mod/lesson/action/insertpage.php

   1 <?php // $Id$
   2 /**
   3  * Action for processing the form from addpage action and inserts the page.
   4  *
   5  * @version $Id$
   6  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   7  * @package lesson
   8  **/
   9     confirm_sesskey();
  10
  11     // check to see if the cancel button was pushed
  12     if (optional_param('cancel', '', PARAM_ALPHA)) {
  13         redirect("$CFG->wwwroot/mod/lesson/edit.php?id=$cm->id");
  14     }
  15
  16     $timenow = time();
  17
  18     $form = data_submitted();
  19     $newpage = new stdClass;
  20     $newanswer = new stdClass;
  21     if ($form->pageid) {
  22         // the new page is not the first page
  23         if (!$page = get_record("lesson_pages", "id", $form->pageid)) {
  24             error("Insert page: page record not found");
  25         }
  26         $newpage->lessonid = clean_param($lesson->id, PARAM_INT);
  27         $newpage->prevpageid = clean_param($form->pageid, PARAM_INT);
  28         $newpage->nextpageid = clean_param($page->nextpageid, PARAM_INT);
  29         $newpage->timecreated = $timenow;
  30         $newpage->qtype = $form->qtype;
  31         if (isset($form->qoption)) {
  32             $newpage->qoption = clean_param($form->qoption, PARAM_INT);
  33         } else {
  34             $newpage->qoption = 0;
  35         }
  36         if (isset($form->layout)) {
  37             $newpage->layout = clean_param($form->layout, PARAM_INT);
  38         } else {
  39             $newpage->layout = 0;
  40         }
  41         if (isset($form->display)) {
  42             $newpage->display = clean_param($form->display, PARAM_INT);
  43         } else {
  44             $newpage->display = 0;
  45         }
  46         $newpage->title = clean_param($form->title, PARAM_CLEANHTML);
  47         $newpage->contents = trim($form->contents);
  48         $newpage->title = addslashes($newpage->title);
  49         $newpageid = insert_record("lesson_pages", $newpage);
  50         if (!$newpageid) {
  51             error("Insert page: new page not inserted");
  52         }
  53         // update the linked list (point the previous page to this new one)
  54         if (!set_field("lesson_pages", "nextpageid", $newpageid, "id", $newpage->prevpageid)) {
  55             error("Insert page: unable to update next link");
  56         }
  57         if ($page->nextpageid) {
  58             // new page is not the last page
  59             if (!set_field("lesson_pages", "prevpageid", $newpageid, "id", $page->nextpageid)) {
  60                 error("Insert page: unable to update previous link");
  61             }
  62         }
  63     } else {
  64         // new page is the first page
  65         // get the existing (first) page (if any)
  66         if (!$page = get_record_select("lesson_pages", "lessonid = $lesson->id AND prevpageid = 0")) {
  67             // there are no existing pages
  68             $newpage->lessonid = $lesson->id;
  69             $newpage->prevpageid = 0; // this is a first page
  70             $newpage->nextpageid = 0; // this is the only page
  71             $newpage->timecreated = $timenow;
  72             $newpage->qtype = clean_param($form->qtype, PARAM_INT);
  73             if (isset($form->qoption)) {
  74                 $newpage->qoption = clean_param($form->qoption, PARAM_INT);
  75             } else {
  76                 $newpage->qoption = 0;
  77             }
  78             if (isset($form->layout)) {
  79                 $newpage->layout = clean_param($form->layout, PARAM_INT);
  80             } else {
  81                 $newpage->layout = 0;
  82             }
  83             if (isset($form->display)) {
  84                 $newpage->display = clean_param($form->display, PARAM_INT);
  85             } else {
  86                 $newpage->display = 0;
  87             }
  88             $newpage->title = clean_param($form->title, PARAM_CLEANHTML);
  89             $newpage->contents = trim($form->contents);
  90             $newpage->title = addslashes($newpage->title);
  91             $newpageid = insert_record("lesson_pages", $newpage);
  92             if (!$newpageid) {
  93                 error("Insert page: new first page not inserted");
  94             }
  95         } else {
  96             // there are existing pages put this at the start
  97             $newpage->lessonid = $lesson->id;
  98             $newpage->prevpageid = 0; // this is a first page
