admin/roles/assign.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  * Assign roles to users.
  19  *
  20  * @package    core_role
  21  * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 require_once(__DIR__ . '/../../config.php');
  26 require_once($CFG->dirroot . '/' . $CFG->admin . '/roles/lib.php');
  27
  28 define("MAX_USERS_TO_LIST_PER_ROLE", 10);
  29
  30 $contextid = required_param('contextid', PARAM_INT);
  31 $roleid    = optional_param('roleid', 0, PARAM_INT);
  32 $returnurl = optional_param('returnurl', null, PARAM_LOCALURL);
  33
  34 list($context, $course, $cm) = get_context_info_array($contextid);
  35
  36 $url = new moodle_url('/admin/roles/assign.php', array('contextid' => $contextid));
  37
  38 if ($course) {
  39     $isfrontpage = ($course->id == SITEID);
  40 } else {
  41     $isfrontpage = false;
  42     if ($context->contextlevel == CONTEXT_USER) {
  43         $course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);
  44         $user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);
  45         $url->param('courseid', $course->id);
  46         $url->param('userid', $user->id);
  47     } else {
  48         $course = $SITE;
  49     }
  50 }
  51
  52
  53 // Security.
  54 require_login($course, false, $cm);
  55 require_capability('moodle/role:assign', $context);
  56
  57 navigation_node::override_active_url($url);
  58 $pageurl = new moodle_url($url);
  59 if ($returnurl) {
  60     $pageurl->param('returnurl', $returnurl);
  61 }
  62 $PAGE->set_url($pageurl);
  63 $PAGE->set_context($context);
  64
  65 $contextname = $context->get_context_name();
  66 $courseid = $course->id;
  67
  68 // These are needed early because of tabs.php.
  69 list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
  70 $overridableroles = get_overridable_roles($context, ROLENAME_BOTH);
  71
  72 // Make sure this user can assign this role.
  73 if ($roleid && !isset($assignableroles[$roleid])) {
  74     $a = new stdClass;
  75     $a->roleid = $roleid;
  76     $a->context = $contextname;
  77     print_error('cannotassignrolehere', '', $context->get_url(), $a);
  78 }
  79
  80 // Work out an appropriate page title.
  81 if ($roleid) {
  82     $a = new stdClass;
  83     $a->role = $assignableroles[$roleid];
  84     $a->context = $contextname;
  85     $title = get_string('assignrolenameincontext', 'core_role', $a);
  86 } else {
  87     if ($isfrontpage) {
  88         $title = get_string('frontpageroles', 'admin');
  89     } else {
  90         $title = get_string('assignrolesin', 'core_role', $contextname);
  91     }
  92 }
  93
  94 // Process any incoming role assignments before printing the header.
  95 if ($roleid) {
  96
  97     // Create the user selector objects.
  98     $options = array('context' => $context, 'roleid' => $roleid);
  99
 100     $potentialuserselector = core_role_get_potential_user_selector($context, 'addselect', $options);
 101     $currentuserselector = new core_role_existing_role_holders('removeselect', $options);
 102
 103     // Process incoming role assignments.
 104     $errors = array();
 105     if (optional_param('add', false, PARAM_BOOL) && confirm_sesskey()) {
 106         $userstoassign = $potentialuserselector->get_selected_users();
 107         if (!empty($userstoassign)) {
 108
 109             foreach ($userstoassign as $adduser) {
 110                 $allow = true;
 111
 112                 if ($allow) {
 113                     role_assign($roleid, $adduser->id, $context->id);
 114                 }
 115             }
 116
 117             $potentialuserselector->invalidate_selected_users();
 118             $currentuserselector->invalidate_selected_users();
 119
 120             // Counts have changed, so reload.
 121             list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
 122         }
 123     }
 124
 125     // Process incoming role unassignments.
 126     if (optional_param('remove', false, PARAM_BOOL) && confirm_sesskey()) {
 127         $userstounassign = $currentuserselector->get_selected_users();
 128         if (!empty($userstounassign)) {
 129
 130             foreach ($userstounassign as $removeuser) {
 131                 // Unassign only roles that are added manually, no messing with other components!!!
