group/members.php

   1 <?php
   2 /**
   3  * Add/remove members from group.
   4  *
   5  * @copyright &copy; 2006 The Open University
   6  * @author N.D.Freear AT open.ac.uk
   7  * @author J.White AT open.ac.uk
   8  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
   9  * @package groups
  10  */
  11 require_once('../config.php');
  12 require_once('lib.php');
  13
  14 define("MAX_USERS_PER_PAGE", 5000);
  15
  16 $groupid    = required_param('group', PARAM_INT);
  17 $searchtext = optional_param('searchtext', '', PARAM_RAW); // search string
  18 $showall    = optional_param('showall', 0, PARAM_BOOL);
  19
  20 if ($showall) {
  21     $searchtext = '';
  22 }
  23
  24 if (!$group = get_record('groups', 'id', $groupid)) {
  25     error('Incorrect group id');
  26 }
  27
  28 if (!$course = get_record('course', 'id', $group->courseid)) {
  29     print_error('invalidcourse');
  30 }
  31 $courseid = $course->id;
  32
  33 require_login($course);
  34 $context = get_context_instance(CONTEXT_COURSE, $courseid);
  35 require_capability('moodle/course:managegroups', $context);
  36
  37 $strsearch = get_string('search');
  38 $strshowall = get_string('showall');
  39 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid.'&group='.$group->id;
  40
  41
  42 if ($frm = data_submitted() and confirm_sesskey()) {
  43
  44     if (isset($frm->cancel)) {
  45         redirect($returnurl);
  46
  47     } else if (isset($frm->add) and !empty($frm->addselect)) {
  48
  49         foreach ($frm->addselect as $userid) {
  50             if (! $userid = clean_param($userid, PARAM_INT)) {
  51                 continue;
  52             }
  53             if (!groups_add_member($groupid, $userid)) {
  54                 print_error('erroraddremoveuser', 'group', $returnurl);
  55             }
  56         }
  57
  58     } else if (isset($frm->remove) and !empty($frm->removeselect)) {
  59
  60         foreach ($frm->removeselect as $userid) {
  61             if (! $userid = clean_param($userid, PARAM_INT)) {
  62                 continue;
  63             }
  64             if (!groups_remove_member($groupid, $userid)) {
  65                 print_error('erroraddremoveuser', 'group', $returnurl);
  66             }
  67
  68             // MDL-9983
  69             $eventdata = new object();
  70             $eventdata -> groupid = $groupid;
  71             $eventdata -> userid = $userid;
  72             events_trigger('group_user_removed', $eventdata);
  73         }
  74     }
  75 }
  76
  77 $groupmembersoptions = '';
  78 $groupmemberscount = 0;
  79
  80 if ($groupmembers = groups_get_members($groupid)) {
  81     foreach($groupmembers as $member) {
  82         $groupmembersoptions .= '<option value="'.$member->id.'">'.fullname($member, true).'</option>';
  83         $groupmemberscount ++;
  84     }
  85
  86 } else {
  87     $groupmembersoptions .= '<option>&nbsp;</option>';
  88 }
  89
  90 $potentialmembers = array();
  91 $potentialmembersoptions = '';
  92 $potentialmemberscount = 0;
  93
  94 $potentialmembers = groups_get_users_not_in_group($courseid, $groupid, $searchtext);
  95 if (!empty($potentialmembers)) {
  96     $potentialmemberscount = count($potentialmembers);
  97 } else {
  98     $potentialmemberscount = 0;
  99 }
 100 if ($potentialmemberscount <=  MAX_USERS_PER_PAGE) {
 101
 102     if ($potentialmembers != false) {
 103         // Put the groupings into a hash and sorts them
 104         foreach ($potentialmembers as $userid => $user) {
 105             $nonmembers[$userid] = fullname($user);
 106         }
 107         natcasesort($nonmembers);
 108
 109         // Print out the HTML
 110         foreach($nonmembers as $id => $name) {
 111             $potentialmembersoptions .= "<option value=\"$id\">$name</option>\n";
 112         }
 113     } else {
 114         $potentialmembersoptions .= '<option>&nbsp;</option>';
 115     }
 116 }
 117
 118 // Print the page and form
 119 $strgroups = get_string('groups');
 120 $strparticipants = get_string('participants');
 121 $stradduserstogroup = get_string('adduserstogroup', 'group');
 122
 123 $groupname = format_string($group->name);
 124
 125 $navlinks = array();
 126 $navlinks[] = array('name' => $strparticipants, 'link' => "$CFG->wwwroot/user/index.php?id=$courseid", 'type' => 'misc');
 127 $navlinks[] = array('name' => $strgroups, 'link' => "$CFG->wwwroot/group/index.php?id=$courseid", 'type' => 'misc');
 128 $navlinks[] = array('name' => $stradduserstogroup, 'link' => null, 'type' => 'misc');
 129 $navigation = build_navigation($navlinks);
 130
 131 print_header("$course->shortname: $strgroups", $course->fullname, $navigation, '', '', true, '', user_login_string($course, $USER));
 132
 133 ?>
 134 <div id="addmembersform">
 135     <h3 class="main"><?php print_string('adduserstogroup', 'group'); echo ": $groupname"; ?></h3>
 136
 137     <form id="assignform" method="post" action="members.php">
 138     <div>
 139     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 140     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
 141
 142     <table summary="" cellpadding="5" cellspacing="0">
 143     <tr>
 144       <td valign="top">
 145           <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
 146           <br />
 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 $groupmembersoptions ?>
 152           </select></td>
 153       <td valign="top">
 154 <?php // Hidden assignment? ?>
 155
 156         <?php check_theme_arrows(); ?>
 157         <p class="arrow_button">
 158             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
 159             <br />
 160             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
 161         </p>
 162       </td>
 163       <td valign="top">
 164           <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
 165           <br />
 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
 171             if ($potentialmemberscount > MAX_USERS_PER_PAGE) {
 172                 echo '<optgroup label="'.get_string('toomanytoshow').'"><option></option></optgroup>'."\n"
 173                         .'<optgroup label="'.get_string('trysearching').'"><option></option></optgroup>'."\n";
 174             } else {
 175                 echo $potentialmembersoptions;
 176             }
 177           ?>
 178          </select>
 179          <br />
 180          <label for="searchtext" class="accesshide"><?php p($strsearch) ?></label>
 181          <input type="text" name="searchtext" id="searchtext" size="30" value="<?php p($searchtext, true) ?>"
 182                   onfocus ="getElementById('assignform').add.disabled=true;
 183                             getElementById('assignform').remove.disabled=true;
 184                             getElementById('assignform').removeselect.selectedIndex=-1;
 185                             getElementById('assignform').addselect.selectedIndex=-1;"
 186                   onkeydown = "var keyCode = event.which ? event.which : event.keyCode;
 187                                if (keyCode == 13) {
 188                                     getElementById('assignform').previoussearch.value=1;
 189                                     getElementById('assignform').submit();
 190                                } " />
 191          <input name="search" id="search" type="submit" value="<?php p($strsearch) ?>" />
 192          <?php
 193               if (!empty($searchtext)) {
 194                   echo '<input name="showall" id="showall" type="submit" value="'.$strshowall.'" />'."\n";
 195               }
 196          ?>
 197        </td>
 198     </tr>
 199     <tr><td>
 200         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
 201     </td></tr>
 202     </table>
 203     </div>
 204     </form>
 205 </div>
 206
 207 <?php
 208     print_footer($course);
 209 ?>