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 require_once($CFG->libdir.'/moodlelib.php');
  14
  15 $success = true;
  16
  17 $courseid   = required_param('courseid', PARAM_INT);
  18 $groupingid = required_param('grouping', PARAM_INT);
  19 $groupid    = required_param('group', PARAM_INT);
  20
  21 // Get the course information so we can print the header and
  22 // check the course id is valid
  23 $course = groups_get_course_info($courseid);
  24 if (! $course) {
  25     $success = false;
  26     print_error('invalidcourse');
  27 }
  28 if (empty($groupid)) {
  29     $success = false;
  30     print_error('errorinvalidgroup', 'group', groups_home_url($courseid));
  31 }
  32
  33 if ($success) {
  34     // Make sure that the user has permissions to manage groups.
  35     require_login($courseid);
  36
  37     $context = get_context_instance(CONTEXT_COURSE, $courseid);
  38     if (! has_capability('moodle/course:managegroups', $context)) {
  39         redirect();
  40     }
  41
  42     if ($frm = data_submitted() and confirm_sesskey()) {
  43
  44         if (isset($frm->cancel)) {
  45             redirect('index.php?id='. $courseid
  46                 .'&grouping='. $groupingid .'&group='. $groupid);
  47         }
  48         elseif (isset($frm->add) and !empty($frm->addselect)) {
  49
  50             foreach ($frm->addselect as $userid) {
  51                 if (! $userid = clean_param($userid, PARAM_INT)) {
  52                     continue;
  53                 }
  54                 $success = groups_add_member($groupid, $userid);
  55                 if (! $success) {
  56                     print_error('erroraddremoveuser', 'group', groups_home_url($courseid));
  57                 }
  58             }
  59         }
  60         elseif (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                 $success = groups_remove_member($groupid, $userid);
  67                 if (! $success) {
  68                     print_error('erroraddremoveuser', 'group', groups_home_url($courseid));
  69                 }
  70
  71                 // MDL-9983
  72                 $eventdata = new object();
  73                 $eventdata -> groupid = $groupid;
  74                 $eventdata -> userid = $userid;
  75                 events_trigger('group_user_removed', $eventdata);
  76             }
  77         }
  78     }
  79
  80     $groupmembers = groups_get_members($groupid);
  81     $groupmembersoptions = '';
  82     $groupmemberscount = 0;
  83     if ($groupmembers != false) {
  84         // Put the groupings into a hash and sorts them
  85         foreach ($groupmembers as $userid) {
  86             $listmembers[$userid] = groups_get_user_displayname($userid, $courseid);
  87             $groupmemberscount ++;
  88         }
  89         natcasesort($listmembers);
  90
  91         // Print out the HTML
  92         foreach($listmembers as $id => $name) {
  93             $groupmembersoptions .= "<option value=\"$id\">$name</option>\n";
  94         }
  95     } else {
  96         $groupmembersoptions .= '<option>&nbsp;</option>';
  97     }
  98
  99     //TODO: If no 'showall' button, then set true.
 100     $showall = true;
 101
 102     $potentialmembers = array();
 103     $potentialmembersoptions = '';
 104     $potentialmemberscount = 0;
 105     if (!$showall && $groupingid != GROUP_NOT_IN_GROUPING) {
 106         $potentialmembers = groups_get_users_not_in_any_group_in_grouping($courseid, $groupingid, $groupid);
 107     } else {
 108         $potentialmembers = groups_get_users_not_in_group($courseid, $groupid);
 109     }
 110
 111     if ($potentialmembers != false) {
 112         // Put the groupings into a hash and sorts them
 113         foreach ($potentialmembers as $userid) {
 114             $nonmembers[$userid] = groups_get_user_displayname($userid, $courseid);
 115             $potentialmemberscount++;
 116         }
 117         natcasesort($nonmembers);
 118
 119         // Print out the HTML
 120         foreach($nonmembers as $id => $name) {
 121             $potentialmembersoptions .= "<option value=\"$id\">$name</option>\n";
 122         }
 123     } else {
 124         $potentialmembersoptions .= '<option>&nbsp;</option>';
 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\">$strparticipants</a> ".
 137                  '-> <a href="' .format_string(groups_home_url($courseid, $groupid, $groupingid, false)) . "\">$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 " $groupname"; ?></h3>
 143
 144     <form id="assignform" method="post" action="">
 145     <div>
 146     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 147     <input type="hidden" name="courseid" value="<?php p($courseid); ?>" />
 148     <input type="hidden" name="grouping" value="<?php echo $groupingid; ?>" />
 149     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
 150
 151     <table summary="" cellpadding="5" cellspacing="0">
 152     <tr>
 153       <td valign="top">
 154           <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
 155           <br />
 156           <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
 157                   onfocus="document.getElementById('assignform').add.disabled=true;
 158                            document.getElementById('assignform').remove.disabled=false;
 159                            document.getElementById('assignform').addselect.selectedIndex=-1;">
 160           <?php echo $groupmembersoptions ?>
 161           </select></td>
 162       <td valign="top">
 163 <?php // Hidden assignment? ?>
 164
 165         <?php check_theme_arrows(); ?>
 166         <p class="arrow_button">
 167             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
 168             <br />
 169             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
 170         </p>
 171       </td>
 172       <td valign="top">
 173           <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
 174           <br />
 175           <select name="addselect[]" size="20" id="addselect" multiple="multiple"
 176                   onfocus="document.getElementById('assignform').add.disabled=false;
 177                            document.getElementById('assignform').remove.disabled=true;
 178                            document.getElementById('assignform').removeselect.selectedIndex=-1;">
 179          <?php echo $potentialmembersoptions ?>
 180          </select>
 181          <br />
 182          <?php //TODO: Search box?
 183
 184               /*if (!empty($searchtext)) {
 185                   echo '<input name="showall" type="submit" value="'.get_string('showall').'" />'."\n";
 186               }*/
 187          ?>
 188        </td>
 189     </tr>
 190     <tr><td>
 191         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
 192     </td></tr>
 193     </table>
 194     </div>
 195     </form>
 196 </div>
 197
 198 <?php
 199     print_footer($course);
 200 }
 201
 202 ?>