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   1  <?php // $Id$
   2  /**
   3   * Page for moving questions
   4   *
   5   * @author me@jamiep.org
   6   * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   7   * @package questionbank
   8   */
   9  
  10  // Includes.
  11  require_once(dirname(__FILE__) . '/../config.php');
  12  require_once(dirname(__FILE__) . '/editlib.php');
  13  require_once($CFG->dirroot.'/question/contextmoveq_form.php');
  14  
  15  $ids = required_param('ids',PARAM_SEQUENCE); // question ids
  16  
  17  if (!$cmid = optional_param('cmid', 0, PARAM_INT)){
  18      $courseid = required_param('courseid', PARAM_INT);
  19  }
  20  
  21  $tocatid = required_param('tocatid', PARAM_INT);
  22  $returnurl = optional_param('returnurl', 0, PARAM_LOCALURL);
  23  
  24  $thispageurl = new moodle_url();
  25  $thispageurl->params(compact('tocatid', 'ids', 'returnurl'));
  26  
  27  if ($cmid){
  28      list($module, $cm) = get_module_from_cmid($cmid);
  29      require_login($cm->course, false, $cm);
  30      $thiscontext = get_context_instance(CONTEXT_MODULE, $cmid);
  31      if (!$returnurl) {
  32          $returnurl = "{$CFG->wwwroot}/question/edit.php?cmid={$cm->id}";
  33      }
  34      $thispageurl->param('cmid', $cmid);
  35  } elseif ($courseid) {
  36      require_login($courseid, false);
  37      $thiscontext = get_context_instance(CONTEXT_COURSE, $courseid);
  38      $module = null;
  39      $cm = null;
  40      if (!$returnurl) {
  41          $returnurl = "{$CFG->wwwroot}/question/edit.php?courseid={$COURSE->id}";
  42      }
  43      $thispageurl->param('courseid', $COURSE->id);
  44  } else {
  45      error('Need to pass courseid or cmid to this script.');
  46  }
  47  $contexts = new question_edit_contexts($thiscontext);
  48  
  49  
  50  if (!$questions = get_records_sql("SELECT q.*, c.contextid FROM {$CFG->prefix}question q, {$CFG->prefix}question_categories c  WHERE q.id IN ($ids) AND c.id = q.category")) {
  51      print_error('questiondoesnotexist', 'question', $returnurl);
  52  }
  53  if (!$tocat = get_record('question_categories', 'id', $tocatid)){
  54      print_error('categorydoesnotexist', 'question', $returnurl);
  55  }
  56  $tocat->context = get_context_instance_by_id($tocat->contextid);
  57  require_capability('moodle/question:add', $tocat->context);
  58  $tocoursefilesid =  get_filesdir_from_context($tocat->context);
  59  $urls = array();
  60  
  61  if ($tocoursefilesid == SITEID){
  62      $toareaname = get_string('filesareasite', 'question');
  63  } else {
  64      $toareaname = get_string('filesareacourse', 'question');
  65  }
  66  $fromcoursefilesid = 0;
  67  foreach (array_keys($questions) as $id){
  68      question_require_capability_on($questions[$id], 'move');
  69      get_question_options($questions[$id]);
  70      $questions[$id]->context = get_context_instance_by_id($questions[$id]->contextid);
  71      $thisfilesid =  get_filesdir_from_context($questions[$id]->context);
  72      if ($fromcoursefilesid && $thisfilesid != $fromcoursefilesid){
  73         error('You can\'t use this script to move questions that have files associated with them from different areas.');
  74      } else {
  75         $fromcoursefilesid =  $thisfilesid;
  76      }
  77      if ($tocoursefilesid != $fromcoursefilesid){
  78          $urls = array_merge_recursive($urls, $QTYPES[$questions[$id]->qtype]->find_file_links($questions[$id], $fromcoursefilesid));
  79      }
  80  }
  81  
  82  $brokenurls = array();
  83  foreach (array_keys($urls) as $url){
  84      if (!file_exists($CFG->dataroot."/$fromcoursefilesid/".$url)){
  85          $brokenurls[] = $url;
  86      }
  87  }
  88  if ($fromcoursefilesid == SITEID){
  89      $fromareaname = get_string('filesareasite', 'question');
  90  } else {
