report/courseoverview/reportsgraph.php

   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  * Graph
  19  *
  20  * @package    report
  21  * @subpackage courseoverview
  22  * @copyright  1999 onwards Martin Dougiamas  {@link http://moodle.com}
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 require_once('../../config.php');
  27 require_once($CFG->dirroot.'/lib/statslib.php');
  28 require_once($CFG->dirroot.'/lib/graphlib.php');
  29
  30 $report     = required_param('report', PARAM_INT);
  31 $time       = required_param('time', PARAM_INT);
  32 $numcourses = required_param('numcourses', PARAM_INT);
  33
  34 require_login();
  35
  36 require_capability('report/courseoverview:view', context_system::instance());
  37
  38 stats_check_uptodate();
  39
  40 $param = stats_get_parameters($time,$report,SITEID,STATS_MODE_RANKED);
  41
  42 if (!empty($param->sql)) {
  43     $sql = $param->sql;
  44 } else {
  45     $sql = "SELECT courseid, $param->fields
  46               FROM {".'stats_'.$param->table."}
  47              WHERE timeend >= $param->timeafter AND stattype = 'activity' AND roleid = 0
  48           GROUP BY courseid
  49                    $param->extras
  50           ORDER BY $param->orderby";
  51 }
  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
  61 $graph = new graph(750,400);
  62
  63 $graph->parameter['legend'] = 'outside-right';
  64 $graph->parameter['legend_size'] = 10;
  65 $graph->parameter['x_axis_angle'] = 90;
  66 $graph->parameter['title'] = false; // moodle will do a nicer job.
  67 $graph->y_tick_labels = null;
  68 $graph->offset_relation = null;
  69 if ($report != STATS_REPORT_ACTIVE_COURSES) {
  70     $graph->parameter['y_decimal_left'] = 2;
  71 }
  72
  73 foreach ($courses as $c) {
  74     $graph->x_data[] = $DB->get_field('course', 'shortname', array('id'=>$c->courseid));
  75     $graph->y_data['bar1'][] = $c->{$param->graphline};
  76 }
  77 $graph->y_order = array('bar1');
  78 $graph->y_format['bar1'] = array('colour' => 'blue','bar' => 'fill','legend' => $param->{$param->graphline});
  79
  80 $graph->draw_stack();