From 777720c83323f49f00aec5d4d2e0e84955fe574d Mon Sep 17 00:00:00 2001 From: Marina Glancy Date: Thu, 13 Aug 2015 10:22:12 +0800 Subject: [PATCH] MDL-45500 gradingform: allow plugin uninstall --- lib/classes/plugininfo/gradingform.php | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/lib/classes/plugininfo/gradingform.php b/lib/classes/plugininfo/gradingform.php index 77137af993b..8c01012440e 100644 --- a/lib/classes/plugininfo/gradingform.php +++ b/lib/classes/plugininfo/gradingform.php @@ -31,6 +31,30 @@ defined('MOODLE_INTERNAL') || die(); class gradingform extends base { public function is_uninstall_allowed() { - return false; + return true; + } + + /** + * Pre-uninstall hook. + * This is intended for disabling of plugin, some DB table purging, etc. + */ + public function uninstall_cleanup() { + global $DB; + + // Find all definitions and templates. + $definitions = $DB->get_fieldset_select('grading_definitions', 'id', 'method = ?', [$this->name]); + if ($definitions) { + // Delete instances and definitions. Deleting instance will not delete grades because they were + // already pushed to the module and gradebook. + list($sqld, $paramsd) = $DB->get_in_or_equal($definitions); + $DB->delete_records_select('grading_instances', 'definitionid ' . $sqld, $paramsd); + $DB->delete_records_select('grading_definitions', 'id ' . $sqld, $paramsd); + } + // Delete templates for this grading method. + $DB->delete_records_select('grading_areas', 'component = ? AND activemethod = ?', array('core_grading', $this->name)); + // Update the remaining grading areas to use simple grading method instead of this grading method. + $DB->execute('UPDATE {grading_areas} SET activemethod = NULL WHERE activemethod = ?', [$this->name]); + + parent::uninstall_cleanup(); } }