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DataObjectManager Module /

Discuss the DataObjectManager module, and the related ImageGallery module.

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

[SOLVED] write a xml file - OnAfterWrite


19 Posts   4557 Views


Community Member, 267 Posts

18 March 2011 at 2:26am

Edited: 18/03/2011 2:27am

@Banal, i will check your method in a sec..

for now it is solved. I didnt used the template because it was not working. and when viewing online (with the public function) <img> tags were closed by a slash <img height="567" />
this was illegal for the xml, so another reason to NOT use a template for xml.

example can be found here (temporary):

for the people who wan to know how i did it:

class Flyer extends Page {
   static $has_many = array (
      'FlyerPaginas' => 'FlyerPagina'
   public function getCMSFields() {
$fields = parent::getCMSFields();
$manager = new FileDataObjectManager(
'FlyerPaginas', // relation name
'FlyerPagina', // class name of the DataObject
'Image', // name of the file relation in the DataObject
          'Title' => 'Title',
         // 'Comment' => 'Comment',
       ), // headings
'getCMSFields_forPopup' // name of the function for the popup fields

   $fields->addFieldToTab('Root.Content.Images', $manager);
return $fields;

   public function onAfterWrite(){
      $dom = new DomDocument('1.0');
      $implementation = new DOMImplementation();
      $dtd = $implementation->createDocumentType('xml',
            'DOCTYPE book SYSTEM',
      $dom = $implementation->createDocument('', '', $dtd);
      $book = $dom->appendChild($dom->createElement('book'));
      $plugins = $book->appendChild($dom->createAttribute('plugins'));
      $plugins2 = $plugins->appendChild($dom->createTextNode('zoom, keyboardnavigation, navigationbar, swfaddress'));
      $pagewidth = $book->appendChild($dom->createAttribute('pagewidth'));
      $pagewidth2 = $pagewidth->appendChild($dom->createTextNode('567'));
      $pageheight = $book->appendChild($dom->createAttribute('pageheight'));
      $pageheight2 = $pageheight->appendChild($dom->createTextNode('567'));
      $lang = $book->appendChild($dom->createAttribute('lang'));
      $lang2 = $lang->appendChild($dom->createTextNode('en'));
      $zoomminscale = $book->appendChild($dom->createAttribute('zoomminscale'));
      $zoomminscale2 = $zoomminscale->appendChild($dom->createTextNode('0.5'));
      $zoommaxscale = $book->appendChild($dom->createAttribute('zoommaxscale'));
      $zoommaxscale2 = $zoommaxscale->appendChild($dom->createTextNode('2.0'));
      $zoomsnap = $book->appendChild($dom->createAttribute('zoomsnap'));
      $zoomsnap2 = $zoomsnap->appendChild($dom->createTextNode('0.5, 1.0, 1.5, 2.0'));
      $zoomsteps = $book->appendChild($dom->createAttribute('zoomsteps'));
      $zoomsteps2 = $zoomsteps->appendChild($dom->createTextNode('0.5'));
      $dragrange = $book->appendChild($dom->createAttribute('dragrange'));
      $dragrange2 = $dragrange->appendChild($dom->createTextNode('20'));
      $qualitycontrol = $book->appendChild($dom->createAttribute('qualitycontrol'));
      $qualitycontrol2 = $qualitycontrol->appendChild($dom->createTextNode('true'));
      $thumbscale = $book->appendChild($dom->createAttribute('thumbscale'));
      $thumbscale2 = $thumbscale->appendChild($dom->createTextNode('0.35'));
      $cornerhint = $book->appendChild($dom->createAttribute('cornerhint'));
      $cornerhint2 = $cornerhint->appendChild($dom->createTextNode('true'));
      $pagethickness = $book->appendChild($dom->createAttribute('pagethickness'));
      $pagethickness2 = $pagethickness->appendChild($dom->createTextNode('0.1'));
      $shadows        = $book->appendChild($dom->createAttribute('shadows'));
      $shadows2        = $shadows->appendChild($dom->createTextNode('0.3'));
      $startpage     = $book->appendChild($dom->createAttribute('startpage'));
      $startpage2     = $startpage->appendChild($dom->createTextNode('1'));
      $centercovers     = $book->appendChild($dom->createAttribute('centercovers'));
      $centercovers2    = $centercovers->appendChild($dom->createTextNode('false'));
      $pageoffset     = $book->appendChild($dom->createAttribute('pageoffset'));
      $pageoffset2    = $pageoffset->appendChild($dom->createTextNode('0'));

