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76 lines
2.6 KiB
76 lines
2.6 KiB
13 years ago
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<?php
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13 years ago
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function islandora_get_breadcrumbs($object) {
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$breadcrumbs = array();
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islandora_get_breadcrumbs_recursive($object->id, $breadcrumbs, $object->repository);
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13 years ago
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if(isset($breadcrumbs[0])) {
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unset($breadcrumbs[0]);
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}
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$breadcrumbs = array_reverse($breadcrumbs);
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return $breadcrumbs;
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}
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/**
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* Builds an array of drupal links for use in breadcrumbs.
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*
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* @todo Make fully recursive...
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*
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* @global type $base_url
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* @param type $pid
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* @param type $breadcrumbs
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* @param type $level
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*/
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function islandora_get_breadcrumbs_recursive($pid, &$breadcrumbs, $repository) {
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// Before executing the query, we hve a base case of accessing the top-level collection
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global $base_url;
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static $max_level = 10;
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static $level = -1;
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if (count($breadcrumbs) === 0) {
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$level = $max_level;
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}
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$root = variable_get('islandora_repository_pid', 'islandora:root');
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if ($pid == $root) {
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$breadcrumbs[] = l(menu_get_active_title(), 'islandora');
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$breadcrumbs[] = l(t('Home'), '<front>');
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}
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else {
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$query_string = 'select $parentObject $title $content from <#ri>
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where (
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<info:fedora/' . $pid . '> <fedora-model:label> $title
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and $parentObject <fedora-model:hasModel> $content
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and (
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<info:fedora/' . $pid . '> <fedora-rels-ext:isMemberOfCollection> $parentObject
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or <info:fedora/' . $pid . '> <fedora-rels-ext:isMemberOf> $parentObject
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or <info:fedora/' . $pid . '> <fedora-rels-ext:isPartOf> $parentObject
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)
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and $parentObject <fedora-model:state> <info:fedora/fedora-system:def/model#Active>
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)
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minus $content <mulgara:is> <info:fedora/fedora-system:FedoraObject-3.0>
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order by $title desc';
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$results = $repository->ri->itqlQuery($query_string);
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if (count($results) > 0 && $level > 0) {
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$parent = $results[0]['parentObject']['value'];
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$this_title = $results[0]['title']['value'];
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if (empty($this_title)) {
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$this_title = t('-');
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}
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$breadcrumbs[] = l($this_title, "islandora/object/$pid");
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$level--;
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islandora_get_breadcrumbs_recursive($parent, $breadcrumbs, $repository);
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}
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else {
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$breadcrumbs[] = '...'; //Add an non-link, as we don't know how to get back to the root.
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islandora_get_breadcrumbs_recursive($root, $breadcrumbs, $repository); //And render the last two links and break (on the next pass).
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}
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}
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}
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