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   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   * Cohort related management functions, this file needs to be included manually.
  19   *
  20   * @package    core_cohort
  21   * @copyright  2010 Petr Skoda  {@link http://skodak.org}
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require('../config.php');
  26  require($CFG->dirroot.'/course/lib.php');
  27  require($CFG->dirroot.'/cohort/lib.php');
  28  require($CFG->dirroot.'/cohort/edit_form.php');
  29  
  30  $id        = optional_param('id', 0, PARAM_INT);
  31  $contextid = optional_param('contextid', 0, PARAM_INT);
  32  $delete    = optional_param('delete', 0, PARAM_BOOL);
  33  $show      = optional_param('show', 0, PARAM_BOOL);
  34  $hide      = optional_param('hide', 0, PARAM_BOOL);
  35  $confirm   = optional_param('confirm', 0, PARAM_BOOL);
  36  $returnurl = optional_param('returnurl', '', PARAM_LOCALURL);
  37  
  38  require_login();
  39  
  40  $category = null;
  41  if ($id) {
  42      $cohort = $DB->get_record('cohort', array('id'=>$id), '*', MUST_EXIST);
  43      $context = context::instance_by_id($cohort->contextid, MUST_EXIST);
  44  } else {
  45      $context = context::instance_by_id($contextid, MUST_EXIST);
  46      if ($context->contextlevel != CONTEXT_COURSECAT and $context->contextlevel != CONTEXT_SYSTEM) {
  47          print_error('invalidcontext');
  48      }
  49      $cohort = new stdClass();
  50      $cohort->id          = 0;
  51      $cohort->contextid   = $context->id;
  52      $cohort->name        = '';
  53      $cohort->description = '';
  54  }
  55  
  56  require_capability('moodle/cohort:manage', $context);
  57  
  58  if ($returnurl) {
  59      $returnurl = new moodle_url($returnurl);
  60  } else {
  61      $returnurl = new moodle_url('/cohort/index.php', array('contextid'=>$context->id));
  62  }
  63  
  64  if (!empty($cohort->component)) {
  65      // We can not manually edit cohorts that were created by external systems, sorry.
  66      redirect($returnurl);
  67  }
  68  
  69  $PAGE->set_context($context);
  70  $baseurl = new moodle_url('/cohort/edit.php', array('contextid' => $context->id, 'id' => $cohort->id));
  71  $PAGE->set_url($baseurl);
  72  $PAGE->set_context($context);
  73  $PAGE->set_pagelayout('admin');
  74  
  75  if ($context->contextlevel == CONTEXT_COURSECAT) {
  76      $category = $DB->get_record('course_categories', array('id'=>$context->instanceid), '*', MUST_EXIST);
  77      navigation_node::override_active_url(new moodle_url('/cohort/index.php', array('contextid'=>$cohort->contextid)));
  78  
  79  } else {
  80      navigation_node::override_active_url(new moodle_url('/cohort/index.php', array()));
  81  }
  82  
  83  if ($delete and $cohort->id) {
  84      $PAGE->url->param('delete', 1);
  85      if ($confirm and confirm_sesskey()) {
  86          cohort_delete_cohort($cohort);
  87          redirect($returnurl);
  88      }
  89      $strheading = get_string('delcohort', 'cohort');
  90      $PAGE->navbar->add($strheading);
  91      $PAGE->set_title($strheading);
  92      $PAGE->set_heading($COURSE->fullname);
  93      echo $OUTPUT->header();
  94      echo $OUTPUT->heading($strheading);
  95      $yesurl = new moodle_url('/cohort/edit.php', array('id' => $cohort->id, 'delete' => 1,
  96          'confirm' => 1, 'sesskey' => sesskey(), 'returnurl' => $returnurl->out_as_local_url()));
  97      $message = get_string('delconfirm', 'cohort', format_string($cohort->name));
  98      echo $OUTPUT->confirm($message, $yesurl, $returnurl);
  99      echo $OUTPUT->footer();
 100      die;
 101  }
 102  
 103  if ($show && $cohort->id && confirm_sesskey()) {
 104      if (!$cohort->visible) {
 105          $record = (object)array('id' => $cohort->id, 'visible' => 1, 'contextid' => $cohort->contextid);
 106          cohort_update_cohort($record);
 107      }
 108      redirect($returnurl);
 109  }
 110  
 111  if ($hide && $cohort->id && confirm_sesskey()) {
 112      if ($cohort->visible) {
 113          $record = (object)array('id' => $cohort->id, 'visible' => 0, 'contextid' => $cohort->contextid);
 114          cohort_update_cohort($record);
 115      }
 116      redirect($returnurl);
 117  }
 118  
 119  $editoroptions = array('maxfiles'=>0, 'context'=>$context);
 120  if ($cohort->id) {
 121      // Edit existing.
 122      $cohort = file_prepare_standard_editor($cohort, 'description', $editoroptions, $context);
 123      $strheading = get_string('editcohort', 'cohort');
 124  
 125  } else {
 126      // Add new.
 127      $cohort = file_prepare_standard_editor($cohort, 'description', $editoroptions, $context);
 128      $strheading = get_string('addcohort', 'cohort');
 129  }
 130  
 131  $PAGE->set_title($strheading);
 132  $PAGE->set_heading($COURSE->fullname);
 133  $PAGE->navbar->add($strheading);
 134  
 135  $editform = new cohort_edit_form(null, array('editoroptions'=>$editoroptions, 'data'=>$cohort, 'returnurl'=>$returnurl));
 136  
 137  if ($editform->is_cancelled()) {
 138      redirect($returnurl);
 139  
 140  } else if ($data = $editform->get_data()) {
 141      $data = file_postupdate_standard_editor($data, 'description', $editoroptions, $context);
 142  
 143      if ($data->id) {
 144          cohort_update_cohort($data);
 145      } else {
 146          cohort_add_cohort($data);
 147      }
 148  
 149      if ($returnurl->get_param('showall') || $returnurl->get_param('contextid') == $data->contextid) {
 150          // Redirect to where we were before.
 151          redirect($returnurl);
 152      } else {
 153          // Use new context id, it has been changed.
 154          redirect(new moodle_url('/cohort/index.php', array('contextid' => $data->contextid)));
 155      }
 156  }
 157  
 158  echo $OUTPUT->header();
 159  echo $OUTPUT->heading($strheading);
 160  
 161  if (!$id && ($editcontrols = cohort_edit_controls($context, $baseurl))) {
 162      echo $OUTPUT->render($editcontrols);
 163  }
 164  
 165  echo $editform->display();
 166  echo $OUTPUT->footer();
 167