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Merge pull request #11 from nebgor/MDL-27447

MDL-27447 mod_quiz backup conversion
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2 parents 78d22af + 4b2da7c commit 0f5860f707f398bb330bd142b33da2f8f1a594be @mudrd8mz mudrd8mz committed Jun 3, 2011
Showing with 155 additions and 0 deletions.
  1. +155 −0 mod/quiz/backup/moodle1/lib.php
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+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Provides support for the conversion of moodle1 backup to the moodle2 format
+ * Based off of a template @ http://docs.moodle.org/en/Development:Backup_1.9_conversion_for_developers
+ *
+ * @package mod
+ * @subpackage quiz
+ * @copyright 2011 Aparup Banerjee <aparup@moodle.com>
+ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die();
+
+/**
+ * Quiz conversion handler
+ */
+class moodle1_mod_quiz_handler extends moodle1_mod_handler {
+
+ /**
+ * Declare the paths in moodle.xml we are able to convert
+ *
+ * The method returns list of {@link convert_path} instances.
+ * For each path returned, the corresponding conversion method must be
+ * defined.
+ *
+ * Note that the path /MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ does not
+ * actually exist in the file. The last element with the module name was
+ * appended by the moodle1_converter class.
+ *
+ * @return array of {@link convert_path} instances
+ */
+ public function get_paths() {
+ return array(
+ new convert_path(
+ 'quiz', '/MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ',
+ array(
+ 'newfields' => array(
+ 'showuserpicture' => 0,
+ 'questiondecimalpoints' => -2,
+ 'introformat' => 0,
+ 'showblocks' => 0,
+ )
+ )
+ ),
+ new convert_path('quiz_question_instances', '/MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ/QUESTION_INSTANCES'),
+ new convert_path('quiz_question_instance', '/MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ/QUESTION_INSTANCES/QUESTION_INSTANCE'),
+ new convert_path('quiz_feedbacks', '/MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ/FEEDBACKS'),
+ new convert_path('quiz_feedback', '/MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ/FEEDBACKS/FEEDBACK',
+ array(
+ 'newfields' => array(
+ 'feedbacktextformat' => 0
+ )
+ )
+ )
+ );
+ }
+
+ /**
+ * This is executed every time we have one /MOODLE_BACKUP/COURSE/MODULES/MOD/QUIZ
+ * data available
+ */
+ public function process_quiz($data) {
+
+ //quiz: SET sumgrades=0 WHERE sumgrades IS NULL
+ if (is_null($data['sumgrades'])) {
+ $data['sumgrades'] = 0;
+ //@todo for user data: quiz_attempts SET sumgrades=0 WHERE sumgrades IS NULL
+ //@todo for user data: quiz_grades.grade should be not be null , convert to default 0
+ }
+
+ /// Convert 1.9 quiz.timelimit from minutes to seconds.
+ $data['timelimit'] *= 60;
+
+ // get the course module id and context id
+ $instanceid = $data['id'];
+ $cminfo = $this->get_cminfo($instanceid);
+ $moduleid = $cminfo['id'];
+ $contextid = $this->converter->get_contextid(CONTEXT_MODULE, $moduleid);
+
+ // we now have all information needed to start writing into the file
+ $this->open_xml_writer("activities/quiz_{$moduleid}/quiz.xml");
+ $this->xmlwriter->begin_tag('activity', array('id' => $instanceid, 'moduleid' => $moduleid,
+ 'modulename' => 'quiz', 'contextid' => $contextid));
+ $this->xmlwriter->begin_tag('quiz', array('id' => $instanceid));
+
+ unset($data['id']); // we already write it as attribute, do not repeat it as child element
+ foreach ($data as $field => $value) {
+ $this->xmlwriter->full_tag($field, $value);
+ }
+ }
+
+ public function on_quiz_question_instances_start() {
+ $this->xmlwriter->begin_tag('question_instances');
+ }
+
+ public function on_quiz_question_instances_end() {
+ $this->xmlwriter->end_tag('question_instances');
+ }
+
+ public function process_quiz_question_instance($data) {
+ // quiz_question_instances.grade should be decimal(12,7) not null default 0
+ // $data['grade'] and other precisions will be changed when inserted into db.
+
+ $this->write_xml('question_instance', $data, array('/question_instance/id'));
+ }
+
+ public function on_quiz_feedbacks_start() {
+ $this->xmlwriter->begin_tag('feedbacks');
+ }
+
+ public function on_quiz_feedbacks_end() {
+ $this->xmlwriter->end_tag('feedbacks');
+ }
+
+ public function process_quiz_feedback($data) {
+ //quiz_feedback.mingrade not null! defaults 0
+ if (is_null($data['mingrade'])) {
+ $data['mingrade'] = 0;
+ }
+ //quiz_feedback.maxgrade not null! defaults 0
+ if (is_null($data['maxgrade'])) {
+ $data['maxgrade'] = 0;
+ }
+
+ $this->write_xml('feedback', $data, array('/feedback/id'));
+ }
+
+ /**
+ * This is executed when we reach the closing </MOD> tag of our 'quiz' path
+ */
+ public function on_quiz_end() {
+ // create 1 new <overrides> element (no data from 1.9)
+ $this->write_xml('overrides', array());
+
+ $this->xmlwriter->end_tag('quiz');
+ $this->xmlwriter->end_tag('activity');
+ $this->close_xml_writer();
+ }
+}

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