  99             $newpage->nextpageid = $page->id;
 100             $newpage->timecreated = $timenow;
 101             $newpage->qtype = clean_param($form->qtype, PARAM_INT);
 102             if (isset($form->qoption)) {
 103                 $newpage->qoption = clean_param($form->qoption, PARAM_INT);
 104             } else {
 105                 $newpage->qoption = 0;
 106             }
 107             if (isset($form->layout)) {
 108                 $newpage->layout = clean_param($form->layout, PARAM_INT);
 109             } else {
 110                 $newpage->layout = 0;
 111             }
 112             if (isset($form->display)) {
 113                 $newpage->display = clean_param($form->display, PARAM_INT);
 114             } else {
 115                 $newpage->display = 0;
 116             }
 117             $newpage->title = clean_param($form->title, PARAM_CLEANHTML);
 118             $newpage->contents = trim($form->contents);
 119             $newpage->title = addslashes($newpage->title);
 120             $newpageid = insert_record("lesson_pages", $newpage);
 121             if (!$newpageid) {
 122                 error("Insert page: first page not inserted");
 123             }
 124             // update the linked list
 125             if (!set_field("lesson_pages", "prevpageid", $newpageid, "id", $newpage->nextpageid)) {
 126                 error("Insert page: unable to update link");
 127             }
 128         }
 129     }
 130     // now add the answers
 131     if ($form->qtype == LESSON_ESSAY) {
 132         $newanswer->lessonid = $lesson->id;
 133         $newanswer->pageid = $newpageid;
 134         $newanswer->timecreated = $timenow;
 135         if (isset($form->jumpto[0])) {
 136             $newanswer->jumpto = clean_param($form->jumpto[0], PARAM_INT);
 137         }
 138         if (isset($form->score[0])) {
 139             $newanswer->score = clean_param($form->score[0], PARAM_INT);
 140         }
 141         $newanswerid = insert_record("lesson_answers", $newanswer);
 142         if (!$newanswerid) {
 143             error("Insert Page: answer record not inserted");
 144         }
 145     } else {
 146         if ($form->qtype == LESSON_MATCHING) {
 147             // need to add two to offset correct response and wrong response
 148             $lesson->maxanswers = $lesson->maxanswers + 2;
 149         }
 150         for ($i = 0; $i < $lesson->maxanswers; $i++) {
 151             if (!empty($form->answer[$i]) and trim(strip_tags($form->answer[$i]))) { // strip_tags because the HTML editor adds <p><br />...
 152                 $newanswer->lessonid = $lesson->id;
 153                 $newanswer->pageid = $newpageid;
 154                 $newanswer->timecreated = $timenow;
 155                 $newanswer->answer = trim($form->answer[$i]);
 156                 if (isset($form->response[$i])) {
 157                     $newanswer->response = trim($form->response[$i]);
 158                 }
 159                 if (isset($form->jumpto[$i])) {
 160                     $newanswer->jumpto = clean_param($form->jumpto[$i], PARAM_INT);
 161                 }
 162                 if ($lesson->custom) {
 163                     if (isset($form->score[$i])) {
 164                         $newanswer->score = clean_param($form->score[$i], PARAM_INT);
 165                     }
 166                 }
 167                 $newanswerid = insert_record("lesson_answers", $newanswer);
 168                 if (!$newanswerid) {
 169                     error("Insert Page: answer record $i not inserted");
 170                 }
 171             } else {
 172                 if ($form->qtype == LESSON_MATCHING) {
 173                     if ($i < 2) {
 174                         $newanswer->lessonid = $lesson->id;
 175                         $newanswer->pageid = $newpageid;
 176                         $newanswer->timecreated = $timenow;
 177                         $newanswerid = insert_record("lesson_answers", $newanswer);
 178                         if (!$newanswerid) {
 179                             error("Insert Page: answer record $i not inserted");
 180                         }
 181                     }
 182                 } else {
 183                     break;
 184                 }
 185             }
 186         }
 187     }
 188
 189     lesson_set_message(get_string('insertedpage', 'lesson').': '.format_string($newpage->title, true), 'notifysuccess');
 190     redirect("$CFG->wwwroot/mod/lesson/edit.php?id=$cm->id");
 191 ?>