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Differences Between: [Versions 310 and 403] [Versions 311 and 403] [Versions 39 and 403] [Versions 400 and 403] [Versions 401 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   * Settings form for overrides in the assign module.
  19   *
  20   * @package    mod_assign
  21   * @copyright  2016 Ilya Tregubov
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->libdir . '/formslib.php');
  29  require_once($CFG->dirroot . '/mod/assign/mod_form.php');
  30  
  31  
  32  /**
  33   * Form for editing settings overrides.
  34   *
  35   * @copyright  2016 Ilya Tregubov
  36   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37   */
  38  class assign_override_form extends moodleform {
  39  
  40      /** @var object course module object. */
  41      protected $cm;
  42  
  43      /** @var object the assign settings object. */
  44      protected $assign;
  45  
  46      /** @var context the assign context. */
  47      protected $context;
  48  
  49      /** @var bool editing group override (true) or user override (false). */
  50      protected $groupmode;
  51  
  52      /** @var int groupid, if provided. */
  53      protected $groupid;
  54  
  55      /** @var int userid, if provided. */
  56      protected $userid;
  57  
  58      /** @var int sortorder, if provided. */
  59      protected $sortorder;
  60  
  61      /** @var int selecteduserid, if provided. */
  62      protected $selecteduserid;
  63  
  64      /**
  65       * Constructor.
  66       * @param moodle_url $submiturl the form action URL.
  67       * @param object $cm course module object.
  68       * @param object $assign the assign settings object.
  69       * @param object $context the assign context.
  70       * @param bool $groupmode editing group override (true) or user override (false).
  71       * @param object $override the override being edited, if it already exists.
  72       * @param int $selecteduserid the user selected in the form, if any.
  73       */
  74      public function __construct($submiturl, $cm, $assign, $context, $groupmode, $override, $selecteduserid = null) {
  75  
  76          $this->cm = $cm;
  77          $this->assign = $assign;
  78          $this->context = $context;
  79          $this->groupmode = $groupmode;
  80          $this->groupid = empty($override->groupid) ? 0 : $override->groupid;
  81          $this->userid = empty($override->userid) ? 0 : $override->userid;
  82          $this->sortorder = empty($override->sortorder) ? null : $override->sortorder;
  83          $this->selecteduserid = $selecteduserid;
  84  
  85          parent::__construct($submiturl, null, 'post');
  86  
  87      }
  88  
  89      /**
  90       * Define this form - called by the parent constructor
  91       */
  92      protected function definition() {
  93          global $DB, $OUTPUT, $PAGE;
  94  
  95          $cm = $this->cm;
  96          $mform = $this->_form;
  97          $userid = $this->selecteduserid ?? $this->userid ?: null;
  98          $assigninstance = $this->assign->get_instance($userid);
  99          $inrelativedatesmode = !empty($this->assign->get_course()->relativedatesmode);
 100  
 101          $assigngroupmode = groups_get_activity_groupmode($cm);
 102          $accessallgroups = ($assigngroupmode == NOGROUPS) || has_capability('moodle/site:accessallgroups', $this->context);
 103  
 104          if ($this->groupmode) {
 105              $mform->addElement('header', 'override', get_string('groupoverrides', 'assign'));
 106              // Group override.
 107              if ($this->groupid) {
 108                  // There is already a groupid, so freeze the selector.
 109                  $groupchoices = [
 110                      $this->groupid => format_string(groups_get_group_name($this->groupid), true, ['context' => $this->context]),
 111                  ];
 112                  $mform->addElement('select', 'groupid',
 113                          get_string('overridegroup', 'assign'), $groupchoices);
 114                  $mform->freeze('groupid');
 115                  // Add a sortorder element.
 116                  $mform->addElement('hidden', 'sortorder', $this->sortorder);
 117                  $mform->setType('sortorder', PARAM_INT);
 118                  $mform->freeze('sortorder');
 119              } else {
 120                  // Prepare the list of groups.
 121                  // Only include the groups the current can access.
 122                  $groups = $accessallgroups ? groups_get_all_groups($cm->course) : groups_get_activity_allowed_groups($cm);
 123                  if (empty($groups)) {
 124                      // Generate an error.
 125                      $link = new moodle_url('/mod/assign/overrides.php', array('cmid' => $cm->id));
 126                      throw new \moodle_exception('groupsnone', 'assign', $link);
 127                  }
 128  
 129                  $groupchoices = array();
 130                  foreach ($groups as $group) {
 131                      if ($group->visibility != GROUPS_VISIBILITY_NONE) {
 132                          $groupchoices[$group->id] = format_string($group->name, true, ['context' => $this->context]);
 133                      }
 134                  }
 135                  unset($groups);
 136  
 137                  if (count($groupchoices) == 0) {
 138                      $groupchoices[0] = get_string('none');
 139                  }
 140  
 141                  $mform->addElement('select', 'groupid',
 142                          get_string('overridegroup', 'assign'), $groupchoices);
 143                  $mform->addRule('groupid', get_string('required'), 'required', null, 'client');
 144              }
 145          } else {
 146              $mform->addElement('header', 'override', get_string('useroverrides', 'assign'));
 147              // User override.
