SilverStripe Prev / Next Controls

silverstripe-prev-next.php

public function PrevNextPage($Mode = 'next') {

	if($Mode == 'next'){
      		return SiteTree::get()->filter(array("ParentID" => $this->ParentID, "Sort:GreaterThan" => $this->Sort))->sort("Sort ASC")->limit(1)->first();
	}
	elseif($Mode == 'prev'){
      		return SiteTree::get()->filter(array("ParentID" => $this->ParentID, "Sort:LessThan" => $this->Sort))->sort("Sort DESC")->limit(1)->first();
	}
	else{
		return false;
	}

}

@pinkp
To avoid the "Previous" button on the first page a and "Next" at the last:

<% if Parent && $ChildrenOf($Parent.URLSegment).count > 1 %> <div> <% if $Sort > 1 %> <% loop PrevNextPage(prev) %> <a href="$Link">&lt; Previouse</a> <% end_loop %> <% end_if %> <% if $Sort < $ChildrenOf($Parent.URLSegment).count %> <% loop PrevNextPage(next) %> <a href="$Link">Next &gt; </a> <% end_loop %> <% end_if %> </div> <% end_if %>