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Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 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  /**
  19   * Auto group form
  20   *
  21   * @package    core_group
  22   * @copyright  2007 mattc-catalyst (http://moodle.com)
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  if (!defined('MOODLE_INTERNAL')) {
  26      die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
  27  }
  28  
  29  require_once($CFG->dirroot.'/lib/formslib.php');
  30  require_once($CFG->dirroot.'/cohort/lib.php');
  31  
  32  /**
  33   * Auto group form class
  34   *
  35   * @package    core_group
  36   * @copyright  2007 mattc-catalyst (http://moodle.com)
  37   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   */
  39  class autogroup_form extends moodleform {
  40  
  41      /**
  42       * Form Definition
  43       */
  44      function definition() {
  45          global $USER, $COURSE;
  46          $coursecontext = context_course::instance($COURSE->id);
  47  
  48          $mform =& $this->_form;
  49  
  50          $mform->addElement('header', 'autogroup', get_string('general'));
  51  
  52          $mform->addElement('text', 'namingscheme', get_string('namingscheme', 'group'));
  53          $mform->addHelpButton('namingscheme', 'namingscheme', 'group');
  54          $mform->addRule('namingscheme', get_string('required'), 'required', null, 'client');
  55          $mform->setType('namingscheme', PARAM_TEXT);
  56          // There must not be duplicate group names in course.
  57          $template = get_string('grouptemplate', 'group');
  58          $gname = groups_parse_name($template, 0);
  59          if (!groups_get_group_by_name($COURSE->id, $gname)) {
  60              $mform->setDefault('namingscheme', $template);
  61          }
  62  
  63          $options = array('groups' => get_string('numgroups', 'group'),
  64                           'members' => get_string('nummembers', 'group'));
  65          $mform->addElement('select', 'groupby', get_string('groupby', 'group'), $options);
  66  
  67          $mform->addElement('text', 'number', get_string('number', 'group'),'maxlength="4" size="4"');
  68          $mform->setType('number', PARAM_INT);
  69          $mform->addRule('number', null, 'numeric', null, 'client');
  70          $mform->addRule('number', get_string('required'), 'required', null, 'client');
  71  
  72          // Enable group messaging for the groups to be auto-created.
  73          if (\core_message\api::can_create_group_conversation($USER->id, $coursecontext)) {
  74              $mform->addElement('selectyesno', 'enablemessaging', get_string('enablemessaging', 'group'));
  75              $mform->addHelpButton('enablemessaging', 'enablemessaging', 'group');
  76          }
  77  
  78          $mform->addElement('header', 'groupmembershdr', get_string('groupmembers', 'group'));
  79          $mform->setExpanded('groupmembershdr', true);
  80  
  81          $options = array(0=>get_string('all'));
  82          $options += $this->_customdata['roles'];
  83          $mform->addElement('select', 'roleid', get_string('selectfromrole', 'group'), $options);
  84  
  85          $student = get_archetype_roles('student');
  86          $student = reset($student);
  87  
  88          if ($student and array_key_exists($student->id, $options)) {
  89              $mform->setDefault('roleid', $student->id);
  90          }
  91  
  92          $coursecontext = context_course::instance($COURSE->id);
  93          if ($cohorts = cohort_get_available_cohorts($coursecontext, COHORT_WITH_ENROLLED_MEMBERS_ONLY, 0, 0)) {
  94              $options = array(0 => get_string('anycohort', 'cohort'));
  95              foreach ($cohorts as $c) {
  96                  $options[$c->id] = format_string($c->name, true, context::instance_by_id($c->contextid));
  97              }
  98              $mform->addElement('select', 'cohortid', get_string('selectfromcohort', 'cohort'), $options);
  99              $mform->setDefault('cohortid', '0');
 100          } else {
 101              $mform->addElement('hidden','cohortid');
 102              $mform->setType('cohortid', PARAM_INT);
 103              $mform->setConstant('cohortid', '0');
 104          }
 105  
 106          if ($groupings = groups_get_all_groupings($COURSE->id)) {
 107              $options = array();
 108              $options[0] = get_string('none');
 109              foreach ($groupings as $grouping) {
 110                  $options[$grouping->id] = format_string($grouping->name);
 111              }
 112              $mform->addElement('select', 'groupingid', get_string('selectfromgrouping', 'group'), $options);
 113              $mform->setDefault('groupingid', 0);
 114              $mform->disabledIf('groupingid', 'notingroup', 'checked');
 115          } else {
 116              $mform->addElement('hidden', 'groupingid');
 117              $mform->setType('groupingid', PARAM_INT);
 118              $mform->setConstant('groupingid', 0);
 119          }
 120  
 121          if ($groups = groups_get_all_groups($COURSE->id)) {
 122              $options = array();
 123              $options[0] = get_string('none');
 124              foreach ($groups as $group) {
 125                  $options[$group->id] = format_string($group->name);
 126              }
 127              $mform->addElement('select', 'groupid', get_string('selectfromgroup', 'group'), $options);
 128              $mform->setDefault('groupid', 0);
 129              $mform->disabledIf('groupid', 'notingroup', 'checked');
 130          } else {
 131              $mform->addElement('hidden', 'groupid');
 132              $mform->setType('groupid', PARAM_INT);
 133              $mform->setConstant('groupid', 0);
 134          }
 135  
