更新

lib/tasks/shixuns.rake

@@ -14,7 +14,7 @@ namespace :shixuns do
         puts "game_id: #{game.id}"
         cost_time = game.end_time.to_i - game.open_time.to_i
         puts "cost_time: #{cost_time}"
-        game.update_column!(:cost_time, cost_time)
+        game.update_attributes!(cost_time: cost_time)
       end
     end