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Customising the CMS

SilverStripe Forums » Customising the CMS » CMS popup form validation problem

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

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  • splatEric
    Community Member
    15 Posts

    CMS popup form validation problem Link to this post


    I've been trawling across the forums etc today, piecing together information to enable me to be able to validate field entries when editing them in a pop up. I've been able to do this (code for reference is below). However, the problem I am experiencing is that when the validation fails, all the form fields are reset to their default (empty) values. Is there any way of patching the validation process to avoid this. It seems to happen whether I create my own custom validator (as shown below), or if I use the RequiredFields validator.

    any help much appreciated.



    class PayPalPayment extends DataObject {
       static $db = array(
          'PaymentType'    => "Enum('One-off payment,Regular payment')",
          'Label'         => 'Varchar(127)',
          'Amount'    => 'Currency',
       static $has_one = array(
          'PageOwner' => 'DonationPage',
       public function getCMSFields_forPopup() {
          $fields = new FieldSet();
           new DropDownField(
           'Type of payment',
           ) );
          $fields->push( new TextField( 'Label', 'Payment description' ) );
          $fields->push( new NumericField( 'Amount', 'Value (┬ús)' ) );
          return $fields;

    class PayPalPayment_Validator extends RequiredFields {

    protected $customRequired = array('Label');

    public function __construct() {
    $required = func_get_args();
    if(isset($required[0]) && is_array($required[0])) {
    $required = $required[0];
    $required = array_merge($required, $this->customRequired);


    function php($data) {
    $valid = parent::php($data);

    $payment_type = $data['PaymentType'];
    $value = $data['Amount'];

    if ( in_array($payment_type, array("Regular payment")) ) {
    if (!$value) {
    $message = sprintf('Need a value for payment type of %s', strtolower($payment_type));
             $valid = false;
    return $valid;

    and then with the owner ...

    class DonationPage extends Page {
       static $has_many = array(
          'Donations'   => 'PayPalPayment',
       function getCMSFields() {
          $fields = parent::getCMSFields();
          $tablefield = new DataObjectManager(
                'PaymentType'   => 'Type of payment',
                'Label'   => 'Description',
          $tablefield->popupClass = 'PayPalPaymentDataObjectManager_Popup';
          $tablefield->setAddTitle( 'a Donation');
          $fields->addFieldToTab( 'Root.Content.Donations', $tablefield);
          return $fields;

    class DonationPage_Controller extends Page_Controller {

    This bit is here to add the appropriate validator to the pop up form in the cms
    class PayPalPaymentDataObjectManager_Popup extends DataObjectManager_Popup {
    function __construct($controller, $name, $fields, $validator, $readonly, $dataObject) {
    parent::__construct($controller, $name, $fields, $validator, $readonly, $dataObject);
    $validator = new PayPalPayment_Validator();
    $this->validator = $validator;

  • swaiba
    Forum Moderator
    1796 Posts

    Re: CMS popup form validation problem Link to this post

    I'm not that familiar with DOM, but normally for an SS form add this to the rendering of the form...

    if($data = Session::get('PreviousFormsData')) {

    then add this to the part that validates...


    //and if success clear


    that is what I know, I'd advise asking in the dataobjectmanager section as it is an external module and the code you have would work fine within ModelAdmin (core code) I think...


  • splatEric
    Community Member
    15 Posts

    Re: CMS popup form validation problem Link to this post

    Thanks Barry, I've cross posted over to the DOM forum here

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