732 lines
25 KiB
PHP
732 lines
25 KiB
PHP
<?php
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// This file is part of the customcert module for Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* This file contains the customcert date range element.
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*
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* @package customcertelement_daterange
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* @copyright 2018 Dmitrii Metelkin <dmitriim@catalyst-au.net>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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namespace customcertelement_daterange;
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use \mod_customcert\element_helper;
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defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
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require_once($CFG->dirroot . '/lib/grade/constants.php');
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/**
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* The customcert date range element.
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*
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* @package customcertelement_daterange
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* @copyright 2018 Dmitrii Metelkin <dmitriim@catalyst-au.net>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class element extends \mod_customcert\element {
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/**
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* Max recurring period in seconds.
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*/
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const MAX_RECURRING_PERIOD = 31556926; // 12 months.
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/**
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* Current year placeholder string.
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*/
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const CURRENT_YEAR_PLACEHOLDER = '{{current_year}}';
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/**
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* First year in a date range placeholder string.
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*/
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const RANGE_FIRST_YEAR_PLACEHOLDER = '{{range_first_year}}';
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/**
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* Last year in a date range placeholder string.
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*/
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const RANGE_LAST_YEAR_PLACEHOLDER = '{{range_last_year}}';
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/**
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* First year in a date range placeholder string.
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*/
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const RECUR_RANGE_FIRST_YEAR_PLACEHOLDER = '{{recurring_range_first_year}}';
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/**
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* Last year in a date range placeholder string.
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*/
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const RECUR_RANGE_LAST_YEAR_PLACEHOLDER = '{{recurring_range_last_year}}';
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/**
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* A year in the user's date.
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*/
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const DATE_YEAR_PLACEHOLDER = '{{date_year}}';
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/**
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* Date - Issue
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*/
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const DATE_ISSUE = -1;
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/**
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* Date - Completion
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*/
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const DATE_COMPLETION = -2;
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/**
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* Date - Course start
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*/
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const DATE_COURSE_START = -3;
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/**
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* Date - Course end
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*/
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const DATE_COURSE_END = -4;
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/**
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* Date - Course grade date
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*/
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const DATE_COURSE_GRADE = -5;
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/**
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* Date - Course current date
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*/
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const DATE_CURRENT_DATE = -6;
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/**
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* This function renders the form elements when adding a customcert element.
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*
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* @param \MoodleQuickForm $mform the edit form instance
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*/
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public function render_form_elements($mform) {
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global $COURSE;
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// Get the possible date options.
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$dateoptions = array();
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$dateoptions[self::DATE_ISSUE] = get_string('issueddate', 'customcertelement_daterange');
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$dateoptions[self::DATE_CURRENT_DATE] = get_string('currentdate', 'customcertelement_daterange');
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$dateoptions[self::DATE_COMPLETION] = get_string('completiondate', 'customcertelement_daterange');
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$dateoptions[self::DATE_COURSE_START] = get_string('coursestartdate', 'customcertelement_daterange');
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$dateoptions[self::DATE_COURSE_END] = get_string('courseenddate', 'customcertelement_daterange');
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$dateoptions[self::DATE_COURSE_GRADE] = get_string('coursegradedate', 'customcertelement_daterange');
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$dateoptions = $dateoptions + element_helper::get_grade_items($COURSE);
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$mform->addElement('select', 'dateitem', get_string('dateitem', 'customcertelement_daterange'), $dateoptions);
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$mform->addHelpButton('dateitem', 'dateitem', 'customcertelement_daterange');
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parent::render_form_elements($mform);
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$mform->addElement('header', 'dateranges', get_string('dateranges', 'customcertelement_daterange'));
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$mform->addElement('static', 'help', '', get_string('help', 'customcertelement_daterange'));
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$mform->addElement('static', 'placeholders', '', get_string('placeholders', 'customcertelement_daterange'));
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$mform->addElement('text', 'fallbackstring', get_string('fallbackstring', 'customcertelement_daterange'));
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$mform->addHelpButton('fallbackstring', 'fallbackstring', 'customcertelement_daterange');
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$mform->setType('fallbackstring', PARAM_NOTAGS);
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if (empty($this->get_decoded_data()->dateranges)) {
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$repeats = 1;
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} else {
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$repeats = count($this->get_decoded_data()->dateranges);
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}
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$ranges = [];
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$ranges[] = $mform->createElement('html', '<hr>');
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$ranges[] = $mform->createElement(
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'date_selector',
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'startdate',
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get_string('start', 'customcertelement_daterange')
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);
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$ranges[] = $mform->createElement(
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'date_selector',
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'enddate',
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get_string('end', 'customcertelement_daterange')
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);
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$ranges[] = $mform->createElement(
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'checkbox',
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'recurring',
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get_string('recurring', 'customcertelement_daterange')
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);
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$ranges[] = $mform->createElement(
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'text',
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'datestring',
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get_string('datestring', 'customcertelement_daterange'),
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['class' => 'datestring']
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);
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$ranges[] = $mform->createElement(
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'advcheckbox',
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'rangedelete',
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get_string('setdeleted', 'customcertelement_daterange'),
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'',
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[],
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[0, 1]
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);
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$rangeoptions = array();
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$rangeoptions['startdate']['type'] = PARAM_INT;
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$rangeoptions['enddate']['type'] = PARAM_INT;
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$rangeoptions['recurring']['type'] = PARAM_INT;
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$rangeoptions['recurring']['helpbutton'] = ['recurring', 'customcertelement_daterange'];
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$rangeoptions['datestring']['type'] = PARAM_NOTAGS;
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$rangeoptions['rangedelete']['type'] = PARAM_BOOL;
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$addstring = get_string('addrange', 'customcertelement_daterange');
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$this->get_edit_element_form()->repeat_elements($ranges, $repeats, $rangeoptions, 'repeats', 'add', 1, $addstring, true);
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}
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/**
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* A helper function to build consistent form element name.
