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/>.

namespace mod_quiz\external;

use coding_exception;

use core_external\external_api;

use core_external\external_description;

use core_external\external_function_parameters;

use core_external\external_multiple_structure;

use core_external\external_single_structure;

use core_external\external_value;

use mod_quiz\quiz_attempt;

use mod_quiz\quiz_settings;

use moodle_exception;

use stdClass;

/**

 * For a quiz with no grade items yet, create a grade item for each section.

 *

 * And, assign the questions in each section to the corresponding grade item.

 *

 * The user must have the 'mod/quiz:manage' capability for the quiz.

 *

 * @package   mod_quiz

 * @copyright 2024 The Open University

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

 */

class create_grade_item_per_section extends external_api {

    /**

     * Declare the method parameters.

     *

     * @return external_function_parameters

     */

    public static function execute_parameters(): external_function_parameters {

        return new external_function_parameters([

            'quizid' => new external_value(PARAM_INT, 'The quiz to update slots for.'),

        ]);

    }

    /**

     * For a quiz with no grade items yet, create a grade item for each section.

     *

     * And, assign the questions in each section to the corresponding grade item.

     *

     * The user must have the 'mod/quiz:manage' capability for the quiz.

     *

     * @param int $quizid the id of the quiz to setup grade items for.

     */

    public static function execute(int $quizid): void {

        global $DB;

        [

            'quizid' => $quizid,

        ] = self::validate_parameters(self::execute_parameters(), [

            'quizid' => $quizid,

        ]);

        // Check the request is valid.

        $quizobj = quiz_settings::create($quizid);

        require_capability('mod/quiz:manage', $quizobj->get_context());

        self::validate_context($quizobj->get_context());

        $structure = $quizobj->get_structure();

        if ($structure->get_grade_items()) {

            throw new coding_exception('Cannot use create_grade_item_per_section for a quiz ' .

                'that already has grade items.');

        }

        $transaction = $DB->start_delegated_transaction();

        $gradeitemsids = [];

        foreach ($structure->get_sections() as $section) {

            // Only create a grade item for sections that contain at least one real question (not description).

            $hasrealquestion = false;

            foreach ($structure->get_slots_in_section($section->id) as $slot) {

                $hasrealquestion = $hasrealquestion || $structure->is_real_question($slot);

            }

            if (!$hasrealquestion) {

                continue;

            }

            // Grade item required. Create it.

            $gradeitem = new stdClass();

            $gradeitem->quizid = $quizid;

            $gradeitem->name = $section->heading;

            $structure->create_grade_item($gradeitem);

            $gradeitemsids[$section->id] = $gradeitem->id;

        }

        foreach ($structure->get_slots() as $slot) {

            if ($structure->is_real_question($slot->slot)) {

                $structure->update_slot_grade_item($slot, $gradeitemsids[$slot->section->id]);

            }

        }

        $transaction->allow_commit();

    }

    /**

     * Define the webservice response.

     *

     * @return external_description|null always null.

     */

    public static function execute_returns(): ?external_description {

        return null;

    }

}