Version 5 supported

Extending existing ModelAdmin

Sometimes you'll work with ModelAdmins from other modules. To customise these interfaces, you can always subclass. But there's also another tool at your disposal: The Extension API.

namespace App\Extension;

use SilverStripe\Core\Extension;

class MyAdminExtension extends Extension
    public function updateEditForm($form)
        $form->Fields()->push(/* ... */)

Now enable this extension through your config.yml file (see the configuration documentation).

    - App\Extension\MyAdminExtension

The following extension points are available: updateEditForm(), updateSearchContext(), updateSearchForm(), updateList(), updateImportForm.