rails中的“to_param”问题

I have a page model that I want to find by a handle that I create from the title.

我有一个页面模型，我想通过从标题中创建的句柄找到它。

class Page < ActiveRecord::Base
  belongs_to :user

  validates_presence_of :title

  def to_param
    handle
  end

  def self.make_url_safe(string)
    handle = string.titleize.gsub(/ /,'').underscore.dasherize[0..35] 
    "#{handle}/" 
  end

end

In my controller, I have:

在我的控制器中，我有:

def show
    @page = Page.find_by_handle(params[:id])
 end

I'm doing the same thing with another model and it's working fine, but not with Page. I keep getting this error:

我正在用另一个模型做同样的事情，它运行得很好，但不是在页面上。我一直得到这个错误:

ActiveRecord::RecordNotFound in
PagesController#show

Couldn't find Page with ID=test

Where test is the handle of the page. I feel like it was working just a few days ago when I created the model, so not sure what could've changed to cause the problem. Maybe the trailing /?

测试是页面的句柄。我感觉就在几天前我创建模型的时候，它还在工作，所以我不确定是什么原因导致了这个问题。也许落后/ ?

Here's the log:

日志:

Started GET "/pages/test" for 127.0.0.1 at 2011-05-28 11:53:49 -0400
  Processing by PagesController#show as HTML
  Parameters: {"id"=>"test"}
  Page Load (0.2ms)  SELECT "pages".* FROM "pages" WHERE ("pages"."id" = 0) LIMIT 1
Completed   in 12ms

ActiveRecord::RecordNotFound (Couldn't find Page with ID=test):

1 个解决方案

#1

I'll post an answer, though it was given in the comment above: CanCan interferes with to_param -- the solution is to authorize each resource in the controller, instead of using the generic load_and_authorize_resources.

我将发布一个答案，尽管上面的注释给出了答案:CanCan干扰to_param——解决方案是授权控制器中的每个资源，而不是使用常规的load_and_authorize_resources。