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lib.php
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Editing: lib.php
<?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 * * @package workshopform_accumulative * @copyright 2011 David Mudrak <david@moodle.com> * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); /** * Conversion handler for the accumulative grading strategy data */ class moodle1_workshopform_accumulative_handler extends moodle1_workshopform_handler { /** @var used by {@link self::migrate_legacy_scales()} */ private $newscaleids = array(); /** * Converts <ELEMENT> into <workshopform_accumulative_dimension> */ public function process_legacy_element(array $data, array $raw) { // prepare a fake record and re-use the upgrade logic $fakerecord = (object)$data; $newscaleid = $this->get_new_scaleid($data['scale']); $converted = (array)workshopform_accumulative_upgrade_element($fakerecord, $newscaleid, 12345678); unset($converted['workshopid']); $converted['id'] = $data['id']; $this->write_xml('workshopform_accumulative_dimension', $converted, array('/workshopform_accumulative_dimension/id')); return $converted; } /** * If needed, creates new standard (global) scale to replace the legacy workshop one and returns the mapping * * If the given $oldscaleid represents a scale, returns array $oldscaleid => $newscaleid that * can be used as a parameter for {@link workshopform_accumulative_upgrade_element()}. Otherwise * this method returns empty array. * * In workshop 1.x, scale field in workshop_elements had the following meaning: * 0 | 2 point Yes/No scale * 1 | 2 point Present/Absent scale * 2 | 2 point Correct/Incorrect scale * 3 | 3 point Good/Poor scale * 4 | 4 point Excellent/Very Poor scale * 5 | 5 point Excellent/Very Poor scale * 6 | 7 point Excellent/Very Poor scale * 7 | Score out of 10 * 8 | Score out of 20 * 9 | Score out of 100 * * @see workshopform_accumulative_upgrade_scales() * @param int $oldscaleid the value of the 'scale' field in the moodle.xml backup file * @return array (int)oldscaleid => (int)newscaleid */ protected function get_new_scaleid($oldscaleid) { if ($oldscaleid >= 0 and $oldscaleid <= 6) { // we need a new scale id if (!isset($this->newscaleids[$oldscaleid])) { // this is the first time the legacy scale is used in moodle.xml // let us migrate it $scale = $this->get_new_scale_definition($oldscaleid); // other scales are already stashed - let us append a new artificial record $currentscaleids = $this->converter->get_stash_itemids('scales'); if (empty($currentscaleids)) { $scale['id'] = 1; } else { $scale['id'] = max($currentscaleids) + 1; } $this->converter->set_stash('scales', $scale, $scale['id']); $this->newscaleids[$oldscaleid] = $scale['id']; // inform the workshop instance that it should annotate the new scale $inforefman = $this->parenthandler->get_inforef_manager(); $inforefman->add_ref('scale', $scale['id']); } return array($oldscaleid => $this->newscaleids[$oldscaleid]); } else { // not a scale return array(); } } /** * Returns a definition of a legacy workshop scale * * @see workshopform_accumulative_upgrade_scales * @param object $oldscaleid * @return array */ private function get_new_scale_definition($oldscaleid) { $data = array( 'userid' => 0, // restore will remap to the current user 'courseid' => 0, // global scale 'description' => '', 'descriptionformat' => FORMAT_HTML, ); switch ($oldscaleid) { case 0: $data['name'] = get_string('scalename0', 'workshopform_accumulative'); $data['scale'] = implode(',', array(get_string('no'), get_string('yes'))); break; case 1: $data['name'] = get_string('scalename1', 'workshopform_accumulative'); $data['scale'] = implode(',', array(get_string('absent', 'workshopform_accumulative'), get_string('present', 'workshopform_accumulative'))); break; case 2: $data['name'] = get_string('scalename2', 'workshopform_accumulative'); $data['scale'] = implode(',', array(get_string('incorrect', 'workshopform_accumulative'), get_string('correct', 'workshopform_accumulative'))); break; case 3: $data['name'] = get_string('scalename3', 'workshopform_accumulative'); $data['scale'] = implode(',', array('* ' . get_string('poor', 'workshopform_accumulative'), '**', '*** ' . get_string('good', 'workshopform_accumulative'))); break; case 4: $data['name'] = get_string('scalename4', 'workshopform_accumulative'); $data['scale'] = implode(',', array('* ' . get_string('verypoor', 'workshopform_accumulative'), '**', '***', '**** ' . get_string('excellent', 'workshopform_accumulative'))); break; case 5: $data['name'] = get_string('scalename5', 'workshopform_accumulative'); $data['scale'] = implode(',', array('* ' . get_string('verypoor', 'workshopform_accumulative'), '**', '***', '****', '***** ' . get_string('excellent', 'workshopform_accumulative'))); break; case 6: $data['name'] = get_string('scalename6', 'workshopform_accumulative'); $data['scale'] = implode(',', array('* ' . get_string('verypoor', 'workshopform_accumulative'), '**', '***', '****', '*****', '******', '******* ' . get_string('excellent', 'workshopform_accumulative'))); break; } return $data; } } /** * Transforms a given record from workshop_elements_old into an object to be saved into workshopform_accumulative * * @param stdClass $old legacy record from workshop_elements_old * @param array $newscaleids mapping from old scale types into new standard ones * @param int $newworkshopid id of the new workshop instance that replaced the previous one * @return stdclass to be saved in workshopform_accumulative */ function workshopform_accumulative_upgrade_element(stdclass $old, array $newscaleids, $newworkshopid) { $new = new stdclass(); $new->workshopid = $newworkshopid; $new->sort = $old->elementno; $new->description = $old->description; $new->descriptionformat = FORMAT_HTML; // calculate new grade/scale of the element if ($old->scale >= 0 and $old->scale <= 6 and isset($newscaleids[$old->scale])) { $new->grade = -$newscaleids[$old->scale]; } elseif ($old->scale == 7) { $new->grade = 10; } elseif ($old->scale == 8) { $new->grade = 20; } elseif ($old->scale == 9) { $new->grade = 100; } else { $new->grade = 0; // something is wrong } // calculate new weight of the element. Negative weights are not supported any more and // are replaced with weight = 0. Legacy workshop did not store the raw weight but the index // in the array of weights (see $WORKSHOP_EWEIGHTS in workshop 1.x) // workshop 2.0 uses integer weights only (0-16) so all previous weights are multiplied by 4. switch ($old->weight) { case 8: $new->weight = 1; break; case 9: $new->weight = 2; break; case 10: $new->weight = 3; break; case 11: $new->weight = 4; break; case 12: $new->weight = 6; break; case 13: $new->weight = 8; break; case 14: $new->weight = 16; break; default: $new->weight = 0; } return $new; }
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