Epigene · July 29, 2017 19:40
diff --git a/get a query object.rb b/get a query object.rb
 last_post_ids = []
 User.where(id: Post.all.distinct.pluck(:user_id)).find_each |user|
  last_post_ids << user.posts.order(created_at: :desc).limit(1).pluck(:id).last
 end

 last_posts = Post.where(id: last_post_ids).order(created_at: :desc)
	last_post_ids = []
	User.where(id: Post.all.distinct.pluck(:user_id)).find_each \|user\|
	last_post_ids << user.posts.order(created_at: :desc).limit(1).pluck(:id).last
	end

	last_posts = Post.where(id: last_post_ids).order(created_at: :desc)