question/question2.php

   1 <?php // $Id$
   2 /**
   3  * Page for editing questions using the new form library.
   4  *
   5  * TODO: currently this still treats the quiz as special
   6  *
   7  * @author T.J.Hunt@open.ac.uk
   8  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   9  * @package question
  10  *//** */
  11
  12 // Includes.
  13 require_once(dirname(__FILE__) . '/../config.php');
  14 require_once(dirname(__FILE__) . '/editlib.php');
  15 require_once($CFG->libdir . '/filelib.php');
  16 require_once($CFG->libdir . '/formslib.php');
  17
  18 $returnurl = optional_param('returnurl', 0, PARAM_URL);
  19 if (!$returnurl && isset($SESSION->fromurl)) {
  20     $returnurl = $SESSION->fromurl;
  21 }
  22
  23 // Read URL parameters telling us which question to edit.
  24 $id = optional_param('id', 0, PARAM_INT); // question id
  25 $qtype = optional_param('qtype', '', PARAM_FILE);
  26 $categoryid = optional_param('category', 0, PARAM_INT);
  27 $wizardnow =  optional_param('wizardnow', '', PARAM_ALPHA);
  28
  29 // Validate the URL parameters.
  30 if ($id) {
  31     if (!$question = get_record('question', 'id', $id)) {
  32         print_error('questiondoesnotexist', 'question', $returnurl);
  33     }
  34     get_question_options($question);
  35 } else if ($categoryid && $qtype) { // only for creating new questions
  36     $question = new stdClass;
  37     $question->category = $categoryid;
  38     $question->qtype = $qtype;
  39 } else {
  40     print_error('notenoughdatatoeditaquestion', 'question', $returnurl);
  41 }
  42
  43 // Validate the question category.
  44 if (!$category = get_record('question_categories', 'id', $question->category)) {
  45     print_error('categorydoesnotexist', 'question', $returnurl);
  46 }
  47 if (!$returnurl) {
  48     $returnurl = "{$CFG->wwwroot}/question/edit.php?courseid={$category->course}";
  49     $SESSION->fromurl = $returnurl;
  50 }
  51
  52 // Validate the question type.
  53 if (!isset($QTYPES[$question->qtype])) {
  54     print_error('unknownquestiontype', 'question', $returnurl, $question->qtype);
  55 }
  56 $CFG->pagepath = 'question/type/' . $question->qtype;
  57
  58 // Check the user is logged in and has enough premissions.
  59 require_login($category->course, false);
  60 $coursecontext = get_context_instance(CONTEXT_COURSE, $category->course);
  61 require_capability('moodle/question:manage', $coursecontext);
  62
  63 // Create the question editing form.
  64 if ($wizardnow!==''){
  65     if (!method_exists($QTYPES[$question->qtype], 'next_wizard_form')){
  66         print_error('missingimportantcode', 'question', $returnurl, 'wizard form definition');
  67     } else {
  68         $mform = $QTYPES[$question->qtype]->next_wizard_form('question2.php', $question, $wizardnow);
  69     }
  70 } else {
  71     $mform = $QTYPES[$question->qtype]->create_editing_form('question2.php', $question, $category->course);
  72 }
  73
  74 if ($mform === null) {
  75     print_error('missingimportantcode', 'question', $returnurl, 'question editing form definition for "'.$question->qtype.'"');
  76 }
  77 $toform = $question; // send the question object and a few more parameters to the form
  78 $toform->returnurl = $returnurl;
  79 $mform->set_data($toform);
  80
  81 if ($mform->is_cancelled()){
  82     redirect($returnurl);
  83 } elseif ($data = $mform->get_data()){
  84     if (!empty($data->makecopy)) {
  85         $question->id = 0;  // causes a new question to be created.
  86         $question->hidden = 0; // Copies should not be hidden
  87     }
  88     $question = $QTYPES[$question->qtype]->save_question($question, $data, $COURSE, $wizardnow);
  89     if ($QTYPES[$qtype]->finished_edit_wizard($data)){
  90         if (optional_param('inpopup', 0, PARAM_BOOL)) {
  91             notify(get_string('changessaved'), '');
  92             close_window(3);
  93         } else {
  94             redirect($SESSION->returnurl);
  95         }
  96         die;
  97     } else {
  98         //useful for passing data to the next page which is not saved in the database
  99         $queryappend = '';
 100         if (isset($data->nextpageparam)){
 101             foreach ($data->nextpageparam as $key => $param){
 102                 $queryappend .= "&".urlencode($key).'='.urlencode($param);
 103             }
 104         }
 105         if ($question->id) {
 106             $nexturl = "question2.php?id=$question->id&returnurl=" . urlencode($returnurl);
 107         } else { // only for creating new questions
 108             $nexturl = "question2.php?category=$question->category&qtype=$question->qtype&returnurl=".urlencode($returnurl);
 109         }
 110         redirect($nexturl.'&wizardnow='.$data->wizard.$queryappend, '', 20);
 111     }
 112 } else {
 113
 114     $streditingquestion = get_string('editingquestion', 'question');
 115     if (isset($SESSION->modform->instance)) {
 116         // TODO: remove restriction to quiz
 117         $strediting = '<a href="' . $returnurl . '">' . get_string('editingquiz', 'quiz') . '</a> -> '.
 118                 $streditingquestion;
 119     } else {
 120         $strediting = '<a href="edit.php?courseid='.$category->course.'">'.
 121                 get_string("editquestions", "quiz").'</a> -> '.$streditingquestion;
 122     }
 123     print_header_simple($streditingquestion, '', $strediting);
 124
 125     // Display a heading, question editing form and possibly some extra content needed for
 126     // for this question type.
 127     $QTYPES[$question->qtype]->display_question_editing_page($mform, $question, $wizardnow);
 128
 129     print_footer($COURSE);
 130 }
 131 ?>