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193 lines
6.8 KiB
193 lines
6.8 KiB
<?php
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/**
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* This file is part of student graph block plugin for dashboard,
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* it should be required inside dashboard controller for showing it into dashboard interface from plattform
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* @package chamilo.dashboard
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* @author Christian Fasanando
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*/
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/**
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* required files for getting data
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*/
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require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
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require_once api_get_path(LIBRARY_PATH).'course.lib.php';
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require_once api_get_path(LIBRARY_PATH).'tracking.lib.php';
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require_once api_get_path(LIBRARY_PATH).'attendance.lib.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pData.class.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pChart.class.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pCache.class.php';
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/gradebookitem.class.php';
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/evaluation.class.php';
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/result.class.php';
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/linkfactory.class.php';
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require_once api_get_path(SYS_CODE_PATH).'gradebook/lib/be/category.class.php';
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/**
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* This class is used like controller for student graph block plugin,
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* the class name must be registered inside path.info file (e.g: controller = "BlockStudentGraph"), so dashboard controller will be instantiate it
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* @package chamilo.dashboard
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*/
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class BlockStudentGraph extends Block {
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private $user_id;
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private $students;
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private $path;
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/**
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* Constructor
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*/
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public function __construct ($user_id) {
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$this->user_id = $user_id;
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if (api_is_platform_admin()) {
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$this->students = UserManager::get_user_list(array('status' => STUDENT));
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} else if (api_is_drh()) {
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$this->students = UserManager::get_users_followed_by_drh($user_id, STUDENT);
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}
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$this->path = 'block_student_graph';
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}
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/**
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* This method return content html containing information about students and its position for showing it inside dashboard interface
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* it's important to use the name 'get_block' for beeing used from dashboard controller
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* @return array column and content html
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*/
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public function get_block() {
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global $charset;
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$column = 1;
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$data = array();
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/*
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if (api_is_platform_admin()) {
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$student_content_html = $this->get_students_content_html_for_platform_admin();
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} else if (api_is_drh()) {*/
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$students_evaluation_graph = $this->get_students_evaluation_graph();
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//}
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$html = '
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<li class="widget color-orange" id="intro">
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<div class="widget-head">
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<h3>'.get_lang('StudentsInformationsGraph').'</h3>
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<div class="widget-actions"><a onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)).'\')) return false;" href="index.php?action=disable_block&path='.$this->path.'">'.Display::return_icon('close.gif',get_lang('Close')).'</a></div>
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</div>
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<div class="widget-content" align="center">
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'.$students_evaluation_graph.'
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</div>
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</li>
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';
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$data['column'] = $column;
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$data['content_html'] = $html;
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return $data;
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}
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/**
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* This method return a graph containing informations about students evaluation, it's used inside get_block method for showing it inside dashboard interface
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* @return string img html
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*/
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public function get_students_evaluation_graph() {
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$students = $this->students;
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$attendance = new Attendance();
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// get data
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$attendances_faults_avg = array();
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foreach ($students as $student) {
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$student_id = $student['user_id'];
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$student_info = api_get_user_info($student_id);
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// get average of faults in attendances by student
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$results_faults_avg = $attendance->get_faults_average_inside_courses($student_id);
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if (!empty($results_faults_avg)) {
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$attendances_faults_avg[$student_info['username']] = $results_faults_avg['porcent'];
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} else {
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$attendances_faults_avg[$student_info['username']] = 0;
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}
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}
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arsort($attendances_faults_avg);
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$usernames = array_keys($attendances_faults_avg);
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// get only until five users
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if (count($usernames) > 5) { array_splice($usernames,5); }
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$faults = array();
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foreach ($usernames as $username) {
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$faults[] = $attendances_faults_avg[$username];
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}
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$graph = '';
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$img_file = '';
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if (is_array($usernames) && count($usernames) > 0) {
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// Defining data
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$data_set = new pData;
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$data_set->AddPoint($usernames,"Usuario");
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$data_set->AddPoint($faults,"Promedio");
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$data_set->AddAllSeries();
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$data_set->SetXAxisName(get_lang('UserName'));
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$data_set->SetYAxisName(get_lang('AttendancesFaults'));
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$data_set->SetAbsciseLabelSerie("Usuario");
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$graph_id = $this->user_id.'StudentEvaluationGraph';
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$cache = new pCache();
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// the graph id
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$data = $data_set->GetData();
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if ($cache->IsInCache($graph_id, $data_set->GetData())) {
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//if we already created the img
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$img_file = $cache->GetHash($graph_id, $data_set->GetData());
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} else {
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// Initializing the graph
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$test = new pChart(365,250);
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$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
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$test->setGraphArea(50,30,345,200);
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$test->drawFilledRoundedRectangle(7,7,371,240,5,240,240,240);
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$test->drawRoundedRectangle(5,5,373,225,5,230,230,230);
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$test->drawGraphArea(255,255,255,TRUE);
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$test->setFixedScale(0,100,5);
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$test->drawScale($data_set->GetData(),$data_set->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,10,TRUE);
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$test->drawGrid(4,TRUE,230,230,230,50);
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// Drawing bars
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$test->drawBarGraph($data_set->GetData(),$data_set->GetDataDescription(),TRUE);
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// Drawing title
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$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',10);
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$test->drawTitle(50,22,get_lang('AttendancesFaults'),50,50,50,385);
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$test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),"Promedio");
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$cache->WriteToCache($graph_id, $data_set->GetData(), $test);
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ob_start();
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$test->Stroke();
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ob_end_clean();
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$img_file = $cache->GetHash($graph_id, $data_set->GetData());
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}
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if (!empty($img_file)) {
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$graph = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
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}
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} else {
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$graph = '<p>'.api_convert_encoding(get_lang('GraphicNotAvailable'),'UTF-8').'</p>';
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}
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return $graph;
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}
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/**
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* Get number of students
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* @return int
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*/
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function get_number_of_students() {
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return count($this->students);
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}
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}
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?>
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