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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* @package report_overviewstats
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* @copyright 2013 David Mudrak <david@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Reports the number of users from each country
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*/
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class report_overviewstats_chart_countries extends report_overviewstats_chart {
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/**
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* @return array
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*/
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public function get_content() {
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$this->prepare_data();
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$title = get_string('chart-countries', 'report_overviewstats');
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$info = html_writer::div(get_string('chart-countries-info', 'report_overviewstats', count($this->data)), 'chartinfo');
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$chart = html_writer::tag('div', '', array(
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'id' => 'chart_countries',
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'class' => 'chartplaceholder',
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'style' => 'min-height: '.max(66, (count($this->data) * 20)).'px;'
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));
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return array($title => $info . $chart);
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}
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/**
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* @see parent
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*/
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public function inject_page_requirements(moodle_page $page) {
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$this->prepare_data();
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$page->requires->yui_module(
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'moodle-report_overviewstats-charts',
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'M.report_overviewstats.charts.countries.init',
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array($this->data)
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);
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}
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/**
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* Prepares data to report.
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*/
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protected function prepare_data() {
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global $DB;
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if (!is_null($this->data)) {
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return;
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}
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$sql = "SELECT country, COUNT(*)
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FROM {user}
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WHERE country IS NOT NULL AND country <> '' AND deleted = 0 AND confirmed = 1
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GROUP BY country
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ORDER BY COUNT(*) DESC, country ASC";
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$data = array();
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foreach ($DB->get_records_sql_menu($sql) as $country => $count) {
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if (get_string_manager()->string_exists($country, 'core_countries')) {
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$countryname = get_string($country, 'core_countries');
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} else {
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$countryname = $country;
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}
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$data[] = array(
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'country' => $countryname,
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'count' => $count
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);
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}
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$this->data = $data;
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}
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}
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