: association named 'user_runs' not found; perhaps misspelled it? app/controllers/clocks_controller.rb:19:in `show'     test/functional/clocks_controller_test.rb:21:in `__bind_1286475263_942556' 

any ideas why?

the model looks this:

class clock < activerecord::base   has_and_belongs_to_many :users   has_many :runs end  class run < activerecord::base   belongs_to :clock   has_many :user_runs   has_many :users, :through => :user_runs end  class userrun < activerecord::base   belongs_to :run   belongs_to :user end 

continuing investigation i've tried this:

ubiquitous_user.clocks.includes(:runs => :user_runs).find_by_id(params[:id]) 

and i've noticed queries it's generating doesn't user_runs @ all. odd.

i've created set of tests try figure going on:

  context "a graph of users, clocks, runs, etc"     setup       @users = []       10.times         @users << factory.create(:user)       end       @clocks = []       10.times         @clocks << factory.create(:clock, :users => @users)       end       @clocks.each |clock|         10.times           run = factory.create :run, :clock => clock           @users.each |user|             factory.create :user_run, :run => run, :user => user           end         end       end       @user = @users.first       @clock = @clocks.first     end      should "find clock"       assert_not_nil @user.clocks.find(@clock.id)     end      should "find clock users"       assert_not_nil @user.clocks.includes(:users).find(@clock.id)     end      should "find clock users , runs"       assert_not_nil @user.clocks.includes(:users, :runs).find(@clock.id)     end      should "find clock users, runs , user_runs"       assert_not_nil @user.clocks.includes(:users, :runs => :user_runs).find(@clock.id)     end      should "find clock users order users.name"       assert_not_nil @user.clocks.includes(:users).order("users.name").find(@clock.id)     end      should "find clock users , runs order users.name"       assert_not_nil @user.clocks.includes(:users, :runs).order("users.name").find(@clock.id)     end      should "find clock users, runs , user_runs order users.name"       assert_not_nil @user.clocks.includes(:users, :runs => :user_runs).order("users.name").find(@clock.id)     end   end 

every test last 1 pass. not bug?

shouldn't be

user.clocks.find_by_id(params[:id], :include => [:users, {:runs => :user_runs}]) 

?