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get_featured_collection_categ_sub_fcs()

Description

Get a list of featured collections based on a higher level featured collection category. This returns all direct/indirect
collections under that category.

Parameters

ColumnTypeDefaultDescription
$c array Collection data structure
$ctx array array Contextual data (e.g disable access control). This param MUST NOT get exposed over the API

Return

array

Location

include/collections_functions.php lines 3061 to 3130

Definition

 
function get_featured_collection_categ_sub_fcs(array $c, array $ctx = array())
    {
    global $CACHE_FC_CATEG_SUB_FCS;
    $CACHE_FC_CATEG_SUB_FCS = (!is_null($CACHE_FC_CATEG_SUB_FCS) && is_array($CACHE_FC_CATEG_SUB_FCS) ? $CACHE_FC_CATEG_SUB_FCS : array());
    if(isset($CACHE_FC_CATEG_SUB_FCS[$c["ref"]]))
        {
        return $CACHE_FC_CATEG_SUB_FCS[$c["ref"]];
        }

    $access_control = (isset($ctx["access_control"]) && is_bool($ctx["access_control"]) ? $ctx["access_control"] : true);
    $all_fcs = (isset($ctx["all_fcs"]) && is_array($ctx["all_fcs"]) && !empty($ctx["all_fcs"]) ? $ctx["all_fcs"] : get_all_featured_collections());

    $collections = array();

    $allowed_fcs = ($access_control ? compute_featured_collections_access_control() : true);
    if($allowed_fcs === false)
        {
        $CACHE_FC_CATEG_SUB_FCS[$c["ref"]] = $collections;
        return $collections;
        }
    elseif(is_array($allowed_fcs))
        {
        $allowed_fcs_flipped = array_flip($allowed_fcs);
        
        // Collection is not allowed
        if(!isset($allowed_fcs_flipped[$c['ref']]))
            {
            $CACHE_FC_CATEG_SUB_FCS[$c["ref"]] = $collections;
            return $collections;
            }
        }

    $all_fcs_rp = reshape_array_by_value_keys($all_fcs, 'ref', 'parent');
    $all_fcs = array_flip_by_value_key($all_fcs, 'ref');

    $queue = new SplQueue();
    $queue->setIteratorMode(SplQueue::IT_MODE_DELETE);
    $queue->enqueue($c['ref']);

    while(!$queue->isEmpty())
        {
        $fc = $queue->dequeue();
        $fc_children = array();

        if(
            $all_fcs[$fc]['has_resources'] > 0
            && (
                $allowed_fcs === true
                || (is_array($allowed_fcs) && isset($allowed_fcs_flipped[$fc]))
            )
        )
            {
            $collections[] = $fc;
            }
        elseif($all_fcs[$fc]['has_children'] > 0)
            {
            $fc_children = array_keys($all_fcs_rp, $fc);
            }

        foreach($fc_children as $fc_child_ref)
            {
            $queue->enqueue($fc_child_ref);
            }
        }

    $CACHE_FC_CATEG_SUB_FCS[$c["ref"]] = $collections;

    debug("get_featured_collection_categ_sub_fcs(ref = {$c["ref"]}): returned collections: " . implode(", ", $collections));
    return $collections;
    }

This article was last updated 4th December 2024 09:05 Europe/London time based on the source file dated 27th November 2024 15:30 Europe/London time.