      $chapter = $book->appendChild($dom->createElement('chapter'));
      foreach($this->FlyerPaginas() as $FlyerPagina) {
         $page = $chapter->appendChild($dom->createElement('page'));
         $img = $page->appendChild($dom->createElement('img'));
         $width = $img->appendChild($dom->createAttribute('width'));
         $width2 = $width->appendChild($dom->createTextNode('567'));
         $height = $img->appendChild($dom->createAttribute('height'));
         $height2 = $height->appendChild($dom->createTextNode('567'));
         //Zoom level 0,5
         $src1 = $img->appendChild($dom->createElement('src'));
         $scaleA = $src1->appendChild($dom->createAttribute('scale'));
         $scaleB = $scaleA->appendChild($dom->createTextNode('0.5'));
         $src1 ->appendChild(
         //Zoom level 0,75
         $src5 = $img->appendChild($dom->createElement('src'));
         $scaleX = $src5->appendChild($dom->createAttribute('scale'));
         $scaleY = $scaleX->appendChild($dom->createTextNode('0.75'));
         $src5 ->appendChild(
         //Zoom level 1,0
         $src2 = $img->appendChild($dom->createElement('src'));
         $scaleC = $src2->appendChild($dom->createAttribute('scale'));
         $scaleD = $scaleC->appendChild($dom->createTextNode('1.0'));
         $src2 ->appendChild(
         //Zoom level 1,5
         $src3 = $img->appendChild($dom->createElement('src'));
         $scaleE = $src3->appendChild($dom->createAttribute('scale'));
         $scaleF = $scaleE->appendChild($dom->createTextNode('1.5'));
         $src3 ->appendChild(
         //Zoom level 2,0
         $src4 = $img->appendChild($dom->createElement('src'));
         $scaleG = $src4->appendChild($dom->createAttribute('scale'));
         $scaleH = $scaleG->appendChild($dom->createTextNode('2.0'));
         $src4 ->appendChild(

      //generate xml
      $dom->formatOutput = true; // set the formatOutput attribute of
                        // domDocument to true
      // save XML as string or file
      $test1 = $dom->saveXML(); // put string in test1
      $dom->save('megazine.mz3'); // save as file - add absolute path

class Flyer_Controller extends Page_Controller {

class FlyerPagina extends DataObject {
   static $db = array (
      'Title' => 'Text',
   //   'Comment' => 'HTMLText',
   static $has_one = array (
      'Image' => 'Image',
      'Flyer' => 'Flyer'
   public function getCMSFields_forPopup() {
      $fields = new FieldSet();
      $fields->push(new TextField('Title'));
      //$fields->push(new SimpleTinyMCEField('Comment'));
      $fields->push(new FileUploadField('Image','Upload files'));
      return $fields;


Community Member, 901 Posts

18 March 2011 at 2:59am

I use templates to output XML code all the time. You can create valid image tags yourself and use $Image.Link to just get the src part..

Also writing to files never was an issue... here's a flash page that's driven by SilverStripe and uses exactly this (templates for xml generation and caching to files):


Community Member, 1 Post

9 July 2011 at 10:12pm

I managed to do something similar to what you wanted to do originally through onAfterWrite(). Since your onAfterWrite() is in the FlyerPagina DataObject, when $this->renderWith() is called, the FlyerPagina object is the the root object. This means that <% control FlyerPagina %> attempts to descend into the FlyerPagina object when it is already at that object level. Instead, <% control Me %> needs to be used in place of <% control FlyerPagina %> so the control stays at the top level. From there the FlyerPagina object variables are accessible using the $ prefix as with any other template. This fix also applies to DataObjectSets that call renderWith(), which is what I ended up using to save a file containing data from all the DataObjects with that class type.

What I find odd is that I needed to force a theme setting in the onAfterWrite() method in the DataObject I have using SSViewer::set_theme(). Without it, SilverStripe throws an "[User Warning] None of these templates can be found in theme" error, and calling SSViewer::current_theme() in onAfterWrite() returns null. Any ideas on this behavior?