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*
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* @param string $name
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* @param string $num
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*
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* @return string
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*/
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protected function build_element_name($name, $num) {
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return $name . '[' . $num . ']';
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}
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/**
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* Get decoded data stored in DB.
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*
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* @return \stdClass
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*/
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protected function get_decoded_data() {
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return json_decode($this->get_data());
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}
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/**
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* Sets the data on the form when editing an element.
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*
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* @param \MoodleQuickForm $mform the edit form instance
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*/
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public function definition_after_data($mform) {
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if (!empty($this->get_data()) && !$mform->isSubmitted()) {
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$element = $mform->getElement('dateitem');
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$element->setValue($this->get_decoded_data()->dateitem);
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$element = $mform->getElement('fallbackstring');
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$element->setValue($this->get_decoded_data()->fallbackstring);
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foreach ($this->get_decoded_data()->dateranges as $key => $range) {
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$mform->setDefault($this->build_element_name('startdate', $key), $range->startdate);
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$mform->setDefault($this->build_element_name('enddate', $key), $range->enddate);
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$mform->setDefault($this->build_element_name('datestring', $key), $range->datestring);
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$mform->setDefault($this->build_element_name('recurring', $key), $range->recurring);
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}
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}
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parent::definition_after_data($mform);
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}
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/**
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* Performs validation on the element values.
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*
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* @param array $data the submitted data
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* @param array $files the submitted files
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* @return array the validation errors
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*/
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public function validate_form_elements($data, $files) {
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$errors = parent::validate_form_elements($data, $files);
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// Check if at least one range is set.
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$error = get_string('error:atleastone', 'customcertelement_daterange');
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for ($i = 0; $i < $data['repeats']; $i++) {
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if (empty($data['rangedelete'][$i])) {
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$error = '';
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}
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}
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if (!empty($error)) {
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$errors['help'] = $error;
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}
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// Check that datestring is set dataranges what aren't need to be deleted.
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for ($i = 0; $i < $data['repeats']; $i++) {
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// Skip elements that needs to be deleted.
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if (!empty($data['rangedelete'][$i])) {
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continue;
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}
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if (empty($data['datestring'][$i])) {
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$name = $this->build_element_name('datestring', $i);
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$errors[$name] = get_string('error:datestring', 'customcertelement_daterange');
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}
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// Check that end date is correctly set.
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if ( $data['startdate'][$i] >= $data['enddate'][$i] ) {
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$errors[$this->build_element_name('enddate', $i)] = get_string('error:enddate', 'customcertelement_daterange');
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}
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$rangeperiod = $data['enddate'][$i] - $data['startdate'][$i];
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// Check that recurring dateranges are not longer than 12 months.
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if (!empty($data['recurring'][$i]) && $rangeperiod >= self::MAX_RECURRING_PERIOD ) {
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$errors[$this->build_element_name('enddate', $i)] = get_string('error:recurring', 'customcertelement_daterange');
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}
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}
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return $errors;
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}
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/**
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* This will handle how form data will be saved into the data column in the
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* customcert_elements table.
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*
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* @param \stdClass $data the form data
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* @return string the json encoded array
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*/
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public function save_unique_data($data) {
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$arrtostore = array(
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'dateitem' => $data->dateitem,
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'fallbackstring' => $data->fallbackstring,
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'dateranges' => [],
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);
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for ($i = 0; $i < $data->repeats; $i++) {
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if (empty($data->rangedelete[$i])) {
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$arrtostore['dateranges'][] = [
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'startdate' => $data->startdate[$i],
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'enddate' => $data->enddate[$i],
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'datestring' => $data->datestring[$i],
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'recurring' => !empty($data->recurring[$i]),
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];
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}
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}
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// Encode these variables before saving into the DB.
