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<?php // $Id: filter.php,v 1.5 2006/03/26 06:28:50 moodler Exp $
//
// This function provides automatic linking to data contents of text
// fields where these fields have autolink enabled.
//
// Original code by Williams, Stronk7, Martin D.
// Modified for data module by Vy-Shane SF.
function data_filter($courseid, $text) {
global $CFG;
static $nothingtodo;
static $contentlist;
if (!empty($nothingtodo)) { // We've been here in this page already
return $text;
}
// if we don't have a courseid, we can't run the query, so
if (empty($courseid)) {
return $text;
}
// Create a list of all the resources to search for. It may be cached already.
if (empty($contentlist)) {
// We look for text field contents only, and only if the field has
// autolink enabled (param1).
$sql = 'SELECT DISTINCT(dc.id) AS contentid, ' .
'dr.id AS recordid, ' .
'dc.content AS content, ' .
'd.id AS dataid ' .
'FROM '.$CFG->prefix.'data AS d, ' .
$CFG->prefix.'data_fields AS df, ' .
$CFG->prefix.'data_records AS dr, ' .
$CFG->prefix.'data_content AS dc ' .
"WHERE (d.course = '$courseid' or d.course = '".SITEID."')" .
'AND d.id = df.dataid ' .
'AND df.id = dc.fieldid ' .
'AND d.id = dr.dataid ' .
'AND dr.id = dc.recordid ' .
"AND df.type = 'text' " .
'AND df.param1 = 1';
if (!$datacontents = get_records_sql($sql)) {
return $text;
}
$contentlist = array();
foreach ($datacontents as $datacontent) {
$currentcontent = trim($datacontent->content);
$strippedcontent = strip_tags($currentcontent);
if (!empty($strippedcontent)) {
$contentlist[] = new filterobject(
$currentcontent,
'<a class="data autolink" title="'.
$strippedcontent.'" href="'.
$CFG->wwwroot.'/mod/data/view.php?d='. $datacontent->dataid .
'&rid='. $datacontent->recordid .'" target="'.
$CFG->framename.'">',
'</a>', false, true);
}
} // End foreach
}
return filter_phrases($text, $contentlist); // Look for all these links in the text
}
?>
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