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   1  <?php  // $Id: extendenrol.php,v 1.12 2007/08/17 19:09:26 nicolasconnault Exp $
   2  require_once("../config.php");
   3  
   4  $id    = required_param('id', PARAM_INT);              // course id
   5  $users = optional_param('userid', array(), PARAM_INT); // array of user id
   6  
   7  if (! $course = get_record('course', 'id', $id)) {
   8      error("Course ID is incorrect");
   9  }
  10  
  11  $context = get_context_instance(CONTEXT_COURSE, $id);
  12  require_login($course->id);
  13  
  14  // to extend enrolments current user needs to be able to do role assignments
  15  require_capability('moodle/role:assign', $context);
  16  $today = time();
  17  $today = make_timestamp(date('Y', $today), date('m', $today), date('d', $today), 0, 0, 0);
  18  if ((count($users) > 0) and ($form = data_submitted()) and confirm_sesskey()) {
  19      if (count($form->userid) != count($form->extendperiod) || count($form->userid) != count($form->extendbase)) {
  20          error('Parameters malformation', $CFG->wwwroot.'/user/index.php?id='.$id);
  21      }
  22  
  23      foreach ($form->userid as $k => $v) {
  24          // find all roles this student have in this course
  25          if ($students = get_records_sql("SELECT ra.id, ra.roleid, ra.timestart, ra.timeend
  26                                         FROM {$CFG->prefix}role_assignments ra
  27                                         WHERE userid = $v
  28                                         AND contextid = $context->id")) {
  29              // enrol these users again, with time extension
  30              // not that this is not necessarily a student role
  31              foreach ($students as $student) {
  32                  // only extend if the user can make role assignments on this role
  33                  if (user_can_assign($context, $student->roleid)) {
  34                      switch($form->extendperiod[$k]) {
  35                          case 0: // No change
  36                              break;
  37                          case -1: // unlimited
  38                              $student->timeend = 0;
  39                              break;
  40                          default: // extend
  41                              switch($form->extendbase[$k]) {
  42                                  case 0: // course start date
  43                                      $student->timeend = $course->startdate + $form->extendperiod[$k];
  44                                      break;
  45                                  case 1: // student enrolment start date
  46                                      // we check for student enrolment date because Moodle versions before 1.9 did not set this for
  47                                      // unlimited enrolment courses, so it might be 0
  48                                      if($student->timestart > 0) {
  49                                          $student->timeend = $student->timestart + $form->extendperiod[$k];
  50                                      }
  51                                      break;
  52                                  case 2: // student enrolment start date
  53                                      // enrolment end equals 0 means Unlimited, so adding some time to that will still yield Unlimited
  54                                      if($student->timeend > 0) {
  55                                          $student->timeend = $student->timeend + $form->extendperiod[$k];
  56                                      }
  57                                      break;
  58                                  case 3: // current date
  59                                      $student->timeend = $today + $form->extendperiod[$k];
  60                                      break;
  61                                  case 4: // course enrolment start date
  62                                      if($course->enrolstartdate > 0) {
  63                                          $student->timeend = $course->enrolstartdate + $form->extendperiod[$k];
  64                                      }
  65                                      break;
  66                                  case 5: // course enrolment end date
  67                                      if($course->enrolenddate > 0) {
  68                                          $student->timeend = $course->enrolenddate + $form->extendperiod[$k];
