group/index.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17
  18 /**
  19  * The main group management user interface.
  20  *
  21  * @copyright 2006 The Open University, N.D.Freear AT open.ac.uk, J.White AT open.ac.uk
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package   core_group
  24  */
  25 require_once('../config.php');
  26 require_once('lib.php');
  27
  28 $courseid = required_param('id', PARAM_INT);
  29 $groupid  = optional_param('group', false, PARAM_INT);
  30 $userid   = optional_param('user', false, PARAM_INT);
  31 $action   = groups_param_action();
  32 // Support either single group= parameter, or array groups[]
  33 if ($groupid) {
  34     $groupids = array($groupid);
  35 } else {
  36     $groupids = optional_param_array('groups', array(), PARAM_INT);
  37 }
  38 $singlegroup = (count($groupids) == 1);
  39
  40 $returnurl = $CFG->wwwroot.'/group/index.php?id='.$courseid;
  41
  42 // Get the course information so we can print the header and
  43 // check the course id is valid
  44
  45 $course = $DB->get_record('course', array('id'=>$courseid), '*', MUST_EXIST);
  46
  47 $url = new moodle_url('/group/index.php', array('id'=>$courseid));
  48 navigation_node::override_active_url($url);
  49 if ($userid) {
  50     $url->param('user', $userid);
  51 }
  52 if ($groupid) {
  53     $url->param('group', $groupid);
  54 }
  55 $PAGE->set_url($url);
  56
  57 // Make sure that the user has permissions to manage groups.
  58 require_login($course);
  59
  60 $context = context_course::instance($course->id);
  61 require_capability('moodle/course:managegroups', $context);
  62
  63 $PAGE->requires->js('/group/clientlib.js');
  64
  65 // Check for multiple/no group errors
  66 if (!$singlegroup) {
  67     switch($action) {
  68         case 'ajax_getmembersingroup':
  69         case 'showgroupsettingsform':
  70         case 'showaddmembersform':
  71         case 'updatemembers':
  72             print_error('errorselectone', 'group', $returnurl);
  73     }
  74 }
  75
  76 switch ($action) {
  77     case false: //OK, display form.
  78         break;
  79
  80     case 'ajax_getmembersingroup':
  81         $roles = array();
  82         if ($groupmemberroles = groups_get_members_by_role($groupids[0], $courseid, 'u.id, ' . get_all_user_name_fields(true, 'u'))) {
  83             foreach($groupmemberroles as $roleid=>$roledata) {
  84                 $shortroledata = new stdClass();
  85                 $shortroledata->name = $roledata->name;
  86                 $shortroledata->users = array();
  87                 foreach($roledata->users as $member) {
  88                     $shortmember = new stdClass();
  89                     $shortmember->id = $member->id;
  90                     $shortmember->name = fullname($member, true);
  91                     $shortroledata->users[] = $shortmember;
  92                 }
  93                 $roles[] = $shortroledata;
  94             }
  95         }
  96         echo json_encode($roles);
  97         die;  // Client side JavaScript takes it from here.
  98
  99     case 'deletegroup':
 100         if (count($groupids) == 0) {
 101             print_error('errorselectsome','group',$returnurl);
 102         }
 103         $groupidlist = implode(',', $groupids);
 104         redirect(new moodle_url('/group/delete.php', array('courseid'=>$courseid, 'groups'=>$groupidlist)));
 105         break;
 106
 107     case 'showcreateorphangroupform':
 108         redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid)));
 109         break;
 110
 111     case 'showautocreategroupsform':
 112         redirect(new moodle_url('/group/autogroup.php', array('courseid'=>$courseid)));
 113         break;
 114
 115     case 'showimportgroups':
 116         redirect(new moodle_url('/group/import.php', array('id'=>$courseid)));
 117         break;
 118
 119     case 'showgroupsettingsform':
 120         redirect(new moodle_url('/group/group.php', array('courseid'=>$courseid, 'id'=>$groupids[0])));
 121         break;
 122
 123     case 'updategroups': //Currently reloading.
