page_related_asset_listing.inc

<?php
require_once SQ_PACKAGES_PATH.'/cms/page_templates/page_asset_listing/page_asset_listing.inc';

class Page_Related_Asset_Listing extends Page_Asset_Listing
{


    function __construct($assetid=0)
    {
        parent::__construct($assetid);

    }//end constructor


    function getAssetList()
    {
        $assets_to_list = NULL;
        $group_by = $this->attr('group_by');

        $logic = $this->attr('all_root_nodes') ? 'AND' : 'OR';

        // this is the list of all type codes that we are going to show
        // we pass this list to the getLinks and getChildren functions (below) to narrow
        // the query down a bit
        // if there are no types to list, we cant list anything
        $wanted_types = $this->attr('types');
        if (empty($wanted_types)) {
            trigger_localised_error('CMS0019', E_USER_NOTICE);
            return Array();
        }

        // get the root assets whose sub-assets/children we are displaying
        // This may come from the parameter map, but the dynamic value must be a child of the static value
        // if there are no root assets, we will use ourselves and print our children
        $root_asset_ids = $this->getRootNodes();

        $sort_info = $this->getSortInfo();

        // get all the assets that would be listed in a normal asset listing in this case WITHOUT sorting
        // Let's sort the result after tag filtering is done. Big performance improvement.
        $unfiltered_assets_to_list = parent::_getAssetList($group_by, $logic, $wanted_types, $root_asset_ids, $sort_info);

        // get all the assets related to any of the relators
        $relator_ids = $this->getRelators();
        $tag_manager = $GLOBALS['SQ_SYSTEM']->getTagManager();
        $related_assets = $tag_manager->getRelatedAssets($relator_ids, $this->_getThesaurusFilters());
        $related_ids = array_keys($related_assets);
        $related_ids = array_diff($related_ids, $relator_ids);

        // get all the elements of the unfiltered list that are on the related list
        $assets_to_list = Array();
        foreach ($related_ids as $related_id) {
            $asset_to_list = array_get_index($unfiltered_assets_to_list, $related_id);
            if (!is_null($asset_to_list)) {
                $assets_to_list[$related_id] = $asset_to_list;
            }
        }

        // Sort the final result set
        if ($group_by == 'number') {
            $assets_to_list = parent::_getSortedAssetLists($assets_to_list, $sort_info);
        }

        return $assets_to_list;

    }//end getAssetList()


    function getRelators()
    {
        if (!isset($this->_tmp['relator_asset_ids'])) {
            $relator_ids = Array();
            $relator_links = $GLOBALS['SQ_SYSTEM']->am->getLinks($this->id, SQ_LINK_NOTICE, '', FALSE, 'major', 'relator');
            foreach ($relator_links as $relator_link) {
                if (strstr($relator_link['minorid'], ':') !== FALSE) {
                    // The link minor is a shadow asset
                    $relator_ids[] = $relator_link['minorid'];
                } else {
                    $relator_ids[] = (int)$relator_link['minorid'];
                }
            }
            $parameter_map = $this->getAttribute('parameter_map');

            $raw_dynamic_relators = $parameter_map->getParameterValue('relator_node');

            // check if we have a dynamic parameter -- if so, let's do some security checks
            if (!empty($raw_dynamic_relators)) {

                // note that dynamic relators can be supplied as an array of asset ids or
                // as a comma delimited string of asset ids
                if (!is_array($raw_dynamic_relators)) {
                    $dynamic_relators = explode(',', $raw_dynamic_relators);
                }

                // if there are dynamic relators, they should override the static relators
                if (!empty($dynamic_relators)) {
                    $relator_ids = $dynamic_relators;
                }

            }//end if

            // if no relators have been set anywhere, use this asset as the default
            if (empty($relator_ids)) {
                $relator_ids = Array($this->id);
            }

            $this->_tmp['relator_ids'] = $relator_ids;

        }//end if

        return $this->_tmp['relator_ids'];

    }//end getRelators()


    function getStaticRelators()
    {
        $relator_ids = Array();
        $relator_links = $GLOBALS['SQ_SYSTEM']->am->getLinks($this->id, SQ_LINK_NOTICE, '', FALSE, 'major', 'relator');
        foreach ($relator_links as $relator_link) {
            $relator_ids[$relator_link['minorid']] =  $relator_link['minorid'];
        }

        return $relator_ids;

    }//end getStaticRelators()

    
    function _getThesaurusFilters()
    {
        if (empty($this->id)) return Array();
        $thesaurus_links = $GLOBALS['SQ_SYSTEM']->am->getLinks($this->id, SQ_LINK_NOTICE, 'thesaurus', FALSE, 'major', 'thesaurus_filter');
        $res = Array();
        foreach ($thesaurus_links as $link) {
            $res[] = $link['minorid'];
        }
        return $res;

    }//end _getThesaurusFilters()
    
    
    function _getCacheKey()
    {
        return parent::_getCacheKey().'-REL:'.join(',', $this->getRelators());
        
    }//end _getCacheKey()
    

}//end class
?>