 132                 role_unassign($roleid, $removeuser->id, $context->id, '');
 133             }
 134
 135             $potentialuserselector->invalidate_selected_users();
 136             $currentuserselector->invalidate_selected_users();
 137
 138             // Counts have changed, so reload.
 139             list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);
 140         }
 141     }
 142 }
 143
 144 if (!empty($user) && ($user->id != $USER->id)) {
 145     $PAGE->navigation->extend_for_user($user);
 146     $PAGE->navbar->includesettingsbase = true;
 147 }
 148
 149 $PAGE->set_pagelayout('admin');
 150 if ($context->contextlevel == CONTEXT_BLOCK) {
 151     // Do not show blocks when changing block's settings, it is confusing.
 152     $PAGE->blocks->show_only_fake_blocks(true);
 153 }
 154 $PAGE->set_title($title);
 155
 156 switch ($context->contextlevel) {
 157     case CONTEXT_SYSTEM:
 158         require_once($CFG->libdir.'/adminlib.php');
 159         admin_externalpage_setup('assignroles', '', array('contextid' => $contextid, 'roleid' => $roleid));
 160         break;
 161     case CONTEXT_USER:
 162         $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
 163         $PAGE->set_heading($fullname);
 164         $showroles = 1;
 165         break;
 166     case CONTEXT_COURSECAT:
 167         $PAGE->set_heading($SITE->fullname);
 168         break;
 169     case CONTEXT_COURSE:
 170         if ($isfrontpage) {
 171             $PAGE->set_heading(get_string('frontpage', 'admin'));
 172         } else {
 173             $PAGE->set_heading($course->fullname);
 174         }
 175         break;
 176     case CONTEXT_MODULE:
 177         $PAGE->set_heading($context->get_context_name(false));
 178         $PAGE->set_cacheable(false);
 179         break;
 180     case CONTEXT_BLOCK:
 181         $PAGE->set_heading($PAGE->course->fullname);
 182         break;
 183 }
 184
 185 echo $OUTPUT->header();
 186
 187 // Print heading.
 188 echo $OUTPUT->heading_with_help($title, 'assignroles', 'core_role');
 189
 190 if ($roleid) {
 191     // Show UI for assigning a particular role to users.
 192     // Print a warning if we are assigning system roles.
 193     if ($context->contextlevel == CONTEXT_SYSTEM) {
 194         echo $OUTPUT->notification(get_string('globalroleswarning', 'core_role'));
 195     }
 196
 197     // Print the form.
 198     $assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
 199 ?>
 200 <form id="assignform" method="post" action="<?php echo $assignurl ?>"><div>
 201   <input type="hidden" name="sesskey" value="<?php echo sesskey() ?>" />
 202
 203   <table id="assigningrole" summary="" class="admintable roleassigntable generaltable" cellspacing="0">
 204     <tr>
 205       <td id="existingcell">
 206           <p><label for="removeselect"><?php print_string('extusers', 'core_role'); ?></label></p>
 207           <?php $currentuserselector->display() ?>
 208       </td>
 209       <td id="buttonscell">
 210           <div id="addcontrols">
 211               <input name="add" id="add" type="submit" value="<?php echo $OUTPUT->larrow().'&nbsp;'.get_string('add'); ?>"
 212                      title="<?php print_string('add'); ?>" class="btn btn-secondary"/><br />
 213           </div>
 214
 215           <div id="removecontrols">
 216               <input name="remove" id="remove" type="submit" value="<?php echo get_string('remove').'&nbsp;'.$OUTPUT->rarrow(); ?>"
 217                      title="<?php print_string('remove'); ?>" class="btn btn-secondary"/>
 218           </div>
 219       </td>
 220       <td id="potentialcell">
 221           <p><label for="addselect"><?php print_string('potusers', 'core_role'); ?></label></p>
 222           <?php $potentialuserselector->display() ?>
 223       </td>
 224     </tr>
 225   </table>
 226 </div></form>
 227
 228 <?php
 229     $PAGE->requires->js_init_call('M.core_role.init_add_assign_page');
 230
 231     if (!empty($errors)) {
 232         $msg = '<p>';
 233         foreach ($errors as $e) {
 234             $msg .= $e.'<br />';
 235         }
 236         $msg .= '</p>';
 237         echo $OUTPUT->box_start();
 238         echo $OUTPUT->notification($msg);
 239         echo $OUTPUT->box_end();
 240     }
 241
 242     // Print a form to swap roles, and a link back to the all roles list.
