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block_study_day.php
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block_study_day.php
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<?php
class block_study_day extends block_base {
public function init() {
$this->title = get_string('pluginname', 'block_study_day');
}
public function get_content() {
global $USER, $DB;
if ($this->content !== null) {
return $this->content;
}
$this->content = new stdClass();
// Get data for polar chart
$data = $this->get_login_data_for_chart($USER->id);
// Chart data setup
$labels = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];
$colors = ['#FFA043', '#1F7BF4', 'pink', 'lightgreen', 'gold', 'lightblue', 'blue'];
// Prepare dataset for Chart.js
$datasets[] = [
'label' => get_string('numlogins', 'block_study_day'),
'data' => $data,
'backgroundColor' => $colors,
];
// Chart configuration
$chart_data = [
'type' => 'polarArea',
'data' => [
'labels' => $labels,
'datasets' => $datasets,
],
'options' => [
'responsive' => true,
],
];
// Render chart HTML
$chart_html = html_writer::tag('canvas', '', [
'id' => 'polarchart',
'width' => '580',
'height' => '350',
'aria-label' => 'chart',
]);
// Include Chart.js library
$chart_html .= html_writer::script('https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.1.1/chart.min.js');
// Script to render the chart
$chart_html .= html_writer::script('
var chrt = document.getElementById("polarchart").getContext("2d");
var polarchart = new Chart(chrt, ' . json_encode($chart_data) . ');
');
// Set content
$this->content->text = $chart_html;
$this->content->footer = '';
return $this->content;
}
// Function to get login data for the current user
private function get_login_data_for_chart($userid) {
global $DB;
$sql = "
SELECT
DAYNAME(FROM_UNIXTIME(ls.timecreated)) AS DayOfWeek,
COUNT(*) AS NumLogins
FROM
{logstore_standard_log} ls
WHERE
ls.userid = :userid
AND ls.action = 'loggedin'
GROUP BY
DayOfWeek
ORDER BY
FIELD(DayOfWeek, 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday')
";
$params = ['userid' => $userid];
$results = $DB->get_records_sql_menu($sql, $params);
// Initialize data array with zeros for all days
$data = array_fill_keys(['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'], 0);
// Populate data with actual login counts
foreach ($results as $day => $count) {
$data[$day] = intval($count);
}
return array_values($data); // Return values as an indexed array
}
}