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MDL-39450 course formats: add static cache to get_format_or_default

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This function gets called hundreds of times on every page, often with
exactly the same input, so I added a static cache.
This commit is contained in:
Tim Hunt 2013-05-01 15:50:09 +01:00
parent 95190fda69
commit 6382060daf
1 changed files with 15 additions and 9 deletions
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24
course/format/lib.php
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@ -72,6 +72,8 @@ abstract class format_base {
protected $formatoptions = array();
/** @var array cached instances */
private static $instances = array();
/** @var array plugin name => class name. */
private static $classesforformat = array('site' => 'site');
/**
* Creates a new instance of class
@ -94,24 +96,28 @@ abstract class format_base {
* @return string
*/
protected static final function get_format_or_default($format) {
if ($format === 'site') {
return $format;
if (array_key_exists($format, self::$classesforformat)) {
return self::$classesforformat[$format];
}
$plugins = get_sorted_course_formats();
if (in_array($format, $plugins)) {
return $format;
foreach ($plugins as $plugin) {
self::$classesforformat[$plugin] = $plugin;
}
if (array_key_exists($format, self::$classesforformat)) {
return self::$classesforformat[$format];
}
// Else return default format
$defaultformat = get_config('moodlecourse', 'format');
if (!in_array($defaultformat, $plugins)) {
// when default format is not set correctly, use the first available format
$defaultformat = reset($plugins);
}
static $warningprinted = array();
if (empty($warningprinted[$format])) {
debugging('Format plugin format_'.$format.' is not found. Using default format_'.$defaultformat, DEBUG_DEVELOPER);
$warningprinted[$format] = true;
}
debugging('Format plugin format_'.$format.' is not found. Using default format_'.$defaultformat, DEBUG_DEVELOPER);
self::$classesforformat[$format] = $defaultformat;
return $defaultformat;
}