/**
* Gets presentations, ordered in a persistent random fashion
*
* @return DataList
*/
public function getRandomisedPresentations($category_id = null, $summit = null)
{
$mid = Member::currentUserID();
if (!$summit) {
$summit = Summit::get_active();
}
$priority = $this->owner->VotingList();
if (!$priority->exists() || $priority->SummitID != $summit->ID) {
$priority = PresentationRandomVotingList::get()->filter('SummitID', $summit->ID)->sort('RAND()')->first();
if (!$priority) {
return false;
}
$this->owner->VotingListID = $priority->ID;
$this->owner->write();
}
$list = $priority->getPriorityList();
if (!count($list)) {
return false;
}
$presentations = $summit->VoteablePresentations()->sort("FIND_IN_SET(Presentation.ID, '" . implode(',', $list) . "')");
if (!empty($category_id) && intval($category_id) > 0) {
$presentations = $presentations->filter('CategoryID', $category_id);
}
return $presentations;
}
public function generateVotingLists()
{
DB::query("DELETE FROM PresentationRandomVotingList");
$i = 0;
while ($i < self::config()->random_voting_list_count) {
$list = PresentationRandomVotingList::create(['SummitID' => $this->ID]);
$list->setSequence($this->VoteablePresentations()->sort('RAND()')->column('ID'));
$list->write();
$i++;
}
}
public function testSummitVotingListIdempotence()
{
$s = Summit::get_active();
$s->generateVotingLists();
$s->generateVotingLists();
$this->assertEquals($s->config()->random_voting_list_count, PresentationRandomVotingList::get()->count());
$member = $this->objFromFixture('Member', 'unclecheese');
$member->flushCache();
$member->getRandomisedPresentations(null, $s);
$this->assertTrue($member->VotingList()->exists());
$oldID = $member->VotingListID;
$s->generateVotingLists();
$member->flushCache();
$member->getRandomisedPresentations(null, $s);
$this->assertNotEquals($oldID, $member->VotingListID);
}