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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   * Performs course category management ajax actions.
  19   *
  20   * Please note functions may throw exceptions, please ensure your JS handles them as well as the outcome objects.
  21   *
  22   * @package    core_course
  23   * @copyright  2013 Sam Hemelryk
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  
  27  define('AJAX_SCRIPT', true);
  28  
  29  require_once('../../config.php');
  30  require_once($CFG->dirroot.'/lib/coursecatlib.php');
  31  require_once($CFG->dirroot.'/course/lib.php');
  32  
  33  $action = required_param('action', PARAM_ALPHA);
  34  require_sesskey(); // Gotta have the sesskey.
  35  require_login(); // Gotta be logged in (of course).
  36  $PAGE->set_context(context_system::instance());
  37  
  38  // Prepare an outcome object. We always use this.
  39  $outcome = new stdClass;
  40  $outcome->error = false;
  41  $outcome->outcome = false;
  42  
  43  echo $OUTPUT->header();
  44  
  45  switch ($action) {
  46      case 'movecourseup' :
  47          $courseid = required_param('courseid', PARAM_INT);
  48          $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_up_one_by_record($courseid);
  49          break;
  50      case 'movecoursedown' :
  51          $courseid = required_param('courseid', PARAM_INT);
  52          $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_down_one_by_record($courseid);
  53          break;
  54      case 'movecourseintocategory':
  55          $courseid = required_param('courseid', PARAM_INT);
  56          $categoryid = required_param('categoryid', PARAM_INT);
  57          $course = get_course($courseid);
  58          $oldcategory = coursecat::get($course->category);
  59          $category = coursecat::get($categoryid);
  60          $outcome->outcome = \core_course\management\helper::move_courses_into_category($category, $courseid);
  61          $perpage = (int)get_user_preferences('coursecat_management_perpage', $CFG->coursesperpage);
  62          $totalcourses = $oldcategory->get_courses_count();
  63          $totalpages = ceil($totalcourses / $perpage);
  64          if ($totalpages == 0) {
  65              $str = get_string('nocoursesyet');
  66          } else if ($totalpages == 1) {
  67              $str = get_string('showingacourses', 'moodle', $totalcourses);
  68          } else {
  69              $a = new stdClass;
  70              $a->start = ($page * $perpage) + 1;
  71              $a->end = min((($page + 1) * $perpage), $totalcourses);
  72              $a->total = $totalcourses;
  73              $str = get_string('showingxofycourses', 'moodle', $a);
  74          }
  75          $outcome->totalcatcourses = $category->get_courses_count();
  76          $outcome->fromcatcoursecount = $totalcourses;
  77          $outcome->paginationtotals = $str;
  78          break;
  79      case 'movecourseafter' :
  80          $courseid = required_param('courseid', PARAM_INT);
  81          $moveaftercourseid = required_param('moveafter', PARAM_INT);
  82          $outcome->outcome = \core_course\management\helper::action_course_change_sortorder_after_course(
  83              $courseid, $moveaftercourseid);
  84          break;
  85      case 'hidecourse' :
  86          $courseid = required_param('courseid', PARAM_INT);
  87          $outcome->outcome = \core_course\management\helper::action_course_hide_by_record($courseid);
  88          break;
  89      case 'showcourse' :
  90          $courseid = required_param('courseid', PARAM_INT);
  91          $outcome->outcome = \core_course\management\helper::action_course_show_by_record($courseid);
  92          break;
  93      case 'movecategoryup' :
  94          $categoryid = required_param('categoryid', PARAM_INT);
  95          $outcome->outcome = \core_course\management\helper::action_category_change_sortorder_up_one_by_id($categoryid);
  96          break;
  97      case 'movecategorydown' :
  98          $categoryid = required_param('categoryid', PARAM_INT);
  99          $outcome->outcome = \core_course\management\helper::action_category_change_sortorder_down_one_by_id($categoryid);
 100          break;
 101      case 'hidecategory' :
 102          $categoryid = required_param('categoryid', PARAM_INT);
 103          $selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
 104          $outcome->outcome = \core_course\management\helper::action_category_hide_by_id($categoryid);
 105          $outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
 106          $outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
 107          if ($selectedcategoryid !== null) {
 108              $outcome->coursevisibility = array_merge(
 109                  $outcome->coursevisibility,
 110                  \core_course\management\helper::get_category_courses_visibility($selectedcategoryid)
 111              );
 112          }
 113          break;
 114      case 'showcategory' :
 115          $categoryid = required_param('categoryid', PARAM_INT);
 116          $selectedcategoryid = optional_param('selectedcategory', null, PARAM_INT);
 117          $outcome->outcome = \core_course\management\helper::action_category_show_by_id($categoryid);
 118          $outcome->categoryvisibility = \core_course\management\helper::get_category_children_visibility($categoryid);
 119          $outcome->coursevisibility = \core_course\management\helper::get_category_courses_visibility($categoryid);
 120          if ($selectedcategoryid !== null) {
 121              $outcome->coursevisibility = array_merge(
 122                  $outcome->coursevisibility,
 123                  \core_course\management\helper::get_category_courses_visibility($selectedcategoryid)
 124              );
 125          }
 126          break;
 127      case 'expandcategory':
 128          $categoryid = required_param('categoryid', PARAM_INT);
 129          $coursecat = coursecat::get($categoryid);
 130          \core_course\management\helper::record_expanded_category($coursecat);
 131          $outcome->outcome = true;
 132          break;
 133      case 'collapsecategory':
 134          $categoryid = required_param('categoryid', PARAM_INT);
 135          $coursecat = coursecat::get($categoryid);
 136          \core_course\management\helper::record_expanded_category($coursecat, false);
 137          $outcome->outcome = true;
 138          break;
 139      case 'getsubcategorieshtml' :
 140          $categoryid = required_param('categoryid', PARAM_INT);
 141          /* @var core_course_management_renderer $renderer */
 142          $renderer = $PAGE->get_renderer('core_course', 'management');
 143          $outcome->html = html_writer::start_tag('ul',
 144              array('class' => 'ml', 'role' => 'group', 'id' => 'subcategoriesof'.$categoryid));
 145          $coursecat = coursecat::get($categoryid);
 146          foreach ($coursecat->get_children() as $subcat) {
 147              $outcome->html .= $renderer->category_listitem($subcat, array(), $subcat->get_children_count());
 148          }
 149          $outcome->html .= html_writer::end_tag('ul');
 150          $outcome->outcome = true;
 151          break;
 152  }
 153  
 154  echo json_encode($outcome);
 155  echo $OUTPUT->footer();
 156  // Thats all folks.
 157  // Don't ever even consider putting anything after this. It just wouldn't make sense.
 158  // But you already knew that, you smart developer you.
 159  exit;