Ok, consegui fazer funcionar. Não tenho certeza se é a solução mais elegante. Se alguém quiser contribuir com melhorias, sou todo ouvidos. Espero que isso ajude alguém que tenha um problema semelhante no futuro.
Minha consulta de loop de item/produto final:
// Get all Items associated with this category page
// ID of current category
$current_cat = $this->category->id;
// Product IDs array
$product_ids_array = array();
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array('id' )));
$query->from( $db->quoteName( '#__k2_items' ) );
$query->where( $db->quoteName( 'catid' )." = " .$current_cat . ' AND published = 1' );
$db->setQuery( $query );
$row = $db->loadObjectList();
// Store Titles, Descriptions and IDs in arrays
foreach ($row as $value)
{
$product_ids_array[] = $value->id;
};
// Now we're going to get the IDs of the tags associated with the items
// Create comma seperated list of product ids
$product_ids = implode(',', $product_ids_array);
// Tag IDs Array
$tag_IDs_array = array();
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array( 'tagID', 'itemID' )));
$query->from( $db->quoteName( '#__k2_tags_xref' ) );
$query->where($db->quoteName('itemID') . ' IN (' . $product_ids . ' )' );
$db->setQuery( $query );
$row = $db->loadObjectList();
$tagsRow = $db->loadObjectList();
$tagsResult = array();
$tagsResult = json_decode(json_encode($tagsRow),true);
// Store tag IDs and item IDs
foreach ($row as $value)
{
$tag_IDs_array[] = $value->tagID;
};
// Now we're going to get the names of the tags
// Create comma seperated list of tag ids
$tag_IDs = implode(',', $tag_IDs_array );
// Tag Names Array
$tag_names_array = array();
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array( 'name' )));
$query->from( $db->quoteName( '#__k2_tags' ) );
$query->where($db->quoteName('id') . ' IN (' . $tag_IDs . ' )' );
$db->setQuery( $query );
$row = $db->loadObjectList();
// Store tag names
foreach ($row as $value)
{
$tag_names_array[] = $value->name;
};
// Now we're going to get the attachments
// Attachments Arrays
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array( 'id', 'itemID', 'filename', 'title', 'titleAttribute' )));
$query->from( $db->quoteName( '#__k2_attachments' ) );
$query->where($db->quoteName('itemID') . ' IN (' . $product_ids . ' )' );
$db->setQuery( $query );
$attachmentRow = $db->loadObjectList();
$attachmentResult = array();
$attachmentResult = json_decode(json_encode($attachmentRow),true);
// Function to search multidimensional arrays
function search($array, $key, $value)
{
$results = array();
if (is_array($array)) {
if (isset($array[$key]) && $array[$key] == $value) {
$results[] = $array;
}
foreach ($array as $subarray) {
$results = array_merge($results, search($subarray, $key, $value));
}
}
return $results;
}
// Now we're going to create our product loop
// Get Tag Names
foreach( $tag_names_array as $display_tag_name ) {
// Unformatted Tag Name - this is the one that will be displayed on the front end
$unformatted_display_tag_name = $display_tag_name;
// Convert Tag Name White Spaces to Dashes
$display_tag_name = preg_replace("/[\s_]/", "-", $display_tag_name);
// Lower Case Tag Name
$display_tag_name = strtolower($display_tag_name);
switch ( $display_tag_name == $display_tag_name ) {
case $display_tag_name:
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array( 'title', 'introtext', 'id' )));
$query->from( $db->quoteName( '#__k2_items' ) );
$query->where($db->quoteName('alias') . ' LIKE '. $db->quote($display_tag_name.'-%') . ' AND ' . $db->quoteName('catid'). ' = ' . $current_cat . ' AND published = 1' );
$db->setQuery( $query );
$row = $db->loadObjectList();
// Start Row
echo '<div class="row">';
// Start 12 Column
echo '<div class="col-lg-12">';
// Start Row
echo '<div class="row">';
// Start Item Container
echo '<section class="item-container">';
// Display Tag Name
echo '<div class="col-lg-12"><section class="tag-name"><a href="#">' . $unformatted_display_tag_name . '</a></section></div>';
foreach ($row as $value) {
// Start Column 6
echo '<div class="col-lg-6 is-hidden">';
// Store ID of item
$itemID = $value->id;
// Search attachmentResult array
$attachment_search_result = (search($attachmentResult, 'itemID', $itemID));
// Check to see if there are any associated attachments - display attachment is present
if($attachment_search_result) {
$db = JFactory::getDbo();
$query = $db->getQuery( true );
$query->select($db->quoteName(array( 'filename' )));
$query->from( $db->quoteName( '#__k2_attachments' ) );
$query->where( $db->quoteName( 'itemID' )." = " .$itemID );
$db->setQuery( $query );
$attachmentRow = $db->loadObjectList();
foreach ($attachmentRow as $attachmentValue) {
echo $attachmentValue->filename . '<br/>';
}
}
// Display Item Title
echo '<h5>' .$value->title. '</h5>';
// Display Item Text
echo '<p>' .$value->introtext. '</p>';
// End Column 6
echo '</div>';
}
// Close Item Container
echo '</section>';
// Close Row
echo '</div>';
// Close 12 Column
echo '</div>';
// Close Row
echo '</div>';
}
}
?>
<!-- /Display Category Items -->