Version 4 supported
This version of Silverstripe CMS is still supported though will not receive any additional features. Go to documentation for the most recent stable version.

Import CSV data through a controller

You can have more customised logic and interface feedback through a custom controller. Let's create a simple upload form (which is used for MyDataObject instances). You can access it through

namespace App\Control;

use App\Model\MyDataObject;
use SilverStripe\Control\Controller;
use SilverStripe\Dev\CsvBulkLoader;
use SilverStripe\Forms\FieldList;
use SilverStripe\Forms\FieldsValidator;
use SilverStripe\Forms\FileField;
use SilverStripe\Forms\Form;
use SilverStripe\Forms\FormAction;

class MyController extends Controller
    private static $allowed_actions = [

    private static $url_handlers = [
        'Form' => 'getForm',

    private static $url_segment = 'my_controller';

    protected $template = 'BlankPage';

    public function getForm()
        $form = Form::create(
                FileField::create('CsvFile', false)
                FormAction::create('doUpload', 'Upload')
        return $form;

    public function doUpload($data, $form)
        $loader = CsvBulkLoader::create(MyDataObject::class);
        $results = $loader->load($_FILES['CsvFile']['tmp_name']);
        $messages = [];

        if ($results->CreatedCount()) {
            $messages[] = sprintf('Imported %d items', $results->CreatedCount());

        if ($results->UpdatedCount()) {
            $messages[] = sprintf('Updated %d items', $results->UpdatedCount());

        if ($results->DeletedCount()) {
            $messages[] = sprintf('Deleted %d items', $results->DeletedCount());

        if (!$messages) {
            $messages[] = 'No changes';

        $form->sessionMessage(implode(', ', $messages), 'good');

        return $this->redirectBack();

This interface is not secured, consider using Permission::check() to limit the controller to users with certain access rights.