Proyectos de Subversion Moodle

<?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/>.

/**

 * Generate the category image url from the fetched record.

 *

 * @package    block_dash

 * @copyright  2024 bdecent gmbh <https://bdecent.de>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace block_dash\local\data_grid\field\attribute;

use block_dash\local\data_grid\field\attribute\abstract_field_attribute;

/**

 * Transform data to URL of category image.

 *

 * @package block_dash

 */

class category_image_url_attribute extends abstract_field_attribute {

    /**

     * After records are relieved from database each field has a chance to transform the data.

     * Example: Convert unix timestamp into a human readable date format

     *

     * @param \stdClass $data

     * @param \stdClass $record Entire row

     * @return mixed

     * @throws \moodle_exception

     */

    public function transform_data($data, \stdClass $record) {

        global $CFG, $OUTPUT;

        require_once("$CFG->dirroot/blocks/dash/lib.php");

        // Data is not integer then use the cc_id.

        if (!is_int($data)) {

            $data = $record->cc_id ?? 0;

        }

        $files = $this->get_category_files();

        if (!isset($files[$data]) && !isset($files[0])) {

            return $OUTPUT->image_url('courses', 'block_myoverview');

        }

        // Verify the category images are added for the category or the fallback image is uploaded then use that.

        if (isset($files[$data]) || isset($files[0])) {

            // Category imaage or fallback image.

            $file = $files[$data] ?? $files[0];

            // Generate the URL.

            $fileurl = \moodle_url::make_pluginfile_url(

                $file->get_contextid(),

                $file->get_component(),

                $file->get_filearea(),

                $file->get_itemid(),

                $file->get_filepath(),

                $file->get_filename(), false

            );

            return $fileurl->out(false);

        }

        return $data;

    }

    /**

     * Get the list of category images.

     *

     * @return array|null

     */

    public function get_category_files() {

        static $list = null;

        if ($list == null) {

            // Get the system context.

            $systemcontext = \context_system::instance();

            // File storage.

            $fs = get_file_storage();

            // Get all files from category image filearea.

            $files = $fs->get_area_files($systemcontext->id, 'block_dash', 'categoryimg', false, 'itemid', false);

            $list = [];

            // Update the files index as itemid.

            if (!empty($files)) {

                foreach ($files as $id => $file) {

                    $list[$file->get_itemid()] = $file;

                }

            }

        }

        return $list;

    }

}