 243     echo '<div class="backlink">';
 244
 245     $select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);
 246     $select->label = get_string('assignanotherrole', 'core_role');
 247     echo $OUTPUT->render($select);
 248     echo '<p><a href="' . $PAGE->url . '">' . get_string('backtoallroles', 'core_role') . '</a></p>';
 249     echo '</div>';
 250
 251 } else if (empty($assignableroles)) {
 252     // Print a message that there are no roles that can me assigned here.
 253     echo $OUTPUT->heading(get_string('notabletoassignroleshere', 'core_role'), 3);
 254
 255 } else {
 256     // Show UI for choosing a role to assign.
 257
 258     // Print a warning if we are assigning system roles.
 259     if ($context->contextlevel == CONTEXT_SYSTEM) {
 260         echo $OUTPUT->notification(get_string('globalroleswarning', 'core_role'));
 261     }
 262
 263     // Print instruction.
 264     echo $OUTPUT->heading(get_string('chooseroletoassign', 'core_role'), 3);
 265
 266     // Get the names of role holders for roles with between 1 and MAX_USERS_TO_LIST_PER_ROLE users,
 267     // and so determine whether to show the extra column.
 268     $roleholdernames = array();
 269     $strmorethanmax = get_string('morethan', 'core_role', MAX_USERS_TO_LIST_PER_ROLE);
 270     $showroleholders = false;
 271     foreach ($assignableroles as $roleid => $notused) {
 272         $roleusers = '';
 273         if (0 < $assigncounts[$roleid] && $assigncounts[$roleid] <= MAX_USERS_TO_LIST_PER_ROLE) {
 274             $userfields = 'u.id, u.username, ' . get_all_user_name_fields(true, 'u');
 275             $roleusers = get_role_users($roleid, $context, false, $userfields);
 276             if (!empty($roleusers)) {
 277                 $strroleusers = array();
 278                 foreach ($roleusers as $user) {
 279                     $strroleusers[] = '<a href="' . $CFG->wwwroot . '/user/view.php?id=' . $user->id . '" >' . fullname($user) . '</a>';
 280                 }
 281                 $roleholdernames[$roleid] = implode('<br />', $strroleusers);
 282                 $showroleholders = true;
 283             }
 284         } else if ($assigncounts[$roleid] > MAX_USERS_TO_LIST_PER_ROLE) {
 285             $assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
 286             $roleholdernames[$roleid] = '<a href="'.$assignurl.'">'.$strmorethanmax.'</a>';
 287         } else {
 288             $roleholdernames[$roleid] = '';
 289         }
 290     }
 291
 292     // Print overview table.
 293     $table = new html_table();
 294     $table->id = 'assignrole';
 295     $table->head = array(get_string('role'), get_string('description'), get_string('userswiththisrole', 'core_role'));
 296     $table->colclasses = array('leftalign role', 'leftalign', 'centeralign userrole');
 297     $table->attributes['class'] = 'admintable generaltable';
 298     if ($showroleholders) {
 299         $table->headspan = array(1, 1, 2);
 300         $table->colclasses[] = 'leftalign roleholder';
 301     }
 302
 303     foreach ($assignableroles as $roleid => $rolename) {
 304         $description = format_string($DB->get_field('role', 'description', array('id'=>$roleid)));
 305         $assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));
 306         $row = array('<a href="'.$assignurl.'">'.$rolename.'</a>',
 307                 $description, $assigncounts[$roleid]);
 308         if ($showroleholders) {
 309             $row[] = $roleholdernames[$roleid];
 310         }
 311         $table->data[] = $row;
 312     }
 313
 314     echo html_writer::table($table);
 315
 316     if ($context->contextlevel > CONTEXT_USER) {
 317
 318         if ($returnurl) {
 319             $url = new moodle_url($returnurl);
 320         } else {
 321             $url = $context->get_url();
 322         }
 323
 324         echo html_writer::start_tag('div', array('class'=>'backlink'));
 325         echo html_writer::tag('a', get_string('backto', '', $contextname), array('href' => $url));
 326         echo html_writer::end_tag('div');
 327     }
 328 }
 329
 330 echo $OUTPUT->footer();