Silverstripe：无法使用自定义路径访问控制器中的页面字段

Question

I'm using SilverStripe 3.3.1 and have a custom route set up to handle urls with many parameters. That works.

However, the routing rule causes Page fields and functions to be inaccessible in the Page_Controller and templates. Any ideas how to fix this?

//MyPage class
class MyPage extends Page {

    //Not accessible if route to controller specified in config.yml
    private static $db = array(
        'MyPageVar' => 'Int',
    );

     //Not accessible if route to controller specified in config.yml
     public function getMySpecialVar() {
         return $this->MyPageVar;
     } 
}

//MyPage_Controller class
class MyPage_Controller extends Page_Controller {

    private static $allowed_actions = array(
        'index',
        'detailsearch',
    );

    private static $url_handlers = array (
        'detailsearch/$Key1/$Value1/$Key2/$Value2/$Key3/$Value3/$Key4/$Value4/$Key5/$Value5' => 'detailsearch',
    );


    /**
     * UseMyPageVar() 
     * 
     * @return Boolean
     */
    public function UseMyPageVar() {
        //Empty if route to controller specified in config.yml
        Debug::show($this->MyPageVar);
        Debug::show($this->Title);
        Debug::show($this->Content);
        //Error if route to controller specified in config.yml
        Debug::show($this->getMySpecialVar());

        return true;
    }
}

MyPage.ss

<!-- This work as expected if no route is specified. -->
<!-- But all vars are empty if route is specified in config.yml -->
<p>MyVar: $MyPageVar</p>
<p>Title: $Title</p>
<p>Content: $Content</p>

Routing rule in config.yml

Director:
  rules:
    'mypage': 'MyPage_Controller'

This question is also posted on the Silverstripe forum: http://www.silverstripe.org/community/forums/general-questions/editpost/413506

Answer 1

It's not pretty, but for now I've solved the problem by using a private var in the Controller class to hold a reference to the page.

//MyPage_Controller class
class MyPage_Controller extends Page_Controller {

    private $_page; //reference to page that's lost with custom routing        

    //ContentController uses route, which has been changed to
    //   'MyPage_Controller' by routing rule, to initialize 
    //   page reference. Can't find anything so reference
    //   not set. (set to -1)
    public function init() {
        parent::init();

        //Initialize using default route overwritten in routing rule
        //    This will break if URL segment changed in CMS  
        $route = array_search($this->URLSegment,
                        Config::inst()->get('Director', 'rules'));
        $link = str_replace($this->URLSegment, $route, $this->Link());
        $this->_page = $this->Page($link);
    }


    //Use private var to access page fields 
    public function MyPageVar() {  
        Debug::show($this->_page->MyPageVar);
    }

    //expose $Content to templates
    public function Content() {
        return $this->_page->Content;
    }

    //Can't use Title() so expose Page Title as $PageTitle
    public function PageTitle() {
        return $this->_page->Title;
    }
}