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Differences Between: [Versions 400 and 401] [Versions 400 and 402] [Versions 400 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   * This file contains functions used by the course overview report.
  19   *
  20   * @package    report_courseoverview
  21   * @copyright  2016 Simey Lameze <simey@moodle.com>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  defined('MOODLE_INTERNAL') || die;
  25  
  26  require_once('../../config.php');
  27  require_once($CFG->dirroot . '/lib/statslib.php');
  28  
  29  /**
  30   * Gather course overview data and print the chart.
  31   *
  32   * @param int $report represents the report type field on the course overview report filter.
  33   * @param int $time represents the time period field on the course overview report filter.
  34   * @param int $numcourses represents the number of courses field on the course overview report filter.
  35   * @return void
  36   */
  37  function report_courseoverview_print_chart($report, $time, $numcourses) {
  38      global $DB, $OUTPUT, $PAGE;
  39  
  40      $param = stats_get_parameters($time, $report, SITEID, STATS_MODE_RANKED);
  41      if (!empty($param->sql)) {
  42          $sql = $param->sql;
  43      } else {
  44          $sql = "SELECT courseid, $param->fields
  45                    FROM {" . 'stats_' . $param->table . "}
  46                   WHERE timeend >= $param->timeafter
  47                     AND stattype = 'activity'
  48                     AND roleid = 0
  49                GROUP BY courseid
  50                     $param->extras
  51                ORDER BY $param->orderby";
  52      }
  53      $courses = $DB->get_records_sql($sql, $param->params, 0, $numcourses);
  54  
  55      if (empty($courses)) {
  56          $PAGE->set_url('/report/courseoverview/index.php');
  57          print_error('statsnodata', 'error', $PAGE->url->out());
  58      }
  59  
  60      $data = [];
  61      $i = 0;
  62      foreach ($courses as $c) {
  63          $data['labels'][$i] = $DB->get_field('course', 'shortname', array('id' => $c->courseid));
  64  
  65          // Line3 represents the third column of the report table except for the most active users report.
  66          // It is a float number and can be participation radio or activity per user.
  67          if (isset($c->line3)) {
  68              $data['series'][$i] = round($c->line3, 2);
  69          } else {
  70              $data['series'][$i] = $c->{$param->graphline};
  71          }
  72          $i++;
  73      }
  74  
  75      $chart = new \core\chart_bar();
  76      $series = new \core\chart_series($param->{$param->graphline}, $data['series']);
  77      $chart->add_series($series);
  78      $chart->set_labels($data['labels']);
  79  
  80      echo $OUTPUT->render($chart);
  81  }