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78 lines
2.6 KiB
78 lines
2.6 KiB
<?php |
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function islandora_get_breadcrumbs($pid) { |
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module_load_include('inc', 'islandora', 'RestConnection'); |
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$breadcrumbs = array(); |
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$connection = new RestConnection(); |
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islandora_get_breadcrumbs_recursive($pid, $breadcrumbs, $connection->repository); |
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if(isset($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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} |