report/stats/graph.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  * This file is part of the User section Moodle
  19  *
  20  * @package    report
  21  * @subpackage stats
  22  * @copyright  1999 onwards Martin Dougiamas (http://dougiamas.com)
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 require('../../config.php');
  27 require_once($CFG->dirroot.'/report/stats/locallib.php');
  28 require_once($CFG->dirroot.'/lib/graphlib.php');
  29
  30 $courseid = required_param('course', PARAM_INT);
  31 $report   = required_param('report', PARAM_INT);
  32 $time     = required_param('time', PARAM_INT);
  33 $mode     = required_param('mode', PARAM_INT);
  34 $userid   = optional_param('userid', 0, PARAM_INT);
  35 $roleid   = optional_param('roleid',0,PARAM_INT);
  36
  37 $url = new moodle_url('/report/stats/graph.php', array('course'=>$courseid, 'report'=>$report, 'time'=>$time, 'mode'=>$mode, 'userid'=>$userid, 'roleid'=>$roleid));
  38 $PAGE->set_url($url);
  39
  40 $course = $DB->get_record("course", array("id"=>$courseid), '*', MUST_EXIST);
  41 $coursecontext   = context_course::instance($course->id);
  42 $PAGE->set_context($coursecontext);
  43
  44 if (!empty($userid)) {
  45     $user = $DB->get_record('user', array('id'=>$userid, 'deleted'=>0), '*', MUST_EXIST);
  46     $personalcontext = context_user::instance($user->id);
  47
  48     if ($USER->id != $user->id and has_capability('moodle/user:viewuseractivitiesreport', $personalcontext)
  49             and !is_enrolled($coursecontext, $USER) and is_enrolled($coursecontext, $user)) {
  50         //TODO: do not require parents to be enrolled in courses - this is a hack!
  51         require_login();
  52         $PAGE->set_course($course);
  53     } else {
  54         require_login($course);
  55     }
  56
  57     if (!report_stats_can_access_user_report($user, $course, true)) {
  58         require_capability('report/stats:view', $coursecontext);
  59     }
  60 } else if ($mode === STATS_MODE_DETAILED) {
  61     print_error('invaliduser');
  62 } else {
  63     require_capability('report/stats:view', $coursecontext);
  64 }
  65
  66 stats_check_uptodate($course->id);
  67
  68 $param = stats_get_parameters($time,$report,$course->id,$mode);
  69
  70 if (!empty($userid)) {
  71     $param->table = 'user_'.$param->table;
  72 }
  73
  74 // TODO: cleanup this ugly mess!
  75 $sql = 'SELECT '.((empty($param->fieldscomplete)) ? 'id,roleid,timeend,' : '').$param->fields
  76 .' FROM {stats_'.$param->table.'} WHERE '
  77 .(($course->id == SITEID) ? '' : ' courseid = '.$course->id.' AND ')
  78  .((!empty($userid)) ? ' userid = '.$userid.' AND ' : '')
  79  .((!empty($roleid)) ? ' roleid = '.$roleid.' AND ' : '')
  80  . ((!empty($param->stattype)) ? ' stattype = \''.$param->stattype.'\' AND ' : '')
  81  .' timeend >= '.$param->timeafter
  82 .' '.$param->extras
  83 .' ORDER BY timeend DESC';
  84
  85 $stats = $DB->get_records_sql($sql, $param->params);
  86
  87 $stats = stats_fix_zeros($stats,$param->timeafter,$param->table,(!empty($param->line2)),(!empty($param->line3)));
  88
  89 $stats = array_reverse($stats);
  90
  91 $graph = new graph(750,400);
  92
  93 $graph->parameter['legend'] = 'outside-right';
  94 $graph->parameter['legend_size'] = 10;
  95 $graph->parameter['x_axis_angle'] = 90;
  96 $graph->parameter['title'] = false; // moodle will do a nicer job.
