Skip to main content

This site requires you to update your browser. Your browsing experience maybe affected by not having the most up to date version.

General Questions /

General questions about getting started with SilverStripe that don't fit in any of the categories above.

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

Pagination questions

Go to End

2 Posts   1313 Views

Dave L

Community Member, 60 Posts

10 December 2009 at 6:59pm

So far I'm tracking the "current" item in a paginated DataObjectSet manually, I'm wondering if there's a better way to do this. I.e. access the iterator for a DataObjectSet attached to a Page.


simple gallery:

Page with has_many Images

page 1
- image 1
- image 2
- image 3
- image 4

page 2
- image 5
- image 6
- image 7
- image 8

page 3
- image 9
- image 10
- image 11
- image 12

Each page shows the "current" image, plus paginated thumbnails. Each thumbnail updates "current" to the selected thumbnail. I.e. page/showImage/7

I can paginate fine, showing thumbnails, using the standard pagination examples. To ensure the current page is not reset when I click the thumbnail on page 2 or 3 I need to pass the start (paginator) param, generated from my controller. I.e. page/showImage/7?start=5


  function CurrentPageLink() {
    if(!isset($_GET['start']) || !is_numeric($_GET['start']) || (int)$_GET['start'] < 1) $_GET['start'] = 0;
    return $_GET['start'];  



To keep track of "current" I have a variable in my controller, which updates the ID when a new ID is passed in, then gets the object via DataObject::get(). Is there a better way to do this? Ideally I'd like iterator access "built-in". I.e. to get the "current" Image:


function CurrentImage() {
  return $this->Images()->Current();

instead of:


function CurrentImage() {
    if($this->currentImage) {
       return $this->currentImage;
    } else {
       $this->currentImage = DataObject::get_one("Image", "GalleryPageID = $this->ID"); //get first image attached to page
       return $this->currentImage;

Am I missing something here? The reason I ask, is that accessing iteration via the DataObjectSet opens up Next(), Prev(), etc. objects. If I try to access $this->Images()->Current() I simply get [User Error] Uncaught Exception: Object->__call(): the method 'current' does not exist on 'ComponentSet'. Even though ComponentSet is a subclass of DataObjectSet, which has a current() method, it's not available. Because it does not have an iterator attached? If someone could help explain it'd be great.


Dave L

Community Member, 60 Posts

10 December 2009 at 11:08pm


how can I paginate a set 4 at a time yet also paginate individual items?

<< item 7 >>

<< item 5, item 6, item 7, item 8 >>