Table YoutubePage: renamed to _obsolete_YoutubePage
Table YoutubePage_versions: renamed to _obsolete_YoutubePage_versions
Table YoutubePage_Live: renamed to _obsolete_YoutubePage_Live

<?php
class YoutubePage extends Page
{
static $db = array(
#'YoutubeLink' => 'Text'
);
static $has_one = array(
);
}

class YoutubePage_Controller extends Page_Controller
{
function getCMSFields() {
$fields = parent::getCMSFields();
$fields->addFieldToTab('Root.Content.Main', new TextField('YoutubeLink'), 'YoutubeLink');
return $fields;
}
}
?>

#'YoutubeLink' => 'Text'

That's a parse error (#). Why is it there?

And if you want help, it's a good idea to explain:

1. What you are trying to do
2. What error you are getting

Cheers
Aaron

sorry, I want to add some costom fields, but there is no effect.

So now you're alright then? You see the problem?

no,it is not alright. the page's Main tag still do not display the field I want.

Then why did you set the subject to [solved]?

You need to be more detailed with your questions. I have pointed out the error in the code you posted.

Cheers
Aaron

After I posted my second topics, I found I add the mehtod to the wrong class, so the error is fixed. Thanks for your attending.