 148              if ($this->userid) {
 149                  // There is already a userid, so freeze the selector.
 150                  $user = $DB->get_record('user', array('id' => $this->userid));
 151                  $userchoices = array();
 152                  $userchoices[$this->userid] = fullname($user);
 153                  $mform->addElement('select', 'userid',
 154                          get_string('overrideuser', 'assign'), $userchoices);
 155                  $mform->freeze('userid');
 156              } else {
 157                  // Prepare the list of users.
 158                  $users = [];
 159                  list($sort) = users_order_by_sql('u');
 160  
 161                  // Get the list of appropriate users, depending on whether and how groups are used.
 162                  $userfieldsapi = \core_user\fields::for_name();
 163                  $userfields = 'u.id, u.email, ' . $userfieldsapi->get_sql('u', false, '', '', false)->selects;
 164                  $groupids = 0;
 165                  if (!$accessallgroups) {
 166                      $groups = groups_get_activity_allowed_groups($cm);
 167                      $groupids = array_keys($groups);
 168                  }
 169                  $users = get_enrolled_users($this->context, '',
 170                          $groupids, $userfields, $sort);
 171  
 172                  // Filter users based on any fixed restrictions (groups, profile).
 173                  $info = new \core_availability\info_module($cm);
 174                  $users = $info->filter_user_list($users);
 175  
 176                  if (empty($users)) {
 177                      // Generate an error.
 178                      $link = new moodle_url('/mod/assign/overrides.php', array('cmid' => $cm->id));
 179                      throw new \moodle_exception('usersnone', 'assign', $link);
 180                  }
 181  
 182                  $userchoices = array();
 183                  // TODO Does not support custom user profile fields (MDL-70456).
 184                  $canviewemail = in_array('email', \core_user\fields::get_identity_fields($this->context, false));
 185                  foreach ($users as $id => $user) {
 186                      if (empty($invalidusers[$id]) || (!empty($override) &&
 187                              $id == $override->userid)) {
 188                          if ($canviewemail) {
 189                              $userchoices[$id] = fullname($user) . ', ' . $user->email;
 190                          } else {
 191                              $userchoices[$id] = fullname($user);
 192                          }
 193                      }
 194                  }
 195                  unset($users);
 196  
 197                  if (count($userchoices) == 0) {
 198                      $userchoices[0] = get_string('none');
 199                  }
 200                  $mform->addElement('searchableselector', 'userid',
 201                          get_string('overrideuser', 'assign'), $userchoices);
 202                  $mform->addRule('userid', get_string('required'), 'required', null, 'client');
 203  
 204                  if ($inrelativedatesmode) {
 205                      // If in relative dates mode then add the JS to reload the page when the user
 206                      // selection is changed to ensure that the correct dates are displayed.
 207                      $PAGE->requires->js_call_amd('mod_assign/override_form', 'init', [
 208                          $mform->getAttribute('id'),
 209                          'userid'
 210                      ]);
 211                  }
 212              }
 213  
 214              if ($inrelativedatesmode) {
 215                  if ($userid) {
 216                      $templatecontext = [
 217                          'allowsubmissionsfromdate' => $assigninstance->allowsubmissionsfromdate,
 218                          'duedate' => $assigninstance->duedate,
 219                          'cutoffdate' => $assigninstance->cutoffdate
 220                      ];
 221                      $html = $OUTPUT->render_from_template('mod_assign/override_form_user_defaults', $templatecontext);
 222                  } else {
 223                      $html = get_string('noselection', 'form');
 224                  }
 225  
 226                  $groupelements = [];
 227                  $groupelements[] = $mform->createElement('html', $html);
 228                  $mform->addGroup($groupelements, null, get_string('userassignmentdefaults', 'mod_assign'), null, false);
 229              }
 230          }
 231  
 232          $users = $DB->get_fieldset_select('groups_members', 'userid', 'groupid = ?', array($this->groupid));
 233          array_push($users, $this->userid);
 234          $extensionmax = 0;
 235          foreach ($users as $value) {
 236              $extension = $DB->get_record('assign_user_flags', array('assignment' => $assigninstance->id,
 237                  'userid' => $value));
 238              if ($extension) {
 239                  if ($extensionmax < $extension->extensionduedate) {
 240                      $extensionmax = $extension->extensionduedate;
 241                  }
 242              }
 243          }
 244  
 245          if ($extensionmax) {
 246              $assigninstance->extensionduedate = $extensionmax;
 247          }
 248  
 249          // Open and close dates.
