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   1  <?php
   2  
   3  // This file is part of Moodle - http://moodle.org/
   4  //
   5  // Moodle is free software: you can redistribute it and/or modify
   6  // it under the terms of the GNU General Public License as published by
   7  // the Free Software Foundation, either version 3 of the License, or
   8  // (at your option) any later version.
   9  //
  10  // Moodle is distributed in the hope that it will be useful,
  11  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  // GNU General Public License for more details.
  14  //
  15  // You should have received a copy of the GNU General Public License
  16  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17  
  18  /**
  19   * Add/remove group from grouping.
  20   *
  21   * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   * @package   core_group
  24   */
  25  
  26  require_once('../config.php');
  27  require_once ('lib.php');
  28  
  29  $groupingid = required_param('id', PARAM_INT);
  30  
  31  $PAGE->set_url('/group/assign.php', array('id'=>$groupingid));
  32  
  33  if (!$grouping = $DB->get_record('groupings', array('id'=>$groupingid))) {
  34      print_error('invalidgroupid');
  35  }
  36  
  37  if (!$course = $DB->get_record('course', array('id'=>$grouping->courseid))) {
  38      print_error('invalidcourse');
  39  }
  40  $courseid = $course->id;
  41  
  42  require_login($course);
  43  $context = context_course::instance($courseid);
  44  require_capability('moodle/course:managegroups', $context);
  45  
  46  $returnurl = $CFG->wwwroot.'/group/groupings.php?id='.$courseid;
  47  
  48  
  49  if ($frm = data_submitted() and confirm_sesskey()) {
  50  
  51      if (isset($frm->cancel)) {
  52          redirect($returnurl);
  53  
  54      } else if (isset($frm->add) and !empty($frm->addselect)) {
  55          foreach ($frm->addselect as $groupid) {
  56              // Ask this method not to purge the cache, we'll do it ourselves afterwards.
  57              groups_assign_grouping($grouping->id, (int)$groupid, null, false);
  58          }
  59          // Invalidate the course groups cache seeing as we've changed it.
  60          cache_helper::invalidate_by_definition('core', 'groupdata', array(), array($courseid));
  61  
  62      } else if (isset($frm->remove) and !empty($frm->removeselect)) {
  63          foreach ($frm->removeselect as $groupid) {
  64              // Ask this method not to purge the cache, we'll do it ourselves afterwards.
  65              groups_unassign_grouping($grouping->id, (int)$groupid, false);
  66          }
  67          // Invalidate the course groups cache seeing as we've changed it.
  68          cache_helper::invalidate_by_definition('core', 'groupdata', array(), array($courseid));
  69      }
  70  }
  71  
  72  
  73  $currentmembers = array();
  74  $potentialmembers  = array();
  75  
  76  if ($groups = $DB->get_records('groups', array('courseid'=>$courseid), 'name')) {
  77      if ($assignment = $DB->get_records('groupings_groups', array('groupingid'=>$grouping->id))) {
  78          foreach ($assignment as $ass) {
  79              $currentmembers[$ass->groupid] = $groups[$ass->groupid];
  80              unset($groups[$ass->groupid]);
  81          }
  82      }
  83      $potentialmembers = $groups;
  84  }
  85  
  86  $currentmembersoptions = '';
  87  $currentmemberscount = 0;
  88  if ($currentmembers) {
  89      foreach($currentmembers as $group) {
  90          $currentmembersoptions .= '<option value="'.$group->id.'.">'.format_string($group->name).'</option>';
  91          $currentmemberscount ++;
  92      }
  93  
  94      // Get course managers so they can be highlighted in the list
  95      if ($managerroles = get_config('', 'coursecontact')) {
  96          $coursecontactroles = explode(',', $managerroles);
  97          foreach ($coursecontactroles as $roleid) {
  98              $role = $DB->get_record('role', array('id'=>$roleid));
