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Customising the CMS /

Moderators: martimiz, Sean, Ed, biapar, Willr, Ingo, swaiba

Problems adding new content field

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3 Posts   1948 Views


Community Member, 2 Posts

14 October 2016 at 11:11am

Edited: 14/10/2016 11:16am

Hi, all.

I'm new to SilverStripe (v3.4.1) and I'm struggling to add a new HTML field to the database and the CMS. I've watched a number of UncleCheese lessons, followed a couple of tutorials and read a number of posts. I thought I had it figured out but it's simply not working for me. I'm trying to add another HTML text field to the content tab of the page editor. It's to allow me to separate out banner content, so I'd ideally like it to appear immediately above the 'Content' window (although I haven't got as far as working out the display order!).

After I add the relevant code to Page.php and flush by appending /db/build?flush=1 to my URL, the page edit area in the CMS is completely blank. Just the CMS menu on the left and nothing else. This is the top of my Page.php file...

class Page extends SiteTree {

	private static $db = array(
		'Banner' => 'HTMLText'

	private static $has_one = array(

	public function getCMSFields() {
		$fields = parent::getCMSFields();
		$fields->addFieldToTab("Root.Content", new HTMLEditorField('Banner','Banner'));
		return $fields;


I've also tried "Root.Main" and "Root.Content.Main" to no avail. What am I missing? Please help!



Community Member, 17 Posts

18 October 2016 at 11:27am


The code you wrote looks fine. The correct tab to add the field to is "Root.Main". Also you can pass "Content" as the third parameter to make the field appear before it. I.e...

$fields->addFieldToTab("Root.Main", new HTMLEditorField('Banner','Banner'), 'Content');

The blank white screen must mean there is some sort of error. Have you tried looking in / tailing the apache or nginx error log? Perhaps take a look at this thread about the "blank screen" issue:


Community Member, 60 Posts

20 October 2016 at 6:12pm

Edited: 20/10/2016 6:14pm

Hello, not sure if it was a typo or not but instead of:

appending /db/build?flush=1

You need to append /dev/build?flush=1 (or flush=all)

Also make sure you have:


In your config file to make sure all error messages are being shown.