activerecord - Rails tip - "Use model association" -

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so, i've read in book tip "use model association", encourages developers use build methods instead of putting ids via setters.

assume have multiple has_many relationships in model. what's best practise creating model ?

for example, let's have models article, user , group.

class article < activerecord::base   belongs_to :user   belongs_to :subdomain end  class user < activerecord::base   has_many :articles end  class subdomain < activerecord::base   has_many :articles end

and articlescontroller:

class articlescontroller < applicationcontroller   def create     # let's have methods current_user returns current user , current_subdomain gets current subdomain     # so, need here way set subdomain_id current_subdomain.id , user_id current_user.id     @article = current_user.articles.build(params[:article])     @article.subdomain_id = current_subdomain.id     # or dogbert's suggestion     @article.subdomain = current_subdomain     @article.save   end end

is there cleaner way ?

thanks!

this should little cleaner.

@article.subdomain = current_subdomain

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