如何在Rails中覆盖路由路径助手？ [英] How to override routes path helper in rails?

问题描述

我的路线是这样定义的

match '/user/:id' => 'user#show', :as => :user

如果由于某种原因传递了nil ID，我希望路由助手仅返回'＃ '，如果ID不为零，我希望它返回正常路径，例如'/ user / 123'。
还是有更好的方法来做到这一点。
这个路由助手已经在我的代码中很多地方使用过，所以我不想更改它。相反，我正在寻找一个将影响所有user_path实例的地方。

If for some reason a nil ID is passed I want the route helper to return only '#' and if ID is not nil i want it to return normal path like '/user/123'. or is there any better way to do it. this route helper has been used in lot of places in my code so I dont want to change that. Instead I am looking for one place which will effect all instances of user_path.

谢谢

推荐答案

module CustomUrlHelper
  def user_path(user, options = {})
    if user.nil?
      "#"
    else
      super
    end
  end
end

# Works at Rails 4.2.6, for older versions try http://stackoverflow.com/a/31957323/474597
Rails.application.routes.named_routes.url_helpers_module.send(:include, CustomUrlHelper)

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