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return json_encode($arrtostore);
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}
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/**
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* Handles rendering the element on the pdf.
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*
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* @param \pdf $pdf the pdf object
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* @param bool $preview true if it is a preview, false otherwise
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* @param \stdClass $user the user we are rendering this for
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*/
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public function render($pdf, $preview, $user) {
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global $DB;
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// If there is no element data, we have nothing to display.
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if (empty($this->get_data())) {
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return;
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}
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$courseid = element_helper::get_courseid($this->id);
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$dateitem = $this->get_decoded_data()->dateitem;
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// If we are previewing this certificate then just show a demonstration date.
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if ($preview) {
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$date = time();
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} else {
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// Get the page.
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$page = $DB->get_record('customcert_pages', array('id' => $this->get_pageid()), '*', MUST_EXIST);
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// Get the customcert this page belongs to.
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$customcert = $DB->get_record('customcert', array('templateid' => $page->templateid), '*', MUST_EXIST);
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// Now we can get the issue for this user.
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$issue = $DB->get_record('customcert_issues', array('userid' => $user->id, 'customcertid' => $customcert->id),
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'*', MUST_EXIST);
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switch ($dateitem) {
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case self::DATE_ISSUE:
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$date = $issue->timecreated;
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break;
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case self::DATE_CURRENT_DATE:
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$date = time();
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break;
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case self::DATE_COMPLETION:
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// Get the last completion date.
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$sql = "SELECT MAX(c.timecompleted) as timecompleted
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FROM {course_completions} c
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WHERE c.userid = :userid
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AND c.course = :courseid";
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if ($timecompleted = $DB->get_record_sql($sql, array('userid' => $issue->userid, 'courseid' => $courseid))) {
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if (!empty($timecompleted->timecompleted)) {
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$date = $timecompleted->timecompleted;
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}
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}
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break;
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case self::DATE_COURSE_START:
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$date = $DB->get_field('course', 'startdate', array('id' => $courseid));
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break;
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case self::DATE_COURSE_END:
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$date = $DB->get_field('course', 'enddate', array('id' => $courseid));
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break;
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case self::DATE_COURSE_GRADE:
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$grade = element_helper::get_course_grade_info(
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$courseid,
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GRADE_DISPLAY_TYPE_DEFAULT, $user->id
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);
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if ($grade && !empty($grade->get_dategraded())) {
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$date = $grade->get_dategraded();
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}
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break;
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default:
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if (strpos($dateitem, 'gradeitem:') === 0) {
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$gradeitemid = substr($dateitem, 10);
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$grade = element_helper::get_grade_item_info(
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$gradeitemid,
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$dateitem,
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$user->id
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);
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} else {
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$grade = element_helper::get_mod_grade_info(
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$dateitem,
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GRADE_DISPLAY_TYPE_DEFAULT,
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$user->id
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);
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}
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if ($grade && !empty($grade->get_dategraded())) {
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$date = $grade->get_dategraded();
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}
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break;
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}
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}
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// Ensure that a date has been set.
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if (!empty($date)) {
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element_helper::render_content($pdf, $this, $this->get_daterange_string($date));
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}
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}
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/**
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* Get daterange string.
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*
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* @param int $date Unix stamp date.
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*
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* @return string
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*/
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protected function get_daterange_string($date) {
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$matchedrange = null;
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$outputstring = '';
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$formatdata = [];
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$formatdata['date'] = $date;
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foreach ($this->get_decoded_data()->dateranges as $key => $range) {
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if ($this->is_recurring_range($range)) {
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if ($matchedrange = $this->get_matched_recurring_range($date, $range)) {
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$outputstring = $matchedrange->datestring;
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$formatdata['range'] = $range;
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$formatdata['recurringrange'] = $matchedrange;
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break;
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}
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} else {
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if ($this->is_date_in_range($date, $range)) {
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$outputstring = $range->datestring;
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$formatdata['range'] = $range;
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break;
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}
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}
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}
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if (empty($outputstring) && !empty($this->get_decoded_data()->fallbackstring)) {
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$outputstring = $this->get_decoded_data()->fallbackstring;
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}
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return $this->format_date_string($outputstring, $formatdata);
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}
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/**
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* Returns whether or not a range is recurring.
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*
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* @param \stdClass $range Range object.
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*
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* @return bool
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*/
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protected function is_recurring_range(\stdClass $range) {
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return !empty($range->recurring);
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}
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/**
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* Check if the provided date is in the date range.
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*
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* @param int $date Unix timestamp date to check.