  69                                      }
  70                                      break;
  71                              }
  72                      }
  73                      role_assign($student->roleid, $v, 0, $context->id, $student->timestart, $student->timeend, 0);
  74                  }
  75              }
  76          }
  77      }
  78  
  79      redirect("$CFG->wwwroot/user/index.php?id=$id", get_string('changessaved'));
  80  }
  81  
  82  /// Print headers
  83  
  84  $navlinks = array();
  85  $navlinks[] = array('name' => get_string('extendenrol'), 'link' => null, 'type' => 'misc');
  86  $navigation = build_navigation($navlinks);
  87  
  88  print_header("$course->shortname: ".get_string('extendenrol'), $course->fullname, $navigation, "", "", true, "&nbsp;", navmenu($course));
  89  
  90  $timeformat = get_string('strftimedate');
  91  $unlimited = get_string('unlimited');
  92  $periodmenu[-1] = $unlimited;
  93  for ($i=1; $i<=365; $i++) {
  94      $seconds = $i * 86400;
  95      $periodmenu[$seconds] = get_string('numdays', '', $i);
  96  }
  97  
  98  // this will contain all available the based On select options, but we'll disable some on them on a per user basis
  99  $basemenu[0] = get_string('startdate') . ' (' . userdate($course->startdate, $timeformat) . ')';
 100  $basemenu[1] = get_string('enrolmentstart');
 101  $basemenu[2] = get_string('enrolmentend');
 102  if($course->enrollable != 2 || ($course->enrolstartdate == 0 || $course->enrolstartdate <= $today) && ($course->enrolenddate == 0 || $course->enrolenddate > $today)) {
 103      $basemenu[3] = get_string('today') . ' (' . userdate($today, $timeformat) . ')' ;
 104  }
 105  if($course->enrollable == 2) {
 106      if($course->enrolstartdate > 0) {
 107          $basemenu[4] = get_string('courseenrolstartdate') . ' (' . userdate($course->enrolstartdate, $timeformat) . ')';
 108      }
 109      if($course->enrolenddate > 0) {
 110          $basemenu[5] = get_string('courseenrolenddate') . ' (' . userdate($course->enrolenddate, $timeformat) . ')';
 111      }
 112  }
 113  
 114  $title = get_string('extendenrol');
 115  print_heading($title . helpbutton('extendenrol', $title, 'moodle', true, false, '', true));
 116  echo "<form method=\"post\" action=\"extendenrol.php\">\n";
 117  echo '<input type="hidden" name="id" value="'.$course->id.'" />';
 118  echo '<input type="hidden" name="sesskey" value="'.$USER->sesskey.'" />';
 119  $table->head  = array (get_string('fullname'), get_string('enrolmentstart'), get_string('enrolmentend'), get_string('extendperiod'), get_string('startingfrom'));
 120  $table->align = array ('left', 'center', 'center', 'center');
 121  $table->width = "600";
 122  $nochange = get_string('nochange');
 123  $notavailable = get_string('notavailable');
 124  foreach ($_POST as $k => $v) {
 125      if (preg_match('/^user(\d+)$/',$k,$m)) {
 126  
 127          if (!($user = get_record_sql("SELECT * FROM {$CFG->prefix}user u
 128                                      INNER JOIN {$CFG->prefix}role_assignments ra ON u.id=ra.userid
 129                                      WHERE u.id={$m[1]} AND ra.contextid = $context->id"))) {
 130              continue;
 131          }
 132          $userbasemenu = $basemenu;
 133          if ($user->timestart) {
 134              $timestart = userdate($user->timestart, $timeformat);
 135          } else {
 136              $timestart = $notavailable;
 137              unset($userbasemenu[1]);
 138          }
 139          if ($user->timeend) {
 140              $timeend = userdate($user->timeend, $timeformat);
 141          } else {
 142              $timeend = $unlimited;
 143              unset($userbasemenu[2]);
 144          }
 145          $checkbox = choose_from_menu($periodmenu, "extendperiod[{$m[1]}]", "0", $nochange, '', '0', true);
 146          $checkbox2 = choose_from_menu($userbasemenu, "extendbase[{$m[1]}]", "2", "", '', '0', true);
 147          $table->data[] = array(
 148          fullname($user, true),
 149          $timestart,
 150          $timeend,
 151          '<input type="hidden" name="userid['.$m[1].']" value="'.$m[1].'" />'.$checkbox,
 152          $checkbox2
 153          );
 154      }
 155  }
 156  print_table($table);
 157  echo "\n<div style=\"width:100%;text-align:center;\"><input type=\"submit\" value=\"".get_string('savechanges')."\" /></div>\n</form>\n";
 158  
 159  print_footer($course);
 160  ?>