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.

use SilverStripe\Core\Extension;

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

Now enable this extension through your [config.yml](/topics/configuration) file.

    - MyAdminExtension

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