  99              $managers = get_role_users($roleid, $context, true, 'u.id', 'u.id ASC');
 100          }
 101      }
 102  } else {
 103      $currentmembersoptions .= '<option>&nbsp;</option>';
 104  }
 105  
 106  $potentialmembersoptions = '';
 107  $potentialmemberscount = 0;
 108  if ($potentialmembers) {
 109      foreach($potentialmembers as $group) {
 110          $potentialmembersoptions .= '<option value="'.$group->id.'.">'.format_string($group->name).'</option>';
 111          $potentialmemberscount ++;
 112      }
 113  } else {
 114      $potentialmembersoptions .= '<option>&nbsp;</option>';
 115  }
 116  
 117  // Print the page and form
 118  $strgroups = get_string('groups');
 119  $strparticipants = get_string('participants');
 120  $straddgroupstogroupings = get_string('addgroupstogroupings', 'group');
 121  
 122  $groupingname = format_string($grouping->name);
 123  
 124  navigation_node::override_active_url(new moodle_url('/group/index.php', array('id'=>$course->id)));
 125  $PAGE->set_pagelayout('admin');
 126  
 127  $PAGE->navbar->add($strparticipants, new moodle_url('/user/index.php', array('id'=>$courseid)));
 128  $PAGE->navbar->add($strgroups, new moodle_url('/group/index.php', array('id'=>$courseid)));
 129  $PAGE->navbar->add($straddgroupstogroupings);
 130  
 131  /// Print header
 132  $PAGE->set_title("$course->shortname: $strgroups");
 133  $PAGE->set_heading($course->fullname);
 134  echo $OUTPUT->header();
 135  
 136  ?>
 137  <div id="addmembersform">
 138      <h3 class="main"><?php print_string('addgroupstogroupings', 'group'); echo ": $groupingname"; ?></h3>
 139      <form id="assignform" method="post" action="">
 140      <div>
 141      <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 142      <table summary="" class="generaltable generalbox groupmanagementtable boxaligncenter">
 143      <tr>
 144        <td id="existingcell">
 145            <label for="removeselect"><?php print_string('existingmembers', 'group', $currentmemberscount); ?></label>
 146            <div class="userselector" id="removeselect_wrapper">
 147            <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
 148                    onfocus="document.getElementById('assignform').add.disabled=true;
 149                             document.getElementById('assignform').remove.disabled=false;
 150                             document.getElementById('assignform').addselect.selectedIndex=-1;">
 151            <?php echo $currentmembersoptions ?>
 152            </select></div></td>
 153        <td id="buttonscell">
 154          <p class="arrow_button">
 155              <input name="add" id="add" type="submit"
 156                     value="<?php echo $OUTPUT->larrow().'&nbsp;'.get_string('add'); ?>"
 157                     title="<?php print_string('add'); ?>" /><br>
 158              <input name="remove" id="remove" type="submit"
 159                     value="<?php echo get_string('remove').'&nbsp;'.$OUTPUT->rarrow(); ?>"
 160                     title="<?php print_string('remove'); ?>" />
 161          </p>
 162        </td>
 163        <td id="potentialcell">
 164            <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); ?></label>
 165            <div class="userselector" id="addselect_wrapper">
 166            <select name="addselect[]" size="20" id="addselect" multiple="multiple"
 167                    onfocus="document.getElementById('assignform').add.disabled=false;
 168                             document.getElementById('assignform').remove.disabled=true;
 169                             document.getElementById('assignform').removeselect.selectedIndex=-1;">
 170           <?php echo $potentialmembersoptions ?>
 171           </select>
 172            </div>
 173         </td>
 174      </tr>
 175      <tr><td colspan="3" id="backcell">
 176          <input type="submit" name="cancel" value="<?php print_string('backtogroupings', 'group'); ?>" />
 177      </td></tr>
 178      </table>
 179      </div>
 180      </form>
 181  </div>
 182  
 183  <?php
 184      echo $OUTPUT->footer();