问题：
Rails defines a bunch of magic with named routes that make helpers for your routes. Rails 定义了一堆带有命名路由的魔法，它们为你的路由提供帮助。 Sometimes, especially with nested routes, it can get a little confusing to keep track of what URL you'll get for a given route helper method call.有时，尤其是对于嵌套路由，跟踪给定路由辅助方法调用将获得的 URL 可能会有些混乱。 Is it possible to, using the Ruby console, see what link a given helper function will generate?是否可以使用 Ruby 控制台查看给定的辅助函数将生成什么链接？ For example, given a named helper like post_path(post) I want to see what URL is generated.例如，给定一个像 post_path(post) 这样的命名助手，我想看看生成了什么 URL。
解决方案：
参考一： https://en.stackoom.com/question/BwRD参考二： https://stackoom.com/question/BwRD