moodle-local_mycerts/classes/external.php
Mark Nelson 08a385fc85 #70 Added mobile app support
This allows students to view the activity and download
their certificate. It also allows teachers to view the
list of issued certificates, with the ability to revoke
any.

This is for Moodle Mobile v3.5.0 (not to be confused with
your Moodle site version) and will not work on Mobile
versions earlier than this.

If you are running a Moodle site on version 3.4 or below
you will need to install the local_mobile plugin in order
for this to work.

If you are running a Moodle site on version 3.0 or below
then you will need to upgrade.
2018-06-06 22:58:47 +08:00

230 lines
7.5 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/>.
/**
* This is the external API for this tool.
*
* @package mod_customcert
* @copyright 2016 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace mod_customcert;
defined('MOODLE_INTERNAL') || die();
require_once("$CFG->libdir/externallib.php");
/**
* This is the external API for this tool.
*
* @copyright 2016 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class external extends \external_api {
/**
* Returns the save_element() parameters.
*
* @return \external_function_parameters
*/
public static function save_element_parameters() {
return new \external_function_parameters(
array(
'templateid' => new \external_value(PARAM_INT, 'The template id'),
'elementid' => new \external_value(PARAM_INT, 'The element id'),
'values' => new \external_multiple_structure(
new \external_single_structure(
array(
'name' => new \external_value(PARAM_ALPHANUMEXT, 'The field to update'),
'value' => new \external_value(PARAM_RAW, 'The value of the field'),
)
)
)
)
);
}
/**
* Handles saving element data.
*
* @param int $templateid The template id.
* @param int $elementid The element id.
* @param array $values The values to save
* @return array
*/
public static function save_element($templateid, $elementid, $values) {
global $DB;
$params = array(
'templateid' => $templateid,
'elementid' => $elementid,
'values' => $values
);
self::validate_parameters(self::save_element_parameters(), $params);
$template = $DB->get_record('customcert_templates', array('id' => $templateid), '*', MUST_EXIST);
$element = $DB->get_record('customcert_elements', array('id' => $elementid), '*', MUST_EXIST);
// Set the template.
$template = new \mod_customcert\template($template);
// Perform checks.
if ($cm = $template->get_cm()) {
self::validate_context(\context_module::instance($cm->id));
} else {
self::validate_context(\context_system::instance());
}
// Make sure the user has the required capabilities.
$template->require_manage();
// Set the values we are going to save.
$data = new \stdClass();
$data->id = $element->id;
$data->name = $element->name;
foreach ($values as $value) {
$field = $value['name'];
$data->$field = $value['value'];
}
// Get an instance of the element class.
if ($e = \mod_customcert\element_factory::get_element_instance($element)) {
return $e->save_form_elements($data);
}
return false;
}
/**
* Returns the save_element result value.
*
* @return \external_value
*/
public static function save_element_returns() {
return new \external_value(PARAM_BOOL, 'True if successful, false otherwise');
}
/**
* Returns get_element() parameters.
*
* @return \external_function_parameters
*/
public static function get_element_html_parameters() {
return new \external_function_parameters(
array(
'templateid' => new \external_value(PARAM_INT, 'The template id'),
'elementid' => new \external_value(PARAM_INT, 'The element id'),
)
);
}
/**
* Handles return the element's HTML.
*
* @param int $templateid The template id
* @param int $elementid The element id.
* @return string
*/
public static function get_element_html($templateid, $elementid) {
global $DB;
$params = array(
'templateid' => $templateid,
'elementid' => $elementid
);
self::validate_parameters(self::get_element_html_parameters(), $params);
$template = $DB->get_record('customcert_templates', array('id' => $templateid), '*', MUST_EXIST);
$element = $DB->get_record('customcert_elements', array('id' => $elementid), '*', MUST_EXIST);
// Set the template.
$template = new \mod_customcert\template($template);
// Perform checks.
if ($cm = $template->get_cm()) {
self::validate_context(\context_module::instance($cm->id));
} else {
self::validate_context(\context_system::instance());
}
// Get an instance of the element class.
if ($e = \mod_customcert\element_factory::get_element_instance($element)) {
return $e->render_html();
}
return '';
}
/**
* Returns the get_element result value.
*
* @return \external_value
*/
public static function get_element_html_returns() {
return new \external_value(PARAM_RAW, 'The HTML');
}
/**
* Returns the delete_issue() parameters.
*
* @return \external_function_parameters
*/
public static function delete_issue_parameters() {
return new \external_function_parameters(
array(
'certificateid' => new \external_value(PARAM_INT, 'The certificate id'),
'issueid' => new \external_value(PARAM_INT, 'The issue id'),
)
);
}
/**
* Handles deleting a customcert issue.
*
* @param int $certificateid The certificate id.
* @param int $issueid The issue id.
* @return bool
*/
public static function delete_issue($certificateid, $issueid) {
global $DB;
$params = [
'certificateid' => $certificateid,
'issueid' => $issueid
];
self::validate_parameters(self::delete_issue_parameters(), $params);
$certificate = $DB->get_record('customcert', ['id' => $certificateid], '*', MUST_EXIST);
$issue = $DB->get_record('customcert_issues', ['id' => $issueid, 'customcertid' => $certificateid], '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('customcert', $certificate->id, 0, false, MUST_EXIST);
// Make sure the user has the required capabilities.
$context = \context_module::instance($cm->id);
self::validate_context($context);
require_capability('mod/customcert:manage', $context);
// Delete the issue.
return $DB->delete_records('customcert_issues', ['id' => $issue->id]);
}
/**
* Returns the delete_issue result value.
*
* @return \external_value
*/
public static function delete_issue_returns() {
return new \external_value(PARAM_BOOL, 'True if successful, false otherwise');
}
}