ruby on rails 3 - Why include? gives me wrong results in Rails3? -

i guess i'm doing wrong... i've got 2 models in rails3:

• user
• container

each container has multiple users , need test whether specific user belongs specific container.

user.rb

has_many :user_containers has_many :containers, :through => :user_containers 

container.rb

has_many :user_containers has_many :users, :through => :user_containers 

---

i wrote helper should test user's "membership", returns false:

 def allow_access?(container, user)    container.users.include?(user)  end 

however, running in rails console just

container.users.include?(user) 

returns correctly true... missing something?

thanks