 136          $options = array('no'        => get_string('noallocation', 'group'),
 137                           'random'    => get_string('random', 'group'),
 138                           'firstname' => get_string('byfirstname', 'group'),
 139                           'lastname'  => get_string('bylastname', 'group'),
 140                           'idnumber'  => get_string('byidnumber', 'group'));
 141          $mform->addElement('select', 'allocateby', get_string('allocateby', 'group'), $options);
 142          $mform->setDefault('allocateby', 'random');
 143  
 144          $mform->addElement('checkbox', 'nosmallgroups', get_string('nosmallgroups', 'group'));
 145          $mform->disabledIf('nosmallgroups', 'groupby', 'noteq', 'members');
 146  
 147          $mform->addElement('checkbox', 'notingroup', get_string('notingroup', 'group'));
 148          $mform->disabledIf('notingroup', 'groupingid', 'neq', 0);
 149          $mform->disabledIf('notingroup', 'groupid', 'neq', 0);
 150  
 151          if (has_capability('moodle/course:viewsuspendedusers', $coursecontext)) {
 152              $mform->addElement('checkbox', 'includeonlyactiveenrol', get_string('includeonlyactiveenrol', 'group'), '');
 153              $mform->addHelpButton('includeonlyactiveenrol', 'includeonlyactiveenrol', 'group');
 154              $mform->setDefault('includeonlyactiveenrol', true);
 155          }
 156  
 157          $mform->addElement('header', 'groupinghdr', get_string('grouping', 'group'));
 158  
 159          $options = array('0' => get_string('nogrouping', 'group'),
 160                           '-1'=> get_string('newgrouping', 'group'));
 161          if ($groupings = groups_get_all_groupings($COURSE->id)) {
 162              foreach ($groupings as $grouping) {
 163                  $options[$grouping->id] = strip_tags(format_string($grouping->name));
 164              }
 165          }
 166          $mform->addElement('select', 'grouping', get_string('createingrouping', 'group'), $options);
 167          if ($groupings) {
 168              $mform->setDefault('grouping', '-1');
 169          }
 170  
 171          $mform->addElement('text', 'groupingname', get_string('groupingname', 'group'), $options);
 172          $mform->setType('groupingname', PARAM_TEXT);
 173          $mform->disabledIf('groupingname', 'grouping', 'noteq', '-1');
 174  
 175          $mform->addElement('hidden','courseid');
 176          $mform->setType('courseid', PARAM_INT);
 177  
 178          $mform->addElement('hidden','seed');
 179          $mform->setType('seed', PARAM_INT);
 180  
 181          $buttonarray = array();
 182          $buttonarray[] = &$mform->createElement('submit', 'preview', get_string('preview'));
 183          $buttonarray[] = &$mform->createElement('submit', 'submitbutton', get_string('submit'));
 184          $buttonarray[] = &$mform->createElement('cancel');
 185          $mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
 186          $mform->closeHeaderBefore('buttonar');
 187      }
 188  
 189      /**
 190       * Performs validation of the form information
 191       *
 192       * @param array $data
 193       * @param array $files
 194       * @return array $errors An array of $errors
 195       */
 196      function validation($data, $files) {
 197          global $CFG, $COURSE;
 198          $errors = parent::validation($data, $files);
 199  
 200          if ($data['allocateby'] != 'no') {
 201              $source = array();
 202              if ($data['cohortid']) {
 203                  $source['cohortid'] = $data['cohortid'];
 204              }
 205              if ($data['groupingid']) {
 206                  $source['groupingid'] = $data['groupingid'];
 207              }
 208              if ($data['groupid']) {
 209                  $source['groupid'] = $data['groupid'];
 210              }
 211              if (!$users = groups_get_potential_members($data['courseid'], $data['roleid'], $source)) {
 212                  $errors['roleid'] = get_string('nousersinrole', 'group');
 213              }
 214  
 215             /// Check the number entered is sane
 216              if ($data['groupby'] == 'groups') {
 217                  $usercnt = count($users);
 218  
 219                  if ($data['number'] > $usercnt || $data['number'] < 1) {
 220                      $errors['number'] = get_string('toomanygroups', 'group', $usercnt);
 221                  }
 222              }
 223          }
 224  
 225          //try to detect group name duplicates
 226          $name = groups_parse_name(trim($data['namingscheme']), 0);
 227          if (groups_get_group_by_name($COURSE->id, $name)) {
 228              $errors['namingscheme'] = get_string('groupnameexists', 'group', $name);
 229          }
 230  
 231          // check grouping name duplicates
 232          if ( isset($data['grouping']) && $data['grouping'] == '-1') {
 233              $name = trim($data['groupingname']);
 234              if (empty($name)) {
 235                  $errors['groupingname'] = get_string('required');
 236              } else if (groups_get_grouping_by_name($COURSE->id, $name)) {
 237                  $errors['groupingname'] = get_string('groupingnameexists', 'group', $name);
 238              }
 239          }
 240  
 241         /// Check the naming scheme
 242          if ($data['groupby'] == 'groups' and $data['number'] == 1) {
 243              // we can use the name as is because there will be only one group max
 244          } else {
 245              $matchcnt = preg_match_all('/[#@]{1,1}/', $data['namingscheme'], $matches);
 246              if ($matchcnt != 1) {
 247                  $errors['namingscheme'] = get_string('badnamingscheme', 'group');
 248              }
 249          }
 250  
 251          return $errors;
 252      }
 253  }