Files
moodle/lib/classes/router/parameters/path_course.php
2024-08-06 16:01:07 +08:00

136 lines
4.2 KiB
PHP

<?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/>.
namespace core\router\parameters;
use core\exception\not_found_exception;
use core\param;
use core\router\schema\example;
use core\router\schema\parameters\mapped_property_parameter;
use core\router\schema\referenced_object;
use Psr\Http\Message\ServerRequestInterface;
/**
* A Moodle parameter referenced in the path.
*
* @package core
* @copyright 2023 Andrew Lyons <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class path_course extends \core\router\schema\parameters\path_parameter implements
mapped_property_parameter,
referenced_object
{
/**
* Create a new path_course parameter.
*
* @param string $name The name of the parameter to use for the course identifier
* @param mixed ...$extra Additional arguments
*/
public function __construct(
string $name = 'course',
...$extra,
) {
$extra['name'] = $name;
$extra['type'] = param::RAW;
$extra['description'] = <<<EOF
The course identifier.
This can be the id of the course, the idnumber of the course, or the shortname of the course.
If specifying a course idnumber, the value should be in the format `idnumber:[idnumber]`.
If specifying a course shortname, the value should be in the format `name:[shortname]`.
EOF;
$extra['examples'] = [
new example(
name: 'A course id',
value: 54,
),
new example(
name: 'A course specified by its idnumber',
value: 'idnumber:000117-physics-101-1',
),
new example(
name: 'A course specified by its shortname',
value: 'name:000117-phys101-0',
),
];
parent::__construct(...$extra);
}
/**
* Get the course object for the given identifier.
*
* @param string $value A course id, idnumber, or shortname
* @return object
* @throws not_found_exception If the course cannot be found
*/
protected function get_course_for_value(string $value): mixed {
global $DB;
$data = false;
if (is_numeric($value)) {
$data = $DB->get_record('course', [
'id' => $value,
]);
} else if (str_starts_with($value, 'idnumber:')) {
$data = $DB->get_record('course', [
'idnumber' => substr($value, strlen('idnumber:')),
]);
} else if (str_starts_with($value, 'name:')) {
$data = $DB->get_record('course', [
'shortname' => substr($value, strlen('name:')),
]);
}
if ($data) {
return $data;
}
throw new not_found_exception('course', $value);
}
#[\Override]
public function add_attributes_for_parameter_value(
ServerRequestInterface $request,
string $value,
): ServerRequestInterface {
$course = $this->get_course_for_value($value);
return $request
->withAttribute($this->name, $course)
->withAttribute("{$this->name}context", \core\context\course::instance($course->id));
}
#[\Override]
public function get_schema_from_type(param $type): \stdClass {
$schema = parent::get_schema_from_type($type);
$schema->pattern = "^(";
$schema->pattern .= implode("|", [
'\d+',
'idnumber:.+',
'name:.+',
]);
$schema->pattern .= ")$";
return $schema;
}
}