Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/inc/lib/search/get_terms.php

96 lines
3.0 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* This script retrieves a list of terms that have xapian documents
* related with the term passed
* @package chamilo.include.search
*/
/**
* Code
*/
$terms_list = array();
// verify parameter and return a right value to avoid problems parsing it
if (empty($_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/ChamiloQuery.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 = chamilo_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[] = chamilo_get_boolean_query(XAPIAN_PREFIX_COURSEID . $cid);
// term filter
if ($term != '__all__') {
$filter[] = chamilo_get_boolean_query($prefix . $term);
// always and between term and courseid
$filter = chamilo_join_queries($filter, null, 'and');
}
$sf_terms = get_usual_sf_terms($filter, $specific_fields);
} else { // without cid
if ($term != '__all__') {
$filter[] = chamilo_get_boolean_query($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);