  97 $graph->y_tick_labels = null;
  98
  99 if (empty($param->crosstab)) {
 100     foreach ($stats as $stat) {
 101         $graph->x_data[] = userdate($stat->timeend,get_string('strftimedate'),$CFG->timezone);
 102         $graph->y_data['line1'][] = $stat->line1;
 103         if (isset($stat->line2)) {
 104             $graph->y_data['line2'][] = $stat->line2;
 105         }
 106         if (isset($stat->line3)) {
 107             $graph->y_data['line3'][] = $stat->line3;
 108         }
 109     }
 110     $graph->y_order = array('line1');
 111     $graph->y_format['line1'] = array('colour' => 'blue','line' => 'line','legend' => $param->line1);
 112     if (!empty($param->line2)) {
 113         $graph->y_order[] = 'line2';
 114         $graph->y_format['line2'] = array('colour' => 'green','line' => 'line','legend' => $param->line2);
 115     }
 116     if (!empty($param->line3)) {
 117         $graph->y_order[] = 'line3';
 118         $graph->y_format['line3'] = array('colour' => 'red','line' => 'line','legend' => $param->line3);
 119     }
 120     $graph->y_tick_labels = false;
 121
 122 } else {
 123     $data = array();
 124     $times = array();
 125     $roles = array();
 126     $missedlines = array();
 127     $rolenames = role_fix_names(get_all_roles($coursecontext), $coursecontext, ROLENAME_ALIAS, true);
 128     foreach ($stats as $stat) {
 129         $data[$stat->roleid][$stat->timeend] = $stat->line1;
 130         if (!empty($stat->zerofixed)) {
 131             $missedlines[] = $stat->timeend;
 132         }
 133         if ($stat->roleid != 0) {
 134             if (!array_key_exists($stat->roleid,$roles)) {
 135                 $roles[$stat->roleid] = $rolenames[$stat->roleid];
 136             }
 137         } else {
 138             if (!array_key_exists($stat->roleid,$roles)) {
 139                 $roles[$stat->roleid] = get_string('all');
 140             }
 141         }
 142         if (!array_key_exists($stat->timeend,$times)) {
 143             $times[$stat->timeend] = userdate($stat->timeend,get_string('strftimedate'),$CFG->timezone);
 144         }
 145     }
 146     foreach (array_keys($times) as $t) {
 147         foreach ($data as $roleid => $stuff) {
 148             if (!array_key_exists($t, $stuff)) {
 149                 $data[$roleid][$t] = 0;
 150             }
 151         }
 152     }
 153
 154     $roleid = 0;
 155     krsort($roles); // the same sorting as in table below graph
 156
 157     $colors = array('green', 'blue', 'red', 'purple', 'yellow', 'olive', 'navy', 'maroon', 'gray', 'ltred', 'ltltred', 'ltgreen', 'ltltgreen', 'orange', 'ltorange', 'ltltorange', 'lime', 'ltblue', 'ltltblue', 'fuchsia', 'aqua', 'grayF0', 'grayEE', 'grayDD', 'grayCC', 'gray33', 'gray66', 'gray99');
 158     $colorindex = 0;
 159
 160     foreach ($roles as $roleid=>$rname) {
 161         ksort($data[$roleid]);
 162         $graph->y_order[] = $roleid+1;
 163         if ($roleid) {
 164             $color = $colors[$colorindex++];
 165             $colorindex = $colorindex % count($colors);
 166         } else {
 167             $color = 'black';
 168         }
 169         $graph->y_format[$roleid+1] = array('colour' => $color, 'line' => 'line','legend' => $rname);
 170     }
 171     foreach (array_keys($data[$roleid]) as $time) {
 172         $graph->x_data[] = $times[$time];
 173     }
 174     foreach ($data as $roleid => $t) {
 175         foreach ($t as $time => $data) {
 176             $graph->y_data[$roleid+1][] = $data;
 177         }
 178     }
 179 }
 180
 181 $graph->draw_stack();
 182