下面的代码来自评论控制器。第 3 行中的“哦”在做什么?
@offer = Offer.find(params[:offer_id])
@offer_comment = @offer.offer_comments.build(params[:offer_comment])
@offer_comment.commenter oh = current_user
@offer_comment.save!
Notify::offer_comment_create(@offer_comment)
@offer.update_attribute(:read, false) if @offer.read? and current_user == @offer.offerer