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/>.

/**

 * Group data by a certain field.

 *

 * @package    block_dash

 * @copyright  2019 bdecent gmbh <https://bdecent.de>

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

 */

namespace block_dash\local\data_grid\data\strategy;

use block_dash\local\data_grid\data\data_collection;

use block_dash\local\data_grid\data\data_collection_interface;

use block_dash\local\data_grid\data\field;

use block_dash\local\dash_framework\structure\field_interface;

/**

 * Group data by a certain field.

 *

 * @package block_dash

 */

class grouped_strategy implements data_strategy_interface {

    /**

     * @var field_interface

     */

    private $groupbyfielddefinition;

    /**

     * @var field_interface

     */

    private $grouplabelfielddefinition;

    /**

     * Create new grouped strategy.

     *

     * @param field_interface $groupbyfielddefinition

     * @param field_interface $grouplabelfielddefinition

     */

    public function __construct(field_interface $groupbyfielddefinition,

                                field_interface $grouplabelfielddefinition) {

        $this->groupbyfielddefinition = $groupbyfielddefinition;

        $this->grouplabelfielddefinition = $grouplabelfielddefinition;

    }

    /**

     * Convert records.

     *

     * @param \stdClass[] $records

     * @param field_interface[] $fielddefinitions

     * @return data_collection_interface

     */

    public function convert_records_to_data_collection($records, array $fielddefinitions) {

        $griddata = block_dash_get_data_collection();

        $sections = [];

        foreach ($records as $fullrecord) {

            $record = clone $fullrecord;

            $row = block_dash_get_data_collection();

            $label = $record->{$this->grouplabelfielddefinition->get_alias()};

            if (!$groupby = $record->{$this->groupbyfielddefinition->get_alias()}) {

                continue;

            }

            if (isset($record->unique_id)) {

                unset($record->unique_id);

            }

            foreach ($fielddefinitions as $fielddefinition) {

                $alias = $fielddefinition->get_alias();

                $row->add_data(new field($alias, $fielddefinition->transform_data($record->$alias, $fullrecord),

                    $fielddefinition->get_visibility(), $fielddefinition->get_title()));

            }

            if (!isset($sections[$groupby])) {

                $sections[$groupby] = block_dash_get_data_collection();

                $sections[$groupby]->add_data(new field('groupby', $groupby, $fielddefinition->get_visibility()));

                $sections[$groupby]->add_data(new field('label', $label, $fielddefinition->get_visibility()));

            }

            $sections[$groupby]->add_child_collection('rows', $row);

        }

        foreach ($sections as $section) {

            $griddata->add_child_collection('sections', $section);

        }

        return $griddata;

    }

}