moodle-block_mytreestudyplan/globallevels.php

<?php
if(isset($_SERVER['SCRIPT_FILENAME']))
{
	// If SCRIPT_FILENAME is set, use that so the symlinked directories the developmen environment uses are handled correctly
	$root = dirname(dirname(dirname($_SERVER['SCRIPT_FILENAME'])));
	error_log("Using {$root}/config.php");
	require_once($root."/config.php");
}
else
{
	// If not, assume the cwd is not symlinked and proceed as we are used to
	require_once("../../config.php");
}

// HOW DID WE ENSURE ONLY ADMINS CAN VIEW THIS PAGE?

require_once($CFG->libdir.'/adminlib.php');


admin_externalpage_setup("block_gradelevel_default_levels");

$systemcontext = context_system::instance();
// Check if user has capability to manage skills
require_capability('block/gradelevel:skillmanager', $systemcontext);


$PAGE->requires->js_call_amd('block_gradelevel/leveleditor', 'init');

print $OUTPUT->header();
print $OUTPUT->heading(get_string('cfgpage_globallevels', 'block_gradelevel'));

// render page for skill level 0 (global)
print block_gradelevel_skillmgmtservice::render_leveltable(0);
print $OUTPUT->footer();