c3f476da371dfb14cdac366b16b905a96961ce9d
[moodle.git] / group / members.php
1 <?php // $Id$
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');
14 define("MAX_USERS_PER_PAGE", 5000);
16 $groupid    = required_param('group', PARAM_INT);
17 $searchtext = optional_param('searchtext', '', PARAM_RAW); // search string
18 $showall    = optional_param('showall', 0, PARAM_BOOL);
20 if ($showall) {
21     $searchtext = '';
22 }
24 if (!$group = get_record('groups', 'id', $groupid)) {
25     print_error('Incorrect group id');
26 }
28 if (!$course = get_record('course', 'id', $group->courseid)) {
29     print_error('invalidcourse');
30 }
31 $courseid = $course->id;
33 require_login($course);
34 $context = get_context_instance(CONTEXT_COURSE, $courseid);
35 require_capability('moodle/course:managegroups', $context);
37 $strsearch = get_string('search');
38 $strshowall = get_string('showall');
39 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid.'&group='.$group->id;
42 if ($frm = data_submitted() and confirm_sesskey()) {
44     if (isset($frm->cancel)) {
45         redirect($returnurl);
47     } else if (isset($frm->add) and !empty($frm->addselect)) {
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', $returnurl);
55             }
56         }
58     } else if (isset($frm->remove) and !empty($frm->removeselect)) {
60         foreach ($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             }
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 }
77 $groupmembersoptions = '';
78 $groupmemberscount = 0;
80 // Get members, organised by role, and display
81 if ($groupmemberroles = groups_get_members_by_role($groupid,$courseid,'u.id,u.firstname,u.lastname')) {
82     foreach($groupmemberroles as $roleid=>$roledata) {
83         $groupmembersoptions .= '<optgroup label="'.htmlspecialchars($roledata->name).'">';
84         foreach($roledata->users as $member) {
85             $groupmembersoptions .= '<option value="'.$member->id.'">'.fullname($member, true).'</option>';
86             $groupmemberscount ++;
87         }
88         $groupmembersoptions .= '</optgroup>';
89     }
90 } else {
91     $groupmembersoptions .= '<option>&nbsp;</option>';
92 }
94 $potentialmembers = array();
95 $potentialmembersoptions = '';
96 $potentialmemberscount = 0;
98 // Get potential members, organised by role, and count them
99 $potentialmembersbyrole = groups_get_users_not_in_group_by_role($courseid, $groupid, $searchtext);
100 $potentialmemberscount=0;
101 $potentialmembersids=array();
102 if (!empty($potentialmembersbyrole)) {
103     foreach($potentialmembersbyrole as $roledata) {
104         $potentialmemberscount+=count($roledata->users);
105         $potentialmembersids=array_merge($potentialmembersids,array_keys($roledata->users));
106     }
109 if ($potentialmemberscount <=  MAX_USERS_PER_PAGE) {
111     if ($potentialmemberscount != 0) {
112         // Get other groups user already belongs to
113         $sql = "SELECT u.id AS userid, g.* FROM {$CFG->prefix}user u " .
114                     "INNER JOIN {$CFG->prefix}groups_members gm ON u.id = gm.userid " .
115                     "INNER JOIN {$CFG->prefix}groups g ON gm.groupid = g.id " .
116                "WHERE u.id IN (".implode(',',$potentialmembersids).") AND g.courseid = {$course->id} ";
117         $rs = get_recordset_sql($sql);
118         $groups = array();
119         $usergroups = array();
120         while ($usergroup =  rs_fetch_next_record($rs)) {
121             $usergroups[$usergroup->userid][$usergroup->id] = $usergroup;
122         }
123         rs_close($rs);
125         foreach($potentialmembersbyrole as $roleid=>$roledata) {
126             $potentialmembersoptions .= '<optgroup label="'.htmlspecialchars($roledata->name).'">';
127             foreach($roledata->users as $member) {
128                 $name=htmlspecialchars(fullname($member, true));
129                 $potentialmembersoptions .= '<option value="'.$member->id.
130                     '" title="'.$name.'">'.$name.
