Merge branch 'wip-MDL-45500-34' of git://github.com/marinaglancy/moodle into MOODLE_34_STABLE

2017-12-11 13:14:05 +08:00
parent 628f99bf45 e71a526011
commit 60e57b8448
1 changed files with 25 additions and 1 deletions
@@ -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();
    }
 }