gistfile1.txt

class NewsletterExtension extends DataExtension {

    private static $media_upload_folder = "properties";

    /**
     * List of database fields. {@link DataObject::$db}
     *
     * @var array
     */
    private static $db = array(
        'EmailPropertyType' => "Enum('Sales, Lettings, Both', 'Sales')",
        'EmailType' => "Enum('Single Property, All Properties, Message', 'Single Property')"
    );

    /**
     * Return extra fields
     */
    public function updateCMSFields(FieldList $fields) {

        switch ($this->owner->EmailType){
            case "Single Property":
                $properties = $this->ZooplaPropertyList();
                $fields->push(DropdownField::create('PropertyField', 'Choose Property', $properties->map('listing_id', 'titleField')));
                break;
            case "All Properties":
                $properties = $this->ZooplaPropertyList();
                $fields->push(CheckboxSetField::create('PropertyField', 'Choose Property', $properties->map('listing_id', 'titleField')));
                break;
            default:
                break;
        }
    }