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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/>.
/**
* Algebra question type upgrade code.
*
* @package qtype_algebra
* @copyright Roger Moore
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
function xmldb_qtype_algebra_upgrade($oldversion=0) {
global $CFG, $THEME, $DB;
$dbman = $DB->get_manager();
// Add the field to store the string which is placed in front of the answer
// box when the question is displayed.
if ($oldversion < 2008061500) {
$table = new xmldb_table('question_algebra');
$field = new xmldb_field('answerprefix', XMLDB_TYPE_TEXT, 'small', null, XMLDB_NOTNULL, null, '', 'allowedfuncs');
if (!$dbman->field_exists($table, $field)) {
$dbman->add_field($table, $field);
}
upgrade_plugin_savepoint(true, 2008061500, 'qtype', 'algebra');
}
// Drop the answers and variables fields wich are totaly redundants.
if ($oldversion < 2011072800) {
$table = new xmldb_table('question_algebra');
$field = new xmldb_field('answers');
if ($dbman->field_exists($table, $field)) {
$dbman->drop_field($table, $field);
}
$field = new xmldb_field('variables');
if ($dbman->field_exists($table, $field)) {
$dbman->drop_field($table, $field);
}
upgrade_plugin_savepoint(true, 2011072800, 'qtype', 'algebra');
}
// Change tables names according to new standards for plugins.
if ($oldversion < 2012061701) {
// Renaming old tables.
$table = new xmldb_table('question_algebra');
if ($dbman->table_exists($table)) {
$dbman->rename_table($table, 'qtype_algebra');
}
$table = new xmldb_table('question_algebra_variables');
if ($dbman->table_exists($table)) {
$dbman->rename_table($table, 'qtype_algebra_variables');
}
upgrade_plugin_savepoint(true, 2012061701, 'qtype', 'algebra');
}
// Change table name one more time.
if ($oldversion < 2012061702) {
// Renaming old table.
$table = new xmldb_table('qtype_algebra');
if ($dbman->table_exists($table)) {
$dbman->rename_table($table, 'qtype_algebra_options');
}
upgrade_plugin_savepoint(true, 2012061702, 'qtype', 'algebra');
}
return true;
}
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