  91      $fromareaname = get_string('filesareacourse', 'question');
  92  }
  93  
  94  $contextmoveform = new question_context_move_question_form($thispageurl,
  95          compact('urls', 'fromareaname', 'toareaname', 'brokenurls',
  96                      'fromcoursefilesid', 'tocoursefilesid'));
  97  if ($contextmoveform->is_cancelled()){
  98      redirect($returnurl);
  99  }elseif ($moveformdata = $contextmoveform->get_data()) {
 100      if (isset($moveformdata->urls) && is_array($moveformdata->urls)){
 101          check_dir_exists($CFG->dataroot."/$tocoursefilesid/", true);
 102          $flipurls = array_keys($urls);
 103          //actions on files
 104          foreach ($moveformdata->urls as $key => $urlaction){
 105              $source = $CFG->dataroot."/$fromcoursefilesid/".$flipurls[$key];
 106              $destination = $flipurls[$key];
 107              if (($urlaction != QUESTION_FILEDONOTHING) && ($urlaction != QUESTION_FILEMOVELINKSONLY)){
 108                  // Ensure the target folder exists.
 109                  check_dir_exists(dirname($CFG->dataroot."/$tocoursefilesid/".$destination), true);
 110  
 111                  // Then make sure the destination file name does not exist. If it does, change the name to be unique.
 112                  while (file_exists($CFG->dataroot."/$tocoursefilesid/".$destination)){
 113                      $matches = array();
 114                      //check for '_'. copyno after filename, before extension.
 115                      if (preg_match('!\_([0-9]+)(\.[^\.\\/]+)?$!', $destination, $matches)){
 116                          $copyno = $matches[1]+1;
 117                      } else {
 118                          $copyno = 1;
 119                      }
 120                      //replace old copy no with incremented one.
 121                      $destination = preg_replace('!(\_[0-9]+)?(\.[^\.\\/]+)?$!', '_'.$copyno.'\\2', $destination, 1);
 122                  }
 123              }
 124              switch ($urlaction){
 125                  case QUESTION_FILECOPY :
 126                      if (!copy($source, $CFG->dataroot."/$tocoursefilesid/".$destination)){
 127                          print_error('errorfilecannotbecopied', 'question', $returnurl, $source);
 128                      }
 129                      break;
 130                  case QUESTION_FILEMOVE :
 131                      if (!rename($source, $CFG->dataroot."/$tocoursefilesid/".$destination)){
 132                          print_error('errorfilecannotbemoved', 'question', $returnurl, $source);
 133                      }
 134                      break;
 135                  case QUESTION_FILEMOVELINKSONLY :
 136                  case QUESTION_FILEDONOTHING :
 137                      break;
 138                  default :
 139                      error('Invalid action selected!', $returnurl);
 140              }
 141              //now search and replace urls in questions.
 142              switch ($urlaction){
 143                  case QUESTION_FILECOPY :
 144                  case QUESTION_FILEMOVE :
 145                  case QUESTION_FILEMOVELINKSONLY :
 146                      $url = $flipurls[$key];
 147                      $questionswithlinks = array_unique($urls[$url]);
 148                      foreach ($questionswithlinks as $questionid){
 149                          $QTYPES[$questions[$questionid]->qtype]->replace_file_links($questions[$questionid], $fromcoursefilesid, $tocoursefilesid, $url, $destination);
 150                      }
 151                      break;
 152                  case  QUESTION_FILEDONOTHING :
 153                      break;
 154                  default :
 155                      error('Invalid action selected!', $returnurl);
 156                      break;
 157              }
 158  
 159  
 160          }
 161      }
 162  
 163  /// Now move questions.