 124         break;
 125
 126     case 'removemembers':
 127         break;
 128
 129     case 'showaddmembersform':
 130         redirect(new moodle_url('/group/members.php', array('group'=>$groupids[0])));
 131         break;
 132
 133     case 'updatemembers': //Currently reloading.
 134         break;
 135
 136     default: //ERROR.
 137         print_error('unknowaction', '', $returnurl);
 138         break;
 139 }
 140
 141 // Print the page and form
 142 $strgroups = get_string('groups');
 143 $strparticipants = get_string('participants');
 144
 145 /// Print header
 146 $PAGE->set_title($strgroups);
 147 $PAGE->set_heading($course->fullname);
 148 $PAGE->set_pagelayout('standard');
 149 echo $OUTPUT->header();
 150
 151 // Add tabs
 152 $currenttab = 'groups';
 153 require('tabs.php');
 154
 155 $disabled = 'disabled="disabled"';
 156
 157 // Some buttons are enabled if single group selected.
 158 $showaddmembersform_disabled = $singlegroup ? '' : $disabled;
 159 $showeditgroupsettingsform_disabled = $singlegroup ? '' : $disabled;
 160 $deletegroup_disabled = count($groupids) > 0 ? '' : $disabled;
 161
 162 echo $OUTPUT->heading(format_string($course->shortname, true, array('context' => $context)) .' '.$strgroups, 3);
 163 echo '<form id="groupeditform" action="index.php" method="post">'."\n";
 164 echo '<div>'."\n";
 165 echo '<input type="hidden" name="id" value="' . $courseid . '" />'."\n";
 166
 167 echo html_writer::start_tag('div', array('class' => 'groupmanagementtable boxaligncenter'));
 168 echo html_writer::start_tag('div', array('class' => 'groups'));
 169
 170 echo '<p><label for="groups"><span id="groupslabel">'.get_string('groups').':</span><span id="thegrouping">&nbsp;</span></label></p>'."\n";
 171
 172 $onchange = 'M.core_group.membersCombo.refreshMembers();';
 173
 174 echo '<select name="groups[]" multiple="multiple" id="groups" size="15" class="select" onchange="'.$onchange.'">'."\n";
 175
 176 $groups = groups_get_all_groups($courseid);
 177 $selectedname = '&nbsp;';
 178 $preventgroupremoval = array();
 179
 180 if ($groups) {
 181     // Print out the HTML
 182     foreach ($groups as $group) {
 183         $select = '';
 184         $usercount = $DB->count_records('groups_members', array('groupid'=>$group->id));
 185         $groupname = format_string($group->name).' ('.$usercount.')';
 186         if (in_array($group->id,$groupids)) {
 187             $select = ' selected="selected"';
 188             if ($singlegroup) {
 189                 // Only keep selected name if there is one group selected
 190                 $selectedname = $groupname;
 191             }
 192         }
 193         if (!empty($group->idnumber) && !has_capability('moodle/course:changeidnumber', $context)) {
 194             $preventgroupremoval[$group->id] = true;
 195         }
 196
 197         echo "<option value=\"{$group->id}\"$select title=\"$groupname\">$groupname</option>\n";
 198     }
 199 } else {
 200     // Print an empty option to avoid the XHTML error of having an empty select element
 201     echo '<option>&nbsp;</option>';
 202 }
 203
 204 echo '</select>'."\n";
 205 echo '<p><input type="submit" name="act_updatemembers" id="updatemembers" value="'
 206         . get_string('showmembersforgroup', 'group') . '" /></p>'."\n";
 207 echo '<p><input type="submit" '. $showeditgroupsettingsform_disabled . ' name="act_showgroupsettingsform" id="showeditgroupsettingsform" value="'
 208         . get_string('editgroupsettings', 'group') . '" /></p>'."\n";
 209 echo '<p><input type="submit" '. $deletegroup_disabled . ' name="act_deletegroup" id="deletegroup" value="'
 210         . get_string('deleteselectedgroup', 'group') . '" /></p>'."\n";
 211
 212 echo '<p><input type="submit" name="act_showcreateorphangroupform" id="showcreateorphangroupform" value="'
 213         . get_string('creategroup', 'group') . '" /></p>'."\n";
 214
 215 echo '<p><input type="submit" name="act_showautocreategroupsform" id="showautocreategroupsform" value="'
 216         . get_string('autocreategroups', 'group') . '" /></p>'."\n";
 217
 218 echo '<p><input type="submit" name="act_showimportgroups" id="showimportgroups" value="'
 219         . get_string('importgroups', 'core_group') . '" /></p>'."\n";
 220
 221 echo html_writer::end_tag('div');
 222 echo html_writer::start_tag('div', array('class' => 'members'));
 223
 224 echo '<p><label for="members"><span id="memberslabel">'.
