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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Definition of the grade_overview_report class
*
* @package gradereport_overview
* @copyright 2007 Nicolas Connault
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once($CFG->dirroot . '/grade/report/lib.php');
require_once($CFG->libdir.'/tablelib.php');
/**
* Class providing an API for the overview report building and displaying.
* @uses grade_report
* @package gradereport_overview
*/
class grade_report_overview extends grade_report {
/**
* The user.
* @var object $user
*/
public $user;
/**
* The user's courses
* @var array $courses
*/
public $courses;
/**
* A flexitable to hold the data.
* @var object $table
*/
public $table;
/**
* Show student ranks within each course.
* @var array $showrank
*/
public $showrank;
/**
* show course/category totals if they contain hidden items
*/
var $showtotalsifcontainhidden;
/**
* An array of course ids that the user is a student in.
* @var array $studentcourseids
*/
public $studentcourseids;
/**
* An array of courses that the user is a teacher in.
* @var array $teachercourses
*/
public $teachercourses;
/**
* Constructor. Sets local copies of user preferences and initialises grade_tree.
* @param int $userid
* @param object $gpr grade plugin return tracking object
* @param string $context
*/
public function __construct($userid, $gpr, $context) {
global $CFG, $COURSE, $DB;
parent::__construct($COURSE->id, $gpr, $context);
// Get the user (for full name).
$this->user = $DB->get_record('user', array('id' => $userid));
// Load the user's courses.
$this->courses = enrol_get_users_courses($this->user->id, false, 'id, shortname, showgrades');
$this->showrank = array();
$this->showrank['any'] = false;
$this->showtotalsifcontainhidden = array();
$this->studentcourseids = array();
$this->teachercourses = array();
$roleids = explode(',', get_config('moodle', 'gradebookroles'));
if ($this->courses) {
foreach ($this->courses as $course) {
$this->showrank[$course->id] = grade_get_setting($course->id, 'report_overview_showrank', !empty($CFG->grade_report_overview_showrank));
if ($this->showrank[$course->id]) {
$this->showrank['any'] = true;
}
$this->showtotalsifcontainhidden[$course->id] = grade_get_setting($course->id, 'report_overview_showtotalsifcontainhidden', $CFG->grade_report_overview_showtotalsifcontainhidden);
$coursecontext = context_course::instance($course->id);
foreach ($roleids as $roleid) {
if (user_has_role_assignment($userid, $roleid, $coursecontext->id)) {
$this->studentcourseids[$course->id] = $course->id;
// We only need to check if one of the roleids has been assigned.
break;
}
}
if (has_capability('moodle/grade:viewall', $coursecontext, $userid)) {
$this->teachercourses[$course->id] = $course;
}
}
}
// base url for sorting by first/last name
$this->baseurl = $CFG->wwwroot.'/grade/overview/index.php?id='.$userid;
$this->pbarurl = $this->baseurl;
$this->setup_table();
}
/**
* Prepares the headers and attributes of the flexitable.
*/
public function setup_table() {
/*
* Table has 3 columns
*| course | final grade | rank (optional) |
*/
// setting up table headers
if ($this->showrank['any']) {
$tablecolumns = array('coursename', 'grade', 'rank');
$tableheaders = array($this->get_lang_string('coursename', 'grades'),
$this->get_lang_string('grade'),
$this->get_lang_string('rank', 'grades'));
} else {
$tablecolumns = array('coursename', 'grade');
$tableheaders = array($this->get_lang_string('coursename', 'grades'),
$this->get_lang_string('grade'));
}
$this->table = new flexible_table('grade-report-overview-'.$this->user->id);
$this->table->define_columns($tablecolumns);
$this->table->define_headers($tableheaders);
$this->table->define_baseurl($this->baseurl);
$this->table->set_attribute('cellspacing', '0');
$this->table->set_attribute('id', 'overview-grade');
$this->table->set_attribute('class', 'boxaligncenter generaltable');
$this->table->setup();
}
/**
* Set up the courses grades data for the report.
*
* @param bool $studentcoursesonly Only show courses that the user is a student of.
* @return array of course grades information
*/
public function setup_courses_data($studentcoursesonly) {
global $USER, $DB;
$coursesdata = array();
$numusers = $this->get_numusers(false);
foreach ($this->courses as $course) {
if (!$course->showgrades) {
continue;
}
// If we are only showing student courses and this course isn't part of the group, then move on.
if ($studentcoursesonly && !isset($this->studentcourseids[$course->id])) {
continue;
}
$coursecontext = context_course::instance($course->id);
if (!$course->visible && !has_capability('moodle/course:viewhiddencourses', $coursecontext)) {
// The course is hidden and the user isn't allowed to see it.
continue;
}
if (!has_capability('moodle/user:viewuseractivitiesreport', context_user::instance($this->user->id)) &&
((!has_capability('moodle/grade:view', $coursecontext) || $this->user->id != $USER->id) &&
!has_capability('moodle/grade:viewall', $coursecontext))) {
continue;
}
$coursesdata[$course->id]['course'] = $course;
$coursesdata[$course->id]['context'] = $coursecontext;
$canviewhidden = has_capability('moodle/grade:viewhidden', $coursecontext);
// Get course grade_item.
