Proyectos de Subversion Moodle

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1 efrain 1
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Upgrade library code for the numerical question type.
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 *
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 * @package    qtype
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 * @subpackage numerical
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 * @copyright  2010 The Open University
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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defined('MOODLE_INTERNAL') || die();
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/**
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 * Class for converting attempt data for numerical questions when upgrading
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 * attempts to the new question engine.
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 *
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 * This class is used by the code in question/engine/upgrade/upgradelib.php.
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 *
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 * @copyright  2010 The Open University
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class qtype_numerical_qe2_attempt_updater extends question_qtype_attempt_updater {
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    public function right_answer() {
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        foreach ($this->question->options->answers as $ans) {
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            if ($ans->fraction > 0.999) {
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                $right = $ans->answer;
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                if (empty($this->question->options->units)) {
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                    return $right;
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                }
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                $unit = reset($this->question->options->units);
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                $unit = $unit->unit;
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                if (!empty($this->question->options->unitsleft)) {
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                    return $unit . ' ' . $right;
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                } else {
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                    return $right . ' ' . $unit;
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                }
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            }
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        }
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    }
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    public function response_summary($state) {
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        if (strpos($state->answer, '|||||') === false) {
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            $answer = $state->answer;
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            $unit = '';
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        } else {
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            list($answer, $unit) = explode('|||||', $state->answer, 2);
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        }
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        if (empty($answer) && empty($unit)) {
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            $resp = null;
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        } else {
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            $resp = $answer;
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        }
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        if (!empty($unit)) {
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            if (!empty($this->question->options->unitsleft)) {
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                $resp = trim($unit . ' ' . $resp);
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            } else {
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                $resp = trim($resp . ' ' . $unit);
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            }
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        }
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        return $resp;
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    }
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    public function was_answered($state) {
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        return !empty($state->answer);
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    }
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    public function set_first_step_data_elements($state, &$data) {
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        $data['_separators'] = '.$,';
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    }
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    public function supply_missing_first_step_data(&$data) {
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        $data['_separators'] = '.$,';
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    }
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    public function set_data_elements_for_step($state, &$data) {
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        if (empty($state->answer)) {
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            return;
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        }
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        if (strpos($state->answer, '|||||') === false) {
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            $data['answer'] = $state->answer;
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        } else {
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            list($answer, $unit) = explode('|||||', $state->answer, 2);
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            if (!empty($this->question->options->showunits) &&
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                    $this->question->options->showunits == 1) {
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                // Multichoice units.
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                $data['answer'] = $answer;
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                $data['unit'] = $unit;
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            } else if (!empty($this->question->options->unitsleft)) {
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                if (!empty($unit)) {
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                    $data['answer'] = $unit . ' ' . $answer;
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                } else {
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                    $data['answer'] = $answer;
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                }
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            } else {
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                if (!empty($unit)) {
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                    $data['answer'] = $answer . ' ' . $unit;
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                } else {
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                    $data['answer'] = $answer;
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                }
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            }
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        }
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    }
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}