Pimcore: Retrieve Single Object List by Multiple Class Types - custom-lists

Question

I currently have a controller that pulls objects from the Pimcore Objects exactly how the sample data demonstrated.
What we need to accomplish with this build, is to allow for a "Featured" category to be assigned to any NewsArticle object or EventsArticle object. We need to pull a combined list from both NewsArticle and EventsArticle objects that also have the Featured category assigned to them. We need to keep track of all the IDs returned in this list, and exclude them from the single track lists so that they aren't displayed twice on the same page.
These are our two single track lists which work as expected, limited by custom properties that live on the document.
Requirements:
Filter by featured category.
Prevent any post from being listed twice.
Able to sort by date asc or desc.
// TODO: List Featured News and Events Objects...
// $this->view->featured = $featuredList->getObjects();
// List News Objects...
$newsList = new Object\NewsArticle\Listing();
$newsList->setOrderKey( "date" );
$newsList->setOrder( "DESC" );
$newsList->setLimit( $this->document->getProperty( 'newsLimit' ) );
// TODO: Exclude any IDs in $this->view->featured
$this->view->news = $newsList->getObjects();
// List Events Objects...
$eventsList = new Object\EventsArticle\Listing();
$eventsList->setOrderKey( "date" );
$eventsList->setOrder( "DESC" );
$eventsList->setLimit( $this->document->getProperty( 'eventsLimit' ) );
// TODO: Exclude any IDs in $this->view->featured
$this->view->events = $eventsList->getObjects();

Answer 1

This approach will give you the featured list:
$featuredListObj = \Pimcore\Model\Object::getByPath("featured-list");
$featuredListObjId = $featuredListObj->getId();
$eventClassId = \Pimcore\Model\Object\ClassDefinition::getByName("news")->getId();
$newsClassId = \Pimcore\Model\Object\ClassDefinition::getByName("event")->getId();
$combinedListing = new Pimcore\Model\Object\Listing();
$combinedListing->setCondition("o_className IN ('event','news') AND o_id IN (
SELECT o_id FROM object_$eventClassId WHERE categories LIKE '%,$featuredListObjId,%'
UNION SELECT o_id FROM object_$newsClassId WHERE categories LIKE '%,$featuredListObjId,%'
)");
foreach ($combinedListing as $item) {
echo get_class($item) . "<br>";
}

Answer 2

After some toil I've figured out a way to do this. It may not be optimal, but it works and gets the job done.
The reason why I've found this way to be most effective is because setCondition will also check non-target classes for columns they might not have, causing the list to fail.
#
# Hybridized Featured Articles List
#
# Get News and Events Objects...
$hybridList = new Object\Listing();
$hybridList->setCondition( "o_className IN ( 'newsArticle', 'eventsArticle' )" );
# Get a list of IDs for News and Events that have the "featured" category...
$featuredList = array();
foreach( $hybridList->getObjects() as $obj ) {
foreach( $obj->categories as $obj_cat ) {
if( $obj_cat->o_key == 'featured' ) {
$key = strtotime( $obj->date->date );
$key .= str_pad( $obj->o_id, 8, "0", STR_PAD_LEFT );
$featuredList[ $key ] = $obj;
break;
}
}
}
# Sort and Slice the list...
if( $this->document->getProperty( 'featuredSort' ) == 'asc' ) {
ksort( $featuredList ); // Oldest First
} else {
krsort( $featuredList ); // Newest First
}
$this->view->featured = array_slice( $featuredList, 0, $this->document->getProperty( 'featuredLimit' ) );
#
# Audit the Hybridized Featured Articles List for IDs
#
$block_ids = array();
foreach( $this->view->featured as $featured ) {
$block_ids[] = (int)$featured->o_id;
}
#
# News Articles List...
#
$newsList = new Object\NewsArticle\Listing();
$newsList->setOrderKey( "date" );
$newsList->setOrder( $this->document->getProperty( 'newsSort' ) == 'asc' ? 'asc' : 'desc' );
$newsList->setCondition( 'o_id NOT IN ('.implode( ',', $block_ids ).')' );
$newsList->setLimit( $this->document->getProperty( 'newsLimit' ) );
$this->view->news = $newsList->getObjects();
#
# Events Articles List...
#
$eventsList = new Object\EventsArticle\Listing();
$eventsList->setOrderKey( "date" );
$eventsList->setOrder( $this->document->getProperty( 'eventsSort' ) == 'asc' ? 'asc' : 'desc' );
$eventsList->setCondition( 'o_id NOT IN ('.implode( ',', $block_ids ).')' );
$eventsList->setLimit( $this->document->getProperty( 'eventsLimit' ) );
$this->view->events = $eventsList->getObjects();