$courseitem = grade_item::fetch_course_item($course->id);
// Get the stored grade.
$coursegrade = new grade_grade(array('itemid' => $courseitem->id, 'userid' => $this->user->id));
$coursegrade->grade_item =& $courseitem;
$finalgrade = $coursegrade->finalgrade;
if (!$canviewhidden and !is_null($finalgrade)) {
if ($coursegrade->is_hidden()) {
$finalgrade = null;
} else {
$adjustedgrade = $this->blank_hidden_total_and_adjust_bounds($course->id,
$courseitem,
$finalgrade);
// We temporarily adjust the view of this grade item - because the min and
// max are affected by the hidden values in the aggregation.
$finalgrade = $adjustedgrade['grade'];
$courseitem->grademax = $adjustedgrade['grademax'];
$courseitem->grademin = $adjustedgrade['grademin'];
}
} else {
// We must use the specific max/min because it can be different for
// each grade_grade when items are excluded from sum of grades.
if (!is_null($finalgrade)) {
$courseitem->grademin = $coursegrade->get_grade_min();
$courseitem->grademax = $coursegrade->get_grade_max();
}
}
$coursesdata[$course->id]['finalgrade'] = $finalgrade;
$coursesdata[$course->id]['courseitem'] = $courseitem;
if ($this->showrank['any'] && $this->showrank[$course->id] && !is_null($finalgrade)) {
// Find the number of users with a higher grade.
// Please note this can not work if hidden grades involved :-( to be fixed in 2.0.
$params = array($finalgrade, $courseitem->id);
$sql = "SELECT COUNT(DISTINCT(userid))
FROM {grade_grades}
WHERE finalgrade IS NOT NULL AND finalgrade > ?
AND itemid = ?";
$rank = $DB->count_records_sql($sql, $params) + 1;
$coursesdata[$course->id]['rank'] = $rank;
$coursesdata[$course->id]['numusers'] = $numusers;
}
}
return $coursesdata;
}
/**
* Fill the table for displaying.
*
* @param bool $activitylink If this report link to the activity report or the user report.
* @param bool $studentcoursesonly Only show courses that the user is a student of.
*/
public function fill_table($activitylink = false, $studentcoursesonly = false) {
global $CFG, $DB, $OUTPUT, $USER;
if ($studentcoursesonly && count($this->studentcourseids) == 0) {
return false;
}
// Only show user's courses instead of all courses.
if ($this->courses) {
$coursesdata = $this->setup_courses_data($studentcoursesonly);
foreach ($coursesdata as $coursedata) {
$course = $coursedata['course'];
$coursecontext = $coursedata['context'];
$finalgrade = $coursedata['finalgrade'];
$courseitem = $coursedata['courseitem'];
$coursename = format_string(get_course_display_name_for_list($course), true, array('context' => $coursecontext));
// Link to the activity report version of the user grade report.
if ($activitylink) {
$courselink = html_writer::link(new moodle_url('/course/user.php', array('mode' => 'grade', 'id' => $course->id,
'user' => $this->user->id)), $coursename);
} else {
$courselink = html_writer::link(new moodle_url('/grade/report/user/index.php', array('id' => $course->id,
'userid' => $this->user->id, 'group' => $this->gpr->groupid)), $coursename);
}
$data = array($courselink, grade_format_gradevalue($finalgrade, $courseitem, true));
if ($this->showrank['any']) {
if ($this->showrank[$course->id] && !is_null($finalgrade)) {
$rank = $coursedata['rank'];
$numusers = $coursedata['numusers'];
$data[] = "$rank/$numusers";
} else {
// No grade, no rank.
// Or this course wants rank hidden.
$data[] = '-';
}
}
$this->table->add_data($data);
}
return true;
} else {
echo $OUTPUT->notification(get_string('notenrolled', 'grades'), 'notifymessage');
return false;
}
}
/**
* Prints or returns the HTML from the flexitable.
* @param bool $return Whether or not to return the data instead of printing it directly.
* @return string
*/
public function print_table($return=false) {
ob_start();
$this->table->print_html();
$html = ob_get_clean();
if ($return) {
return $html;
} else {
echo $html;
}
}
/**
* Print a table to show courses that the user is able to grade.
