group/assign.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     $searchtext = '';
  22 }
  23
  24
  25 require_login();
  26 if (!$group = get_record('groups', 'id', $groupid)) {
  27     error('Incorrect group id');
  28 }
  29
  30 if (! $course = get_record('course', 'id', $group->courseid)) {
  31     print_error('invalidcourse');
  32 }
  33
  34 require_login($course);
  35 $courseid = $course->id;
  36
  37 $strsearch = get_string('search');
  38 $strshowall = get_string('showall');
  39 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid.'&group='.$groupid;
  40
  41 $context = get_context_instance(CONTEXT_COURSE, $courseid);
  42 require_capability('moodle/course:managegroups', $context);
  43
  44     if ($frm = data_submitted() and confirm_sesskey()) {
  45
  46         if (isset($frm->cancel)) {
  47             redirect($returnurl);
  48
  49         } else if (isset($frm->add) and !empty($frm->addselect)) {
  50
  51             foreach ($frm->addselect as $userid) {
  52                 if (! $userid = clean_param($userid, PARAM_INT)) {
  53                     continue;
  54                 }
  55                 if (!groups_add_member($groupid, $userid)) {
  56                     print_error('erroraddremoveuser', 'group', $returnurl);
  57                 }
  58             }
  59
  60         } else if (isset($frm->remove) and !empty($frm->removeselect)) {
  61
  62             foreach ($frm->removeselect as $userid) {
  63                 if (! $userid = clean_param($userid, PARAM_INT)) {
  64                     continue;
  65                 }
  66                 if (!groups_remove_member($groupid, $userid)) {
  67                     print_error('erroraddremoveuser', 'group', $returnurl);
  68                 }
  69
  70                 // MDL-9983
  71                 $eventdata = new object();
  72                 $eventdata -> groupid = $groupid;
  73                 $eventdata -> userid = $userid;
  74                 events_trigger('group_user_removed', $eventdata);
  75             }
  76         }
  77     }
  78
  79     $groupmembers = groups_get_members($groupid);
  80     $groupmembersoptions = '';
  81     $groupmemberscount = 0;
  82     if ($groupmembers != false) {
  83         // Put the groupings into a hash and sorts them
  84         foreach ($groupmembers as $userid) {
  85             $listmembers[$userid] = groups_get_user_displayname($userid, $courseid);
  86             $groupmemberscount ++;
  87         }
  88         natcasesort($listmembers);
  89
  90         // Print out the HTML
  91         foreach($listmembers as $id => $name) {
  92             $groupmembersoptions .= "<option value=\"$id\">$name</option>\n";
  93         }
  94     } else {
  95         $groupmembersoptions .= '<option>&nbsp;</option>';
  96     }
  97
  98     $potentialmembers = array();
  99     $potentialmembersoptions = '';
 100     $potentialmemberscount = 0;
 101
 102     $potentialmembers = groups_get_users_not_in_group($courseid, $groupid, $searchtext);
 103     if (!empty($potentialmembers)) {
 104         $potentialmemberscount = count($potentialmembers);
 105     } else {
 106         $potentialmemberscount = 0;
 107     }
 108     if ($potentialmemberscount <=  MAX_USERS_PER_PAGE) {
 109
 110         if ($potentialmembers != false) {
 111             // Put the groupings into a hash and sorts them
 112             foreach ($potentialmembers as $userid => $user) {
 113                 $nonmembers[$userid] = fullname($user);
 114                 //$nonmembers[$userid] = groups_get_user_displayname($userid, $courseid);
 115             }
 116             natcasesort($nonmembers);
 117
 118             // Print out the HTML
 119             foreach($nonmembers as $id => $name) {
 120                 $potentialmembersoptions .= "<option value=\"$id\">$name</option>\n";
 121             }
 122         } else {
 123             $potentialmembersoptions .= '<option>&nbsp;</option>';
 124         }
 125     }
 126
 127     // Print the page and form
 128     $strgroups = get_string('groups');
 129     $strparticipants = get_string('participants');
 130
 131     $groupname = groups_get_group_displayname($groupid);
 132
 133     print_header("$course->shortname: $strgroups",
 134                  $course->fullname,
 135                  "<a href=\"$CFG->wwwroot/course/view.php?id=$courseid\">$course->shortname</a> ".
 136                  "-> <a href=\"$CFG->wwwroot/user/index.php?id=$courseid\">$strparticipants</a> ".
 137                  "-> <a href=\"$CFG->wwwroot/group/index.php?id=$courseid\">$strgroups</a>".
 138                  '-> '. get_string('adduserstogroup', 'group'), '', '', true, '', user_login_string($course, $USER));
 139
 140 ?>
 141 <div id="addmembersform">
 142     <h3 class="main"><?php print_string('adduserstogroup', 'group'); echo " $groupname"; ?></h3>
 143
 144     <form id="assignform" method="post" action="">
 145     <div>
 146     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 147     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
 148
 149     <table summary="" cellpadding="5" cellspacing="0">
 150     <tr>
 151       <td valign="top">
 152           <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
 153           <br />
 154           <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
 155                   onfocus="document.getElementById('assignform').add.disabled=true;
 156                            document.getElementById('assignform').remove.disabled=false;
 157                            document.getElementById('assignform').addselect.selectedIndex=-1;">
 158           <?php echo $groupmembersoptions ?>
 159           </select></td>
 160       <td valign="top">
 161 <?php // Hidden assignment? ?>
 162
 163         <?php check_theme_arrows(); ?>
 164         <p class="arrow_button">
 165             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
 166             <br />
 167             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
 168         </p>
 169       </td>
 170       <td valign="top">
 171           <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
 172           <br />
 173           <select name="addselect[]" size="20" id="addselect" multiple="multiple"
 174                   onfocus="document.getElementById('assignform').add.disabled=false;
 175                            document.getElementById('assignform').remove.disabled=true;
 176                            document.getElementById('assignform').removeselect.selectedIndex=-1;">
 177           <?php
 178             if ($potentialmemberscount > MAX_USERS_PER_PAGE) {
 179                 echo '<optgroup label="'.get_string('toomanytoshow').'"><option></option></optgroup>'."\n"
 180                         .'<optgroup label="'.get_string('trysearching').'"><option></option></optgroup>'."\n";
 181             } else {
 182                 echo $potentialmembersoptions;
 183             }
 184           ?>
 185          </select>
 186          <br />
 187          <label for="searchtext" class="accesshide"><?php p($strsearch) ?></label>
 188          <input type="text" name="searchtext" id="searchtext" size="30" value="<?php p($searchtext, true) ?>"
 189                   onfocus ="getElementById('assignform').add.disabled=true;
 190                             getElementById('assignform').remove.disabled=true;
 191                             getElementById('assignform').removeselect.selectedIndex=-1;
 192                             getElementById('assignform').addselect.selectedIndex=-1;"
 193                   onkeydown = "var keyCode = event.which ? event.which : event.keyCode;
 194                                if (keyCode == 13) {
 195                                     getElementById('assignform').previoussearch.value=1;
 196                                     getElementById('assignform').submit();
 197                                } " />
 198          <input name="search" id="search" type="submit" value="<?php p($strsearch) ?>" />
 199          <?php
 200               if (!empty($searchtext)) {
 201                   echo '<input name="showall" id="showall" type="submit" value="'.$strshowall.'" />'."\n";
 202               }
 203          ?>
 204        </td>
 205     </tr>
 206     <tr><td>
 207         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
 208     </td></tr>
 209     </table>
 210     </div>
 211     </form>
 212 </div>
 213
 214 <?php
 215     print_footer($course);
 216 ?>