 164      if (!question_move_questions_to_category($ids, $tocat->id)) {
 165          print_error('errormovingquestions', 'question', $returnurl, $ids);
 166      }
 167      redirect($returnurl);
 168  }
 169  
 170  $streditingcategories = get_string('editcategories', 'quiz');
 171  $crumbs = array();
 172  if ($cmid) {
 173      // Page header
 174      $context = get_context_instance(CONTEXT_MODULE, $cm->id);
 175      $strupdatemodule = has_capability('moodle/course:manageactivities', $context)
 176          ? update_module_button($cm->id, $COURSE->id, get_string('modulename', $cm->modname))
 177          : "";
 178      $crumbs[] = array('name' => get_string('modulenameplural', $cm->modname),
 179                          'link' => "$CFG->wwwroot/mod/{$cm->modname}/index.php?id=$COURSE->id",
 180                          'type' => 'activity');
 181      $crumbs[] = array('name' => format_string($module->name),
 182                          'link' => "$CFG->wwwroot/mod/{$cm->modname}/view.php?id={$cm->id}",
 183                          'type' => 'title');
 184  } else {
 185      // Print basic page layout.
 186      $strupdatemodule = '';
 187  }
 188  $strmovingquestions = get_string('movingquestions', 'question');
 189  $crumbs[] = array('name' => $strmovingquestions, 'link' => '', 'type' => 'title');
 190  
 191  $navigation = build_navigation($crumbs);
 192  print_header_simple($strmovingquestions, '', $navigation, "", "", true, $strupdatemodule);
 193  
 194  // print tabs
 195  if ($cm!==null) {
 196      $currenttab = 'edit';
 197      $mode = 'questions';
 198      ${$cm->modname} = $module;
 199      include($CFG->dirroot."/mod/{$cm->modname}/tabs.php");
 200  } else {
 201      $currenttab = 'questions';
 202      include ('tabs.php');
 203  }
 204  //parameter for get_string
 205  $questionsstr = new object();
 206  $questionsstr->tocontext = print_context_name($tocat->context);
 207  $questionsstr->fromareaname = $fromareaname;
 208  
 209  //comma seperated string "'xx', 'cx', 'sdf' and 'fgdhfg'"
 210  $questionnamestojoin = array();
 211  foreach ($questions as $question){
 212     $questionnamestojoin[] =  $question->name;
 213  }
 214  $tojoincount = count($questionnamestojoin);
 215  
 216  if ($tojoincount > 1){
 217      $a = new object();
 218      $a->one = $questionnamestojoin[$tojoincount -2].'"</strong>';
 219      $a->two = '<strong>"'.$questionnamestojoin[$tojoincount -1];
 220      $questionnamestojoin[$tojoincount -2] = get_string('and', '', $a);
 221      unset($questionnamestojoin[$tojoincount -1]);
 222  }
 223  $questionsstr->questions = '<strong>"'.join($questionnamestojoin, '"</strong>, <strong>"').'"</strong>';
 224  
 225  if (count($urls)){
 226      $defaults = array();
 227      for ($default_key = 0; $default_key < count($urls); $default_key++){
 228          $defaults['urls'][$default_key] = QUESTION_FILECOPY;
 229      }
 230      $contextmoveform->set_data($defaults);
 231  
 232      //some parameters for get_string
 233      $questionsstr->urlcount = count($urls);
 234  
 235      $questionsstr->toareaname = $toareaname;
 236  
 237      print_box(get_string('movingquestionsandfiles', 'question', $questionsstr), 'boxwidthnarrow boxaligncenter generalbox');
 238  } else {
 239      print_box(get_string('movingquestionsnofiles', 'question', $questionsstr), 'boxwidthnarrow boxaligncenter generalbox');
 240  }
 241  $contextmoveform->display();
 242  print_footer($COURSE);
 243  ?>