How to create a paginated list
In order to create a paginated list, create a method on your controller that first creates a SS_List that contains
all your record, then wraps it in a PaginatedList object. The PaginatedList object should also passed the
HTTPRequest object so it can read the current page information from the "?start=" GET var.
The PaginatedList will automatically set up query limits and read the request for information.
// app/src/PageType/MyPageController.php
namespace App\PageType;
use Page;
use PageController;
use SilverStripe\ORM\PaginatedList;
class MyPageController extends PageController
{
// ...
/**
* Returns a paginated list of all pages in the site.
*/
public function getPaginatedPages()
{
$list = Page::get();
return PaginatedList::create($list, $this->getRequest());
}
}Note that the concept of "pages" used in pagination does not necessarily mean that we're dealing with Page classes,
it's just a term to describe a sub-collection of the list.
There are two ways to generate pagination controls: PaginatedList::Pages() and
PaginatedList::PaginationSummary(). In this example we will use PaginationSummary().
The first step is to simply list the objects in the template:
<%-- app/templates/App/PageType/Layout/MyPage.ss --%>
<ul>
<% loop $PaginatedPages %>
<li><a href="$Link">$Title</a></li>
<% end_loop %>
</ul>By default this will display 10 pages at a time. The next step is to add pagination controls below this so the user can switch between pages:
<%-- app/templates/App/PageType/Layout/MyPage.ss --%>
<% if $PaginatedPages.MoreThanOnePage %>
<% if $PaginatedPages.NotFirstPage %>
<a class="prev" href="$PaginatedPages.PrevLink">Prev</a>
<% end_if %>
<% loop $PaginatedPages.PaginationSummary %>
<% if $CurrentBool %>
$PageNum
<% else %>
<% if $Link %>
<a href="$Link">$PageNum</a>
<% else %>
...
<% end_if %>
<% end_if %>
<% end_loop %>
<% if $PaginatedPages.NotLastPage %>
<a class="next" href="$PaginatedPages.NextLink">Next</a>
<% end_if %>
<% end_if %>If there is more than one page, this block will render a set of pagination controls in the form
[1] ... [3] [4] [5] [6] [7] ... [10].
Paginating custom lists
In some situations where you are generating the list yourself, the underlying list will already contain only the items that you wish to display on the current page. In this situation the automatic limiting done by PaginatedList will break the pagination. You can disable automatic limiting using the PaginatedList::setLimitItems() method when using custom lists.
use SilverStripe\ORM\PaginatedList;
$myPreLimitedList = Page::get()->limit(10);
$pages = new PaginatedList($myPreLimitedList, $this->getRequest());
$pages->setLimitItems(false);Setting the limit of items
$pages = new PaginatedList(Page::get(), $this->getRequest());
$pages->setPageLength(25);If you set this limit to 0 it will disable paging entirely, effectively causing it to appear as a single page list.
Template variables
| Variable | Description |
|---|---|
$MoreThanOnePage | Returns true when we have a multi-page list, restricted with a limit. |
$NextLink, $PrevLink | They will return blank if there's no appropriate page to go to, so $PrevLink will return blank when you're on the first page. |
$CurrentPage | Current page iterated on. |
$TotalPages | The actual (limited) list of records, use in an inner loop |
$FirstItem | Returns the number of the first item being displayed on the current page. This is useful for things like “displaying 10-20”. |
$LastItem | Returns the number of the last item being displayed on this page. |
$TotalItems | This returns the total number of items across all pages. |
$Pages | Total number of pages. |
$PageNum | Page number, starting at 1 (within $Pages) |
$Link | Links to the current controller URL, setting this page as current via a GET parameter |
$FirstPage | Returns true if you're currently on the first page |
$LastPage | Returns true if you're currently on the last page |
$CurrentBool | Returns true if you're currently on that page |