*/
public function print_teacher_table() {
$table = new html_table();
$table->head = array(get_string('coursename', 'grades'));
$table->data = null;
foreach ($this->teachercourses as $courseid => $course) {
$url = new moodle_url('/grade/report/index.php', array('id' => $courseid));
$table->data[] = array(html_writer::link($url, $course->fullname));
}
echo html_writer::table($table);
}
/**
* Processes the data sent by the form (grades and feedbacks).
* @param array $data
* @return bool Success or Failure (array of errors).
*/
function process_data($data) {
}
function process_action($target, $action) {
}
/**
* This report supports being set as the 'grades' report.
*/
public static function supports_mygrades() {
return true;
}
/**
* Check if the user can access the report.
*
* @param stdClass $systemcontext system context
* @param stdClass $context course context
* @param stdClass $personalcontext personal context
* @param stdClass $course course object
* @param int $userid userid
* @return bool true if the user can access the report
* @since Moodle 3.2
*/
public static function check_access($systemcontext, $context, $personalcontext, $course, $userid) {
global $USER;
$access = false;
if (has_capability('moodle/grade:viewall', $systemcontext)) {
// Ok - can view all course grades.
$access = true;
} else if (has_capability('moodle/grade:viewall', $context)) {
// Ok - can view any grades in context.
$access = true;
} else if ($userid == $USER->id and ((has_capability('moodle/grade:view', $context) and $course->showgrades)
|| $course->id == SITEID)) {
// Ok - can view own course grades.
$access = true;
} else if (has_capability('moodle/grade:viewall', $personalcontext) and $course->showgrades) {
// Ok - can view grades of this user - parent most probably.
$access = true;
} else if (has_capability('moodle/user:viewuseractivitiesreport', $personalcontext) and $course->showgrades) {
// Ok - can view grades of this user - parent most probably.
$access = true;
}
return $access;
}
/**
* Trigger the grade_report_viewed event
*
* @param stdClass $context course context
* @param int $courseid course id
* @param int $userid user id
* @since Moodle 3.2
*/
public static function viewed($context, $courseid, $userid) {
$event = \gradereport_overview\event\grade_report_viewed::create(
array(
'context' => $context,
'courseid' => $courseid,
'relateduserid' => $userid,
)
);
$event->trigger();
}
}
function grade_report_overview_settings_definition(&$mform) {
global $CFG;
//show rank
$options = array(-1 => get_string('default', 'grades'),
0 => get_string('hide'),
1 => get_string('show'));
if (empty($CFG->grade_report_overview_showrank)) {
$options[-1] = get_string('defaultprev', 'grades', $options[0]);
} else {
$options[-1] = get_string('defaultprev', 'grades', $options[1]);
}
$mform->addElement('select', 'report_overview_showrank', get_string('showrank', 'grades'), $options);
$mform->addHelpButton('report_overview_showrank', 'showrank', 'grades');
//showtotalsifcontainhidden
$options = array(-1 => get_string('default', 'grades'),
GRADE_REPORT_HIDE_TOTAL_IF_CONTAINS_HIDDEN => get_string('hide'),
GRADE_REPORT_SHOW_TOTAL_IF_CONTAINS_HIDDEN => get_string('hidetotalshowexhiddenitems', 'grades'),
GRADE_REPORT_SHOW_REAL_TOTAL_IF_CONTAINS_HIDDEN => get_string('hidetotalshowinchiddenitems', 'grades') );
if (!array_key_exists($CFG->grade_report_overview_showtotalsifcontainhidden, $options)) {
$options[-1] = get_string('defaultprev', 'grades', $options[0]);
} else {
$options[-1] = get_string('defaultprev', 'grades', $options[$CFG->grade_report_overview_showtotalsifcontainhidden]);
}
$mform->addElement('select', 'report_overview_showtotalsifcontainhidden', get_string('hidetotalifhiddenitems', 'grades'), $options);
$mform->addHelpButton('report_overview_showtotalsifcontainhidden', 'hidetotalifhiddenitems', 'grades');
}
/**
* Add nodes to myprofile page.
*
* @param \core_user\output\myprofile\tree $tree Tree object
* @param stdClass $user user object
* @param bool $iscurrentuser
* @param stdClass $course Course object
*/
function gradereport_overview_myprofile_navigation(core_user\output\myprofile\tree $tree, $user, $iscurrentuser, $course) {
if (empty($course)) {
// We want to display these reports under the site context.
$course = get_fast_modinfo(SITEID)->get_course();
}
$systemcontext = context_system::instance();
$usercontext = context_user::instance($user->id);
$coursecontext = context_course::instance($course->id);
if (grade_report_overview::check_access($systemcontext, $coursecontext, $usercontext, $course, $user->id)) {
$url = new moodle_url('/grade/report/overview/index.php', array('userid' => $user->id, 'id' => $course->id));
$node = new core_user\output\myprofile\node('reports', 'grades', get_string('gradesoverview', 'gradereport_overview'),
null, $url);
$tree->add_node($node);
}
}