131                     ' ('.@count($usergroups[$member->id]).')</option>';
132             }
133             $potentialmembersoptions .= '</optgroup>';
134         }
135     } else {
136         $potentialmembersoptions .= '<option>&nbsp;</option>';
137     }
140 // Print the page and form
141 $strgroups = get_string('groups');
142 $strparticipants = get_string('participants');
143 $stradduserstogroup = get_string('adduserstogroup', 'group');
144 $strusergroupmembership = get_string('usergroupmembership', 'group');
146 $groupname = format_string($group->name);
148 $navlinks = array();
149 $navlinks[] = array('name' => $strparticipants, 'link' => "$CFG->wwwroot/user/index.php?id=$courseid", 'type' => 'misc');
150 $navlinks[] = array('name' => $strgroups, 'link' => "$CFG->wwwroot/group/index.php?id=$courseid", 'type' => 'misc');
151 $navlinks[] = array('name' => $stradduserstogroup, 'link' => null, 'type' => 'misc');
152 $navigation = build_navigation($navlinks);
154 print_header("$course->shortname: $strgroups", $course->fullname, $navigation, '', '', true, '', user_login_string($course, $USER));
156 // Print Javascript for showing the selected users group membership
157 ?>
158 <script type="text/javascript">
159 //<![CDATA[
160 var userSummaries = Array(
161 <?php
162 $membercnt = count($nonmembers);
163 $i=1;
164 foreach ($nonmembers as $userid => $potentalmember) {
166     if (isset($usergroups[$userid])) {
167         $usergrouplist = '<ul>';
169         foreach ($usergroups[$userid] as $groupitem) {
170             $usergrouplist .= '<li>'.addslashes(format_string($groupitem->name)).'</li>';
171         }
172         $usergrouplist .= '</ul>';
173     }
174     else {
175         $usergrouplist = '';
176     }
177     echo "'$usergrouplist'";
178     if ($i < $membercnt) {
179         echo ', ';
180     }
181     $i++;
183 ?>
184 );
186 function updateUserSummary() {
188     var selectEl = document.getElementById('addselect');
189     var summaryDiv = document.getElementById('group-usersummary');
190     var length = selectEl.length;
191     var selectCnt = 0;
192     var selectIdx = -1;
194     for(i=0;i<length;i++) {
195         if (selectEl.options[i].selected) {
196                 selectCnt++;
197             selectIdx = i;
198         }
199     }
201     if (selectCnt == 1 && userSummaries[selectIdx]) {
202         summaryDiv.innerHTML = userSummaries[selectIdx];
203     } else {
204         summaryDiv.innerHTML = '';
205     }
207     return(true);
209 //]]>
210 </script>
212 <div id="addmembersform">
213     <h3 class="main"><?php print_string('adduserstogroup', 'group'); echo ": $groupname"; ?></h3>
215     <form id="assignform" method="post" action="members.php">
216     <div>
217     <input type="hidden" name="sesskey" value="<?php p(sesskey()); ?>" />
218     <input type="hidden" name="group" value="<?php echo $groupid; ?>" />
220     <table cellpadding="6" class="generaltable generalbox groupmanagementtable boxaligncenter" summary="">
221     <tr>
222       <td valign="top">
223           <p>
224             <label for="removeselect"><?php print_string('existingmembers', 'group', $groupmemberscount); //count($contextusers) ?></label>
225           </p>
226           <select name="removeselect[]" size="20" id="removeselect" multiple="multiple"
227                   onfocus="document.getElementById('assignform').add.disabled=true;
228                            document.getElementById('assignform').remove.disabled=false;
229                            document.getElementById('assignform').addselect.selectedIndex=-1;"
230                   onclick="this.focus();updateUserSummary();">
231           <?php echo $groupmembersoptions ?>
232           </select></td>
233       <td valign="top">
234 <?php // Hidden assignment? ?>
236         <?php check_theme_arrows(); ?>
237         <p class="arrow_button">
238             <input name="add" id="add" type="submit" value="<?php echo '&nbsp;'.$THEME->larrow.' &nbsp; &nbsp; '.get_string('add'); ?>" title="<?php print_string('add'); ?>" />
239             <br />
240             <input name="remove" id="remove" type="submit" value="<?php echo '&nbsp; '.$THEME->rarrow.' &nbsp; &nbsp; '.get_string('remove'); ?>" title="<?php print_string('remove'); ?>" />
241         </p>
242       </td>
243       <td valign="top">
244           <p>
245             <label for="addselect"><?php print_string('potentialmembers', 'group', $potentialmemberscount); //$usercount ?></label>
246           </p>
247           <select name="addselect[]" size="20" id="addselect" multiple="multiple"
248                   onfocus="updateUserSummary();document.getElementById('assignform').add.disabled=false;
249                            document.getElementById('assignform').remove.disabled=true;
250                            document.getElementById('assignform').removeselect.selectedIndex=-1;"
251                   onclick="this.focus();updateUserSummary();">
252           <?php
253             if ($potentialmemberscount > MAX_USERS_PER_PAGE) {
254                 echo '<optgroup label="'.get_string('toomanytoshow').'"><option></option></optgroup>'."\n"
255                         .'<optgroup label="'.get_string('trysearching').'"><option></option></optgroup>'."\n";
256             } else {
257                 echo $potentialmembersoptions;
258             }
259           ?>
260          </select>
261          <br />
262          <label for="searchtext" class="accesshide"><?php p($strsearch) ?></label>
263          <input type="text" name="searchtext" id="searchtext" size="21" value="<?php p($searchtext, true) ?>"
264                   onfocus ="getElementById('assignform').add.disabled=true;
265                             getElementById('assignform').remove.disabled=true;
266                             getElementById('assignform').removeselect.selectedIndex=-1;
267                             getElementById('assignform').addselect.selectedIndex=-1;"
268                   onkeydown = "var keyCode = event.which ? event.which : event.keyCode;
269                                if (keyCode == 13) {
270                                     getElementById('assignform').previoussearch.value=1;
271                                     getElementById('assignform').submit();
272                                } " />
273          <input name="search" id="search" type="submit" value="<?php p($strsearch) ?>" />
274          <?php
275               if (!empty($searchtext)) {
276                   echo '<br /><input name="showall" id="showall" type="submit" value="'.$strshowall.'" />'."\n";
277               }
278          ?>
279        </td>
280        <td valign="top">
281         <p><?php echo($strusergroupmembership) ?></p>
282         <div id="group-usersummary"></div>
283        </td>
284     </tr>
285     <tr><td>
286         <input type="submit" name="cancel" value="<?php print_string('backtogroups', 'group'); ?>" />
287     </td></tr>
288     </table>
289     </div>
290     </form>
291 </div>
293 <?php
294     print_footer($course);
295 ?>