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         }
  72     }
  73
  74     $groupmembers = groups_get_members($groupid);
  75     $groupmembersoptions = '';
  76     $groupmemberscount = 0;
  77     if ($groupmembers != false) {
  78         // Put the groupings into a hash and sorts them
  79         foreach ($groupmembers as $userid) {
  80             $listmembers[$userid] = groups_get_user_displayname($userid, $courseid);
  81             $groupmemberscount ++;
  82         }
  83         natcasesort($listmembers);
  84
  85         // Print out the HTML
  86         foreach($listmembers as $id => $name) {
  87             $groupmembersoptions .= "<option value=\"$id\">$name</option>\n";
  88         }
  89     } else {
  90         $groupmembersoptions .= '<option>&nbsp;</option>';
  91     }
  92
  93     //TODO: If no 'showall' button, then set true.
  94     $showall = true;
  95
  96     $potentialmembers = array();
  97     $potentialmembersoptions = '';
  98     $potentialmemberscount = 0;
  99     if (!$showall && $groupingid != GROUP_NOT_IN_GROUPING) {
 100         $potentialmembers = groups_get_users_not_in_any_group_in_grouping($courseid, $groupingid, $groupid);
 101     } else {
 102         $potentialmembers = groups_get_users_not_in_group($courseid, $groupid);
 103     }
 104
 105     if ($potentialmembers != false) {
 106         // Put the groupings into a hash and sorts them
 107         foreach ($potentialmembers as $userid) {
 108             $nonmembers[$userid] = groups_get_user_displayname($userid, $courseid);
 109             $potentialmemberscount++;
 110         }
 111         natcasesort($nonmembers);
 112
 113         // Print out the HTML
 114         foreach($nonmembers as $id => $name) {
 115             $potentialmembersoptions .= "<option value=\"$id\">$name</option>\n";
 116         }
 117     } else {
 118         $potentialmembersoptions .= '<option>&nbsp;</option>';
 119     }
 120
 121     // Print the page and form
 122     $strgroups = get_string('groups');
 123     $strparticipants = get_string('participants');
 124
 125     $groupname = groups_get_group_displayname($groupid);
 126
 127     print_header("$course->shortname: $strgroups",
 128                  $course->fullname,
 129                  "<a href=\"$CFG->wwwroot/course/view.php?id=$courseid\">$course->shortname</a> ".
 130                  "-> <a href=\"$CFG->wwwroot/user/index.php?id=$courseid\">$strparticipants</a> ".
 131                  '-> <a href="' .format_string(groups_home_url($courseid, $groupid, $groupingid, false)) . "\">$strgroups</a>".
 132                  '-> '. get_string('adduserstogroup', 'group'), '', '', true, '', user_login_string($course, $USER));
 133
 134 ?>
 135 <div id="addmembersform">
 136     <h3 class="main"><?php print_string('adduserstogroup', 'group'); echo " $groupname"; ?></h3>
 137
 138     <form id="assignform" method="post" action="">
 139     <div>
 140     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
 141     <input type="hidden" name="courseid" value="<?php p($courseid); ?>" />
 142     <input type="hidden" name="grouping" value="<?php echo $groupingid; ?>" />
 143     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
 144
 145     <table summary="" cellpadding="5" cellspacing="0">
 146     <tr>
 147       <td valign="top">
 148           <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
 149           <br />
 150           <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
 151                   onfocus="document.getElementById('assignform').add.disabled=true;
 152                            document.getElementById('assignform').remove.disabled=false;
 153                            document.getElementById('assignform').addselect.selectedIndex=-1;">
 154           <?php echo $groupmembersoptions ?>
 155           </select></td>
 156       <td valign="top">
 157 <?php // Hidden assignment? ?>
 158
 159         <?php check_theme_arrows(); ?>
 160         <p class="arrow_button">
 161             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
 162             <br />
 163             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
 164         </p>
 165       </td>
 166       <td valign="top">
 167           <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
 168           <br />
 169           <select name="addselect[]" size="20" id="addselect" multiple="multiple"
 170                   onfocus="document.getElementById('assignform').add.disabled=false;
 171                            document.getElementById('assignform').remove.disabled=true;
 172                            document.getElementById('assignform').removeselect.selectedIndex=-1;">
 173          <?php echo $potentialmembersoptions ?>
 174          </select>
 175          <br />
 176          <?php //TODO: Search box?
 177
 178               /*if (!empty($searchtext)) {
 179                   echo '<input name="showall" type="submit" value="'.get_string('showall').'" />'."\n";
 180               }*/
 181          ?>
 182        </td>
 183     </tr>
 184     <tr><td>
 185         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
 186     </td></tr>
 187     </table>
 188     </div>
 189     </form>
 190 </div>
 191
 192 <?php
 193     print_footer($course);
 194 }
 195
 196 ?>