Just one editing, - I had to use a plural form with includes as follows: users = includes(:posts)
to have eager loading of posts association for every User. On Saturday, 6 August 2016 19:10:01 UTC+2, Serguei Cambour wrote: > > I wonder what is the best way to delete all the records of the association > on a specified condition. > For example, you have User model that has many Post(s). How would keep all > the recent User's Posts and delete all the last Posts when a Users have > more than 25 ? > > There is a solution like that: > > def self.delete_old_posts > old_posts = [] > users = includes(:post) > users.each do |user| > old_posts =+ user.posts.offset(25) unless user.posts.empty? > end > > > old_posts.delete_all > end > > Any other ideas ? Thank you. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscr...@googlegroups.com. To post to this group, send email to rubyonrails-talk@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/18fdfbba-4089-4867-890d-345ff40e1447%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
