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
 122 $groupname = format_string($group->name);
 123
 124 print_header("$course->shortname: $strgroups",
 125              $course->fullname,
 126              "<a href=\"$CFG->wwwroot/course/view.php?id=$courseid\">$course->shortname</a> ".
 127              "-> <a href=\"$CFG->wwwroot/user/index.php?id=$courseid\">$strparticipants</a> ".
 128              "-> <a href=\"$CFG->wwwroot/group/index.php?id=$courseid\">$strgroups</a>".
 129              '-> '. get_string('adduserstogroup', 'group'), '', '', true, '', user_login_string($course, $USER));
 130
 131 ?>
 132 <div id="addmembersform">
 133     <h3 class="main"><?php print_string('adduserstogroup', 'group'); echo ": $groupname"; ?></h3>
 134
 135     <form id="assignform" method="post" action="members.php">
 136     <div>
 137     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 138     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
 139
 140     <table summary="" cellpadding="5" cellspacing="0">
 141     <tr>
 142       <td valign="top">
 143           <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
 144           <br />
 145           <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
 146                   onfocus="document.getElementById('assignform').add.disabled=true;
 147                            document.getElementById('assignform').remove.disabled=false;
 148                            document.getElementById('assignform').addselect.selectedIndex=-1;">
 149           <?php echo $groupmembersoptions ?>
 150           </select></td>
 151       <td valign="top">
 152 <?php // Hidden assignment? ?>
 153
 154         <?php check_theme_arrows(); ?>
 155         <p class="arrow_button">
 156             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
 157             <br />
 158             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
 159         </p>
 160       </td>
 161       <td valign="top">
 162           <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
 163           <br />
 164           <select name="addselect[]" size="20" id="addselect" multiple="multiple"
 165                   onfocus="document.getElementById('assignform').add.disabled=false;
 166                            document.getElementById('assignform').remove.disabled=true;
 167                            document.getElementById('assignform').removeselect.selectedIndex=-1;">
 168           <?php
 169             if ($potentialmemberscount > MAX_USERS_PER_PAGE) {
 170                 echo '<optgroup label="'.get_string('toomanytoshow').'"><option></option></optgroup>'."\n"
 171                         .'<optgroup label="'.get_string('trysearching').'"><option></option></optgroup>'."\n";
 172             } else {
 173                 echo $potentialmembersoptions;
 174             }
 175           ?>
 176          </select>
 177          <br />
 178          <label for="searchtext" class="accesshide"><?php p($strsearch) ?></label>
 179          <input type="text" name="searchtext" id="searchtext" size="30" value="<?php p($searchtext, true) ?>"
 180                   onfocus ="getElementById('assignform').add.disabled=true;
 181                             getElementById('assignform').remove.disabled=true;
 182                             getElementById('assignform').removeselect.selectedIndex=-1;
 183                             getElementById('assignform').addselect.selectedIndex=-1;"
 184                   onkeydown = "var keyCode = event.which ? event.which : event.keyCode;
 185                                if (keyCode == 13) {
 186                                     getElementById('assignform').previoussearch.value=1;
 187                                     getElementById('assignform').submit();
 188                                } " />
 189          <input name="search" id="search" type="submit" value="<?php p($strsearch) ?>" />
 190          <?php
 191               if (!empty($searchtext)) {
 192                   echo '<input name="showall" id="showall" type="submit" value="'.$strshowall.'" />'."\n";
 193               }
 194          ?>
 195        </td>
 196     </tr>
 197     <tr><td>
 198         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
 199     </td></tr>
 200     </table>
 201     </div>
 202     </form>
 203 </div>
 204
 205 <?php
 206     print_footer($course);
 207 ?>