 225     get_string('membersofselectedgroup', 'group').
 226     ' </span><span id="thegroup">'.$selectedname.'</span></label></p>'."\n";
 227 //NOTE: the SELECT was, multiple="multiple" name="user[]" - not used and breaks onclick.
 228 echo '<select name="user" id="members" size="15" class="select"'."\n";
 229 echo ' onclick="window.status=this.options[this.selectedIndex].title;" onmouseout="window.status=\'\';">'."\n";
 230
 231 $member_names = array();
 232
 233 $atleastonemember = false;
 234 if ($singlegroup) {
 235     if ($groupmemberroles = groups_get_members_by_role($groupids[0], $courseid, 'u.id, ' . get_all_user_name_fields(true, 'u'))) {
 236         foreach($groupmemberroles as $roleid=>$roledata) {
 237             echo '<optgroup label="'.s($roledata->name).'">';
 238             foreach($roledata->users as $member) {
 239                 echo '<option value="'.$member->id.'">'.fullname($member, true).'</option>';
 240                 $atleastonemember = true;
 241             }
 242             echo '</optgroup>';
 243         }
 244     }
 245 }
 246
 247 if (!$atleastonemember) {
 248     // Print an empty option to avoid the XHTML error of having an empty select element
 249     echo '<option>&nbsp;</option>';
 250 }
 251
 252 echo '</select>'."\n";
 253
 254 echo '<p><input type="submit" ' . $showaddmembersform_disabled . ' name="act_showaddmembersform" '
 255         . 'id="showaddmembersform" value="' . get_string('adduserstogroup', 'group'). '" /></p>'."\n";
 256 echo html_writer::end_tag('div');
 257 echo html_writer::end_tag('div');
 258
 259 //<input type="hidden" name="rand" value="om" />
 260 echo '</div>'."\n";
 261 echo '</form>'."\n";
 262
 263 $PAGE->requires->js_init_call('M.core_group.init_index', array($CFG->wwwroot, $courseid));
 264 $PAGE->requires->js_init_call('M.core_group.groupslist', array($preventgroupremoval));
 265
 266 echo $OUTPUT->footer();
 267
 268 /**
 269  * Returns the first button action with the given prefix, taken from
 270  * POST or GET, otherwise returns false.
 271  * @see /lib/moodlelib.php function optional_param().
 272  * @param string $prefix 'act_' as in 'action'.
 273  * @return string The action without the prefix, or false if no action found.
 274  */
 275 function groups_param_action($prefix = 'act_') {
 276     $action = false;
 277 //($_SERVER['QUERY_STRING'] && preg_match("/$prefix(.+?)=(.+)/", $_SERVER['QUERY_STRING'], $matches)) { //b_(.*?)[&;]{0,1}/
 278
 279     if ($_POST) {
 280         $form_vars = $_POST;
 281     }
 282     elseif ($_GET) {
 283         $form_vars = $_GET;
 284     }
 285     if ($form_vars) {
 286         foreach ($form_vars as $key => $value) {
 287             if (preg_match("/$prefix(.+)/", $key, $matches)) {
 288                 $action = $matches[1];
 289                 break;
 290             }
 291         }
 292     }
 293     if ($action && !preg_match('/^\w+$/', $action)) {
 294         $action = false;
 295         print_error('unknowaction');
 296     }
 297     ///if (debugging()) echo 'Debug: '.$action;
 298     return $action;
 299 }