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- <?php
- /**
- * @file
- * This script retrieves a list of terms that have xapian documents
- * related with the term passed
- */
- $terms_list = array();
- // verify parameter and return a right value to avoid problems parsing it
- if (empty($_GET['term']) || empty($_GET['prefix']) || !in_array($_GET['operator'], array('or', 'and'))) {
- echo json_encode($terms_list);
- return;
- }
- require_once dirname(__FILE__) . '../../../global.inc.php';
- require_once api_get_path(LIBRARY_PATH).'/search/DokeosQuery.php';
- /**
- * search with filter and build base array avoding repeated terms
- * @param array $filter XapianQuery array
- * @param array $specific_fields
- * @return array $sf_terms
- */
- function get_usual_sf_terms($filter, $specific_fields) {
- $sf_terms = array();
- $dkterms = dokeos_query_simple_query('', 0, 1000, $filter);
- if (is_array($dkterms) && is_array($dkterms[1])) {
- foreach ($specific_fields as $specific_field) {
- foreach($dkterms[1] as $obj) {
- foreach ($obj['sf-'.$specific_field['code']] as $raw_term) {
- if (count($raw_term['name']) > 1) {
- $normal_term = substr($raw_term['name'], 1);
- $sf_terms[$specific_field['code']][$normal_term] = $normal_term;
- }
- }
- }
- }
- }
- return $sf_terms;
- }
- $term = $_GET['term'];
- $prefix = $_GET['prefix'];
- $operator = $_GET['operator'];
- $specific_fields = get_specific_field_list();
- $sf_terms = array();
- if ( ($cid=api_get_course_id()) != -1) { // with cid
- // course filter
- $filter[] = dokeos_get_boolean_query(XAPIAN_PREFIX_COURSEID . $cid);
- // term filter
- if ($term != '__all__') {
- $filter[] = dokeos_get_boolean_query($prefix . $term);
- // always and between term and courseid
- $filter = dokeos_join_queries($filter, null, 'and');
- }
- $sf_terms = get_usual_sf_terms($filter, $specific_fields);
- } else { // without cid
- if ($term != '__all__') {
- $filter[] = dokeos_get_boolean_query($prefix . $term);
- $sf_terms = get_usual_sf_terms($filter, $specific_fields);
- } else { // no cid and all/any terms
- foreach ($specific_fields as $specific_field) {
- foreach(xapian_get_all_terms(1000, $specific_field['code']) as $raw_term) {
- if (count($raw_term['name']) > 1) {
- $normal_term = substr($raw_term['name'], 1);
- $sf_terms[$specific_field['code']][$normal_term] = $normal_term;
- }
- }
- }
- }
- }
- // build array to return
- foreach ($sf_terms as $sf_prefix => $term_group) {
- //if (count($tem_group) > 0) {
- $first_term = array('__all__' => ($operator=='or'? '-- Any --': '-- All -- '));
- //}
- if ($sf_prefix != $prefix) {
- $terms_list[] = array(
- 'prefix' => $sf_prefix,
- 'terms' => array_merge($first_term, $term_group),
- );
- }
- }
- echo json_encode($terms_list);
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