 250          $mform->addElement('date_time_selector', 'allowsubmissionsfromdate',
 251              get_string('allowsubmissionsfromdate', 'assign'), array('optional' => true));
 252          $mform->setDefault('allowsubmissionsfromdate', $assigninstance->allowsubmissionsfromdate);
 253  
 254          $mform->addElement('date_time_selector', 'duedate', get_string('duedate', 'assign'), array('optional' => true));
 255          $mform->setDefault('duedate', $assigninstance->duedate);
 256  
 257          $mform->addElement('date_time_selector', 'cutoffdate', get_string('cutoffdate', 'assign'), array('optional' => true));
 258          $mform->setDefault('cutoffdate', $assigninstance->cutoffdate);
 259  
 260          if (isset($assigninstance->extensionduedate)) {
 261              $mform->addElement('static', 'extensionduedate', get_string('extensionduedate', 'assign'),
 262                  userdate($assigninstance->extensionduedate));
 263          }
 264  
 265          // Time limit.
 266          $mform->addElement('duration', 'timelimit',
 267              get_string('timelimit', 'assign'), array('optional' => true));
 268          $mform->setDefault('timelimit', $assigninstance->timelimit);
 269  
 270          // Submit buttons.
 271          $mform->addElement('submit', 'resetbutton',
 272                  get_string('reverttodefaults', 'assign'));
 273  
 274          $buttonarray = array();
 275          $buttonarray[] = $mform->createElement('submit', 'submitbutton',
 276                  get_string('save', 'assign'));
 277          $buttonarray[] = $mform->createElement('submit', 'againbutton',
 278                  get_string('saveoverrideandstay', 'assign'));
 279          $buttonarray[] = $mform->createElement('cancel');
 280  
 281          $mform->addGroup($buttonarray, 'buttonbar', '', array(' '), false);
 282          $mform->closeHeaderBefore('buttonbar');
 283  
 284      }
 285  
 286      /**
 287       * Validate the submitted form data.
 288       *
 289       * @param array $data array of ("fieldname"=>value) of submitted data
 290       * @param array $files array of uploaded files "element_name"=>tmp_file_path
 291       * @return array of "element_name"=>"error_description" if there are errors
 292       */
 293      public function validation($data, $files) {
 294          $errors = parent::validation($data, $files);
 295  
 296          $mform =& $this->_form;
 297          $userid = $this->selecteduserid ?? $this->userid ?: null;
 298          $assigninstance = $this->assign->get_instance($userid);
 299  
 300          if ($mform->elementExists('userid')) {
 301              if (empty($data['userid'])) {
 302                  $errors['userid'] = get_string('required');
 303              }
 304          }
 305  
 306          if ($mform->elementExists('groupid')) {
 307              if (empty($data['groupid'])) {
 308                  $errors['groupid'] = get_string('required');
 309              }
 310          }
 311  
 312          // Ensure that the dates make sense.
 313          if (!empty($data['allowsubmissionsfromdate']) && !empty($data['cutoffdate'])) {
 314              if ($data['cutoffdate'] < $data['allowsubmissionsfromdate']) {
 315                  $errors['cutoffdate'] = get_string('cutoffdatefromdatevalidation', 'assign');
 316              }
 317          }
 318  
 319          if (!empty($data['allowsubmissionsfromdate']) && !empty($data['duedate'])) {
 320              if ($data['duedate'] <= $data['allowsubmissionsfromdate']) {
 321                  $errors['duedate'] = get_string('duedateaftersubmissionvalidation', 'assign');
 322              }
 323          }
 324  
 325          if (!empty($data['cutoffdate']) && !empty($data['duedate'])) {
 326              if ($data['cutoffdate'] < $data['duedate'] ) {
 327                  $errors['cutoffdate'] = get_string('cutoffdatevalidation', 'assign');
 328              }
 329          }
 330  
 331          // Ensure that override duedate/allowsubmissionsfromdate are before extension date if exist.
 332          if (!empty($assigninstance->extensionduedate) && !empty($data['duedate'])) {
 333              if ($assigninstance->extensionduedate < $data['duedate']) {
 334                  $errors['duedate'] = get_string('extensionnotafterduedate', 'assign');
 335              }
 336          }
 337          if (!empty($assigninstance->extensionduedate) && !empty($data['allowsubmissionsfromdate'])) {
 338              if ($assigninstance->extensionduedate < $data['allowsubmissionsfromdate']) {
 339                  $errors['allowsubmissionsfromdate'] = get_string('extensionnotafterfromdate', 'assign');
 340              }
 341          }
 342  
 343          // Ensure that at least one assign setting was changed.
 344          $changed = false;
 345          $keys = array('duedate', 'cutoffdate', 'allowsubmissionsfromdate', 'timelimit');
 346          foreach ($keys as $key) {
 347              if ($data[$key] != $assigninstance->{$key}) {
 348                  $changed = true;
 349                  break;
 350              }
 351          }
 352  
 353          if (!$changed) {
 354              $errors['allowsubmissionsfromdate'] = get_string('nooverridedata', 'assign');
 355          }
 356  
 357          return $errors;
 358      }
 359  }