I'm kinda pulling my hair out here. I have a page type named StudentsPage.php and the following code within it:

class StudentsPage extends Page {
   static $db = array(
   
   'LeftDesc' => 'Text'
   
   );
   static $has_one = array(
   
   );
}

function getCMSFields() {
	$fields = parent::getCMSFields();
	$fields->addFieldToTab('Root.Content.Main', new TextField('LeftDesc'), 'Content');

    return $fields;
   }
 
class StudentsPage_Controller extends Page_Controller {
 
}

But no matter how much I

?flush=1

or

/db/build?flush=1

, the text field will not show up in the CMS. Is there something glaringly obvious that I'm missing?

Looks fine here - maybe your browser cache needs to be cleared too?

Yay! I finally figured it out. My getCMSFields() was not inside the StudentsPage class. Maybe this could be made a bit more clear in the tutorial? I'm not sure if the tutorial explicitly says this or not.