trade_edit.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/>.

/**
 * Trade edit page.
 *
 * @package    block_stash
 * @copyright  2017 Adrian Greeve <adriangreeve.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . '/../../config.php');

$courseid = required_param('courseid', PARAM_INT);
$id = optional_param('id', '0', PARAM_INT);

require_login($courseid);

$manager = \block_stash\manager::get($courseid);
$manager->require_enabled();
$manager->require_manage();

$context = context_course::instance($courseid);
$url = new moodle_url('/blocks/stash/trade_edit.php', array('courseid' => $courseid, 'id' => $id));

$trade = $id ? $manager->get_trade($id) : null;

$tradename = $trade ? format_string($trade->get_name(), true, ['context' => $context]) : '';
$pagetitle = $trade ? get_string('edittrade', 'block_stash', $tradename) : get_string('addtrade', 'block_stash');
list($title, $subtitle, $returnurl) = \block_stash\page_helper::setup_for_trade($url, $manager, $trade, $pagetitle);

$customdata = [
    'persistent' => $trade,
    'stash' => $manager->get_stash(),
    'manager' => $manager,
];

$renderer = $PAGE->get_renderer('block_stash');
$form = new \block_stash\form\trade($url->out(false), $customdata);


if ($data = $form->get_data()) {

    $saveandnext = !empty($data->saveandnext);
    unset($data->saveandnext);

    $savedtrade = $manager->create_or_update_trade($data);

    if ($saveandnext) {
        redirect(new moodle_url('/blocks/stash/tradeitem.php', ['tradeid' => $savedtrade->get_id(),
            'courseid' => $manager->get_courseid()]));
    }
    redirect($returnurl);

} else if ($form->is_cancelled()) {
    redirect($returnurl);
}

echo $OUTPUT->header();
echo $OUTPUT->heading($title, 2);
echo $renderer->navigation($manager, 'trade');
if (!empty($subtitle)) {
    echo $OUTPUT->heading($subtitle, 3);
}
$form->display();

echo $OUTPUT->footer();