On 30 December 2011 10:54, Damien Knight <[email protected]> wrote: > Hi, > > I recently changed to rails 3 and the chainability for relations(i.e. > .where(xxx).order(xxx)) > > so here's my question: can i use scopes in my includes to avoid > 1+n-query problem? > > i have: > > class A < ActiveRecord::Base > has_many :bs > end > > class B < ActiveRecord::Base > scope :auto, where('auto') # auto is a boolean > end > > now i would like to do this: > as = A.includes(:bs) > as.each do |a| > a.bs.auto #do something > end > > but of course i get 1+n queries. > in rails 2 i would add this to my A class: > has_many :bs_auto, :class_name => 'B', :conditions => 'auto' > > now when i call: > as = A.includes(:bs_auto) > as.each do |a| > a.bs_auto #do something > end > > i will get 2 queries. > > > can i do something like that with my rails 3-example and scopes? or do i > need the additional relation as well?
Are you saying you can no longer use the same code in Rails 3 or are you asking whether there is a better way to achieve the same thing? Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
