迁移测试

lib/tasks/hjq_test.rake

@@ -0,0 +1,16 @@
+namespace :hjq do
+  namespace :news do
+    desc "news order"
+    task :users => :environment do
+      a = []
+      news = News.where("course_id =?", 122)
+      news.each do |new|
+        unless new.comments.blank?
+          new = new.comments.sort! { |a,b| a.created_on <=> b.created_on}.last.commented
+        end
+        a << new
+      end
+      puts a.length
+    end
+  end
+end