rails 3 habtm delete only association

Question

class Company
  has_and_belongs_to_many :users
end

class User
  has_and_belongs_to_many :companies
end

when i delete a company, what\'s the best (

Answer 1

http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html#method-i-has_and_belongs_to_many

collection.delete will do the trick.