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Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]

   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   * Lets you override role definitions in contexts.
  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('../../config.php');
  26  
  27  $contextid = required_param('contextid', PARAM_INT);
  28  $roleid    = required_param('roleid', PARAM_INT);
  29  
  30  list($context, $course, $cm) = get_context_info_array($contextid);
  31  
  32  $url = new moodle_url('/admin/roles/override.php', array('contextid' => $contextid, 'roleid' => $roleid));
  33  
  34  if ($course) {
  35      $isfrontpage = ($course->id == SITEID);
  36  } else {
  37      $isfrontpage = false;
  38      if ($context->contextlevel == CONTEXT_USER) {
  39          $course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);
  40          $user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);
  41          $url->param('courseid', $course->id);
  42          $url->param('userid', $user->id);
  43      } else {
  44          $course = $SITE;
  45      }
  46  }
  47  
  48  // Security first.
  49  require_login($course, false, $cm);
  50  $safeoverridesonly = false;
  51  if (!has_capability('moodle/role:override', $context)) {
  52      require_capability('moodle/role:safeoverride', $context);
  53      $safeoverridesonly = true;
  54  }
  55  $PAGE->set_url($url);
  56  $PAGE->set_pagelayout('admin');
  57  
  58  if ($context->contextlevel == CONTEXT_USER and $USER->id != $context->instanceid) {
  59      $PAGE->navigation->extend_for_user($user);
  60      $PAGE->set_context(context_course::instance($course->id));
  61      navigation_node::override_active_url(new moodle_url('/admin/roles/permissions.php',
  62          array('contextid'=>$context->id, 'userid'=>$context->instanceid, 'courseid'=>$course->id)));
  63  
  64  } else {
  65      $PAGE->set_context($context);
  66      navigation_node::override_active_url(new moodle_url('/admin/roles/permissions.php', array('contextid'=>$context->id)));
  67  }
  68  
  69  $courseid = $course->id;
  70  
  71  $returnurl = new moodle_url('/admin/roles/permissions.php', array('contextid' => $context->id));
  72  
  73  // Handle the cancel button.
  74  if (optional_param('cancel', false, PARAM_BOOL)) {
  75      redirect($returnurl);
  76  }
  77  
  78  $role = $DB->get_record('role', array('id'=>$roleid), '*', MUST_EXIST);
  79  
  80  // These are needed early.
  81  $assignableroles  = get_assignable_roles($context, ROLENAME_BOTH);
  82  list($overridableroles, $overridecounts, $nameswithcounts) = get_overridable_roles($context, ROLENAME_BOTH, true);
  83  
  84  // Work out an appropriate page title.
  85  $contextname = $context->get_context_name();
  86  $straction = get_string('overrideroles', 'core_role'); // Used by tabs.php.
  87  $a = (object)array('context' => $contextname, 'role' => $overridableroles[$roleid]);
  88  $title = get_string('overridepermissionsforrole', 'core_role', $a);
  89  
  90  $currenttab = 'permissions';
  91  
  92  $PAGE->set_title($title);
  93  $PAGE->navbar->add($straction);
  94  switch ($context->contextlevel) {
  95      case CONTEXT_SYSTEM:
  96          print_error('cannotoverridebaserole', 'error');
  97          break;
  98      case CONTEXT_USER:
  99          $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));
 100          $PAGE->set_heading($fullname);
 101          $showroles = 1;
 102          break;
 103      case CONTEXT_COURSECAT:
 104          $PAGE->set_heading($SITE->fullname);
 105          break;
 106      case CONTEXT_COURSE:
 107          if ($isfrontpage) {
 108              $PAGE->set_heading(get_string('frontpage', 'admin'));
 109          } else {
 110              $PAGE->set_heading($course->fullname);
 111          }
 112          break;
 113      case CONTEXT_MODULE:
 114          $PAGE->set_heading($context->get_context_name(false));
 115          $PAGE->set_cacheable(false);
 116          break;
 117      case CONTEXT_BLOCK:
 118          $PAGE->set_heading($PAGE->course->fullname);
 119          break;
 120  }
 121  
 122  // Make sure this user can override that role.
 123  if (empty($overridableroles[$roleid])) {
 124      $a = new stdClass;
 125      $a->roleid = $roleid;
 126      $a->context = $contextname;
 127      print_error('cannotoverriderolehere', '', $context->get_url(), $a);
 128  }
 129  
 130  // If we are actually overriding a role, create the table object, and save changes if appropriate.
 131  $overridestable = new core_role_override_permissions_table_advanced($context, $roleid, $safeoverridesonly);
 132  $overridestable->read_submitted_permissions();
 133  
 134  if (optional_param('savechanges', false, PARAM_BOOL) && confirm_sesskey()) {
 135      $overridestable->save_changes();
 136      $rolename = $overridableroles[$roleid];
 137  
 138      redirect($returnurl);
 139  }
 140  
 141  // Finally start page output.
 142  echo $OUTPUT->header();
 143  echo $OUTPUT->heading_with_help($title, 'overridepermissions', 'core_role');
 144  
 145  // Show UI for overriding roles.
 146  if (!empty($capabilities)) {
 147      echo $OUTPUT->box(get_string('nocapabilitiesincontext', 'core_role'), 'generalbox boxaligncenter');
 148  
 149  } else {
 150      // Print the capabilities overrideable in this context.
 151      echo $OUTPUT->box_start('generalbox capbox');
 152      echo html_writer::start_tag('form', array('id'=>'overrideform', 'action'=>$PAGE->url->out(), 'method'=>'post'));
 153      echo html_writer::start_tag('div');
 154      echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
 155      echo html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'roleid', 'value'=>$roleid));
 156      echo html_writer::tag('p', get_string('highlightedcellsshowinherit', 'core_role'), array('class'=>'overridenotice'));
 157  
 158      $overridestable->display();
 159      if ($overridestable->has_locked_capabilities()) {
 160          echo '<p class="overridenotice">' . get_string('safeoverridenotice', 'core_role') . "</p>\n";
 161      }
 162  
 163      echo html_writer::start_tag('div', array('class'=>'submit_buttons'));
 164      $attrs = array('type'=>'submit', 'name'=>'savechanges', 'value'=>get_string('savechanges'), 'class'=>'btn btn-primary');
 165      echo html_writer::empty_tag('input', $attrs);
 166      $attrs = array('type'=>'submit', 'name'=>'cancel', 'value'=>get_string('cancel'), 'class' => 'btn btn-secondary');
 167      echo html_writer::empty_tag('input', $attrs);
 168      echo html_writer::end_tag('div');
 169      echo html_writer::end_tag('div');
 170      echo html_writer::end_tag('form');
 171      echo $OUTPUT->box_end();
 172  }
 173  
 174  // Print a form to swap roles, and a link back to the all roles list.
 175  echo html_writer::start_tag('div', array('class'=>'backlink'));
 176  $select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);
 177  $select->label = get_string('overrideanotherrole', 'core_role');
 178  echo $OUTPUT->render($select);
 179  echo html_writer::tag('p', html_writer::tag('a', get_string('backtoallroles', 'core_role'), array('href'=>$returnurl)));
 180  echo html_writer::end_tag('div');
 181  
 182  echo $OUTPUT->footer();