question/exportone.php

   1 <?php
   2 // This file is part of Stack - http://stack.maths.ed.ac.uk/
   3 //
   4 // Stack is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Stack is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Stack.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Script to download the export of a single question.
  19  *
  20  * @copyright 2015 the Open University
  21  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22  */
  23
  24 require_once(__DIR__.'/../config.php');
  25
  26 require_once($CFG->libdir . '/questionlib.php');
  27 require_once($CFG->dirroot . '/question/format/xml/format.php');
  28
  29 // Get the parameters from the URL.
  30 $questionid = required_param('id', PARAM_INT);
  31 $cmid = optional_param('cmid', 0, PARAM_INT);
  32 $courseid = optional_param('courseid', 0, PARAM_INT);
  33 $urlparams = ['id' => $questionid, 'sesskey' => sesskey()];
  34
  35 if ($cmid) {
  36     $cm = get_coursemodule_from_id(null, $cmid);
  37     require_login($cm->course, false, $cm);
  38     $thiscontext = context_module::instance($cmid);
  39     $urlparams['cmid'] = $cmid;
  40 } else if ($courseid) {
  41     require_login($courseid, false);
  42     $thiscontext = context_course::instance($courseid);
  43     $urlparams['courseid'] = $courseid;
  44 } else {
  45     print_error('missingcourseorcmid', 'question');
  46 }
  47 require_sesskey();
  48
  49 // Load the necessary data.
  50 $contexts = new question_edit_contexts($thiscontext);
  51 $questiondata = question_bank::load_question_data($questionid);
  52
  53 // Check permissions.
  54 question_require_capability_on($questiondata, 'view');
  55
  56 // Initialise $PAGE. Nothing is output, so this does not really matter. Just avoids notices.
  57 $nexturl = new moodle_url('/question/type/stack/questiontestrun.php', $urlparams);
  58 $PAGE->set_url('/question/exportone.php', $urlparams);
  59 $PAGE->set_heading($COURSE->fullname);
  60 $PAGE->set_pagelayout('admin');
  61
  62 // Set up the export format.
  63 $qformat = new qformat_xml();
  64 $filename = question_default_export_filename($COURSE, $questiondata) .
  65         $qformat->export_file_extension();
  66 $qformat->setContexts($contexts->having_one_edit_tab_cap('export'));
  67 $qformat->setCourse($COURSE);
  68 $qformat->setQuestions([$questiondata]);
  69 $qformat->setCattofile(false);
  70 $qformat->setContexttofile(false);
  71
  72 // Do the export.
  73 if (!$qformat->exportpreprocess()) {
  74     send_file_not_found();
  75 }
  76 if (!$content = $qformat->exportprocess(true)) {
  77     send_file_not_found();
  78 }
  79 send_file($content, $filename, 0, 0, true, true, $qformat->mime_type());