在Rails中，使用check_box_tag，如何在提交查询后保留选中的复选框?

Ok, I know this is for the Saas course and people have been asking questions related to that as well but i've spent a lot of time trying and reading and I'm stuck. First of all, When you have a model called Movie, is it better to use Ratings as a model and associate them or just keep Ratings in an array floating in space(!). Second, here's what I have now in my controller:Ok, I know this is for the Saas course and peop