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✏️ Editing: profile_category_form.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_user\form;

use context;
use core_form\dynamic_form;
use moodle_url;

/**
 * Modal form to edit profile category
 *
 * @package core_user
 * @copyright 2021 Marina Glancy
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class profile_category_form extends dynamic_form {

/**
     * Form definition
     */
    protected function definition() {
        $mform = $this->_form;

$strrequired = get_string('required');

// Add some extra hidden fields.
        $mform->addElement('hidden', 'id');
        $mform->setType('id', PARAM_INT);
        $mform->addElement('hidden', 'action', 'editcategory');
        $mform->setType('action', PARAM_ALPHANUMEXT);

$mform->addElement('text', 'name', get_string('profilecategoryname', 'admin'), 'maxlength="255" size="30"');
        $mform->setType('name', PARAM_TEXT);
        $mform->addRule('name', $strrequired, 'required', null, 'client');
    }

/**
     * Perform some moodle validation.
     *
     * @param array $data
     * @param array $files
     * @return array
     */
    public function validation($data, $files) {
        global $DB;
        $errors = parent::validation($data, $files);

$duplicate = $DB->get_field('user_info_category', 'id', ['name' => $data['name']]);

// Check the name is unique.
        if (!empty($data['id'])) { // We are editing an existing record.
            $olddata = $DB->get_record('user_info_category', ['id' => $data['id']]);
            // Name has changed, new name in use, new name in use by another record.
            $dupfound = (($olddata->name !== $data['name']) && $duplicate && ($data['id'] != $duplicate));
        } else { // New profile category.
            $dupfound = $duplicate;
        }

if ($dupfound ) {
            $errors['name'] = get_string('profilecategorynamenotunique', 'admin');
        }

return $errors;
    }

/**
     * Returns context where this form is used
     *
     * @return context
     */
    protected function get_context_for_dynamic_submission(): context {
        return \context_system::instance();
    }

/**
     * Checks if current user has access to this form, otherwise throws exception
     */
    protected function check_access_for_dynamic_submission(): void {
        require_capability('moodle/site:config', $this->get_context_for_dynamic_submission());
    }

/**
     * Process the form submission, used if form was submitted via AJAX
     */
    public function process_dynamic_submission() {
        global $CFG;
        require_once($CFG->dirroot.'/user/profile/definelib.php');
        profile_save_category($this->get_data());
    }

/**
     * Load in existing data as form defaults
     */
    public function set_data_for_dynamic_submission(): void {
        global $DB;
        if ($id = $this->optional_param('id', 0, PARAM_INT)) {
            $this->set_data($DB->get_record('user_info_category', ['id' => $id], '*', MUST_EXIST));
        }
    }

/**
     * Returns url to set in $PAGE->set_url() when form is being rendered or submitted via AJAX
     *
     * @return moodle_url
     */
    protected function get_page_url_for_dynamic_submission(): moodle_url {
        $id = $this->optional_param('id', 0, PARAM_INT);
        return new moodle_url('/user/profile/index.php',
            ['action' => 'editcategory', 'id' => $id]);
    }
}

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