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* @param \stdClass $range Range object.
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*
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* @return bool
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*/
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protected function is_date_in_range($date, \stdClass $range) {
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return ($date >= $range->startdate && $date <= $range->enddate);
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}
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/**
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* Check if provided date is in the recurring date range.
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*
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* @param int $date Unix timestamp date to check.
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* @param \stdClass $range Range object.
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*
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* @return bool
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*/
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protected function is_date_in_recurring_range($date, \stdClass $range) {
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$intdate = $this->build_number_from_date($date);
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$intstart = $this->build_number_from_date($range->startdate);
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$intend = $this->build_number_from_date($range->enddate);
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if (!$this->has_turn_of_the_year($range)) {
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if ($intdate >= $intstart && $intdate <= $intend) {
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return true;
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}
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} else {
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if ($intdate >= $intstart && $intdate >= $intend) {
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return true;
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}
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if ($intdate <= $intstart && $intdate <= $intend) {
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return true;
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}
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}
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return false;
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}
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/**
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* Check if provided recurring range has a turn of the year.
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*
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* @param \stdClass $reccurringrange Range object.
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*
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* @return bool
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*/
|
|
protected function has_turn_of_the_year(\stdClass $reccurringrange) {
|
|
return date('Y', $reccurringrange->startdate) != date('Y', $reccurringrange->enddate);
|
|
}
|
|
|
|
/**
|
|
* Check if provided date is in the start year of the recurring range with a turn of the year.
|
|
*
|
|
* @param int $date Unix timestamp date to check.
|
|
* @param \stdClass $range Range object.
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function in_start_year($date, \stdClass $range) {
|
|
$intdate = $this->build_number_from_date($date);
|
|
$intstart = $this->build_number_from_date($range->startdate);
|
|
$intend = $this->build_number_from_date($range->enddate);
|
|
|
|
return $intdate >= $intstart && $intdate >= $intend;
|
|
}
|
|
|
|
/**
|
|
* Check if provided date is in the end year of the recurring range with a turn of the year.
|
|
*
|
|
* @param int $date Unix timestamp date to check.
|
|
* @param \stdClass $range Range object.
|
|
*
|
|
* @return bool
|
|
*/
|
|
protected function in_end_year($date, \stdClass $range) {
|
|
$intdate = $this->build_number_from_date($date);
|
|
$intstart = $this->build_number_from_date($range->startdate);
|
|
$intend = $this->build_number_from_date($range->enddate);
|
|
|
|
return $intdate <= $intstart && $intdate <= $intend;
|
|
}
|
|
|
|
/**
|
|
* Return matched recurring date range.
|
|
*
|
|
* As recurring date ranges do not depend on the year,
|
|
* we will use a date's year to build a new matched recurring date range with
|
|
* start year and end year. This is required to replace placeholders like range_first_year and range_last_year.
|
|
*
|
|
* @param int $date Unix timestamp date to check.
|
|
* @param \stdClass $range Range object.
|
|
*
|
|
* @return \stdClass || null
|
|
*/
|
|
protected function get_matched_recurring_range($date, \stdClass $range) {
|
|
if (!$this->is_date_in_recurring_range($date, $range)) {
|
|
return null;
|
|
}
|
|
|
|
$matchedrage = clone $range;
|
|
|
|
if ($this->has_turn_of_the_year($matchedrage)) {
|
|
|
|
if ($this->in_start_year($date, $matchedrage)) {
|
|
$startyear = date('Y', $date);
|
|
$endyear = $startyear + 1;
|
|
$matchedrage->startdate = strtotime(date('d.m.', $matchedrage->startdate) . $startyear);
|
|
$matchedrage->enddate = strtotime(date('d.m.', $matchedrage->enddate) . $endyear);
|
|
|
|
return $matchedrage;
|
|
}
|
|
|
|
if ($this->in_end_year($date, $matchedrage)) {
|
|
$endyear = date('Y', $date);
|
|
$startyear = $endyear - 1;
|
|
$matchedrage->startdate = strtotime(date('d.m.', $matchedrage->startdate) . $startyear);
|
|
$matchedrage->enddate = strtotime(date('d.m.', $matchedrage->enddate) . $endyear);
|
|
|
|
return $matchedrage;
|
|
}
|
|
} else {
|
|
$matchedrage->startdate = strtotime(date('d.m.', $matchedrage->startdate) . date('Y', $date));
|
|
$matchedrage->enddate = strtotime(date('d.m.', $matchedrage->enddate) . date('Y', $date));
|
|
|
|
return $matchedrage;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Build number representation of the provided date.
|
|
*
|
|
* @param int $date Unix timestamp date to check.
|
|
*
|
|
* @return int
|
|
*/
|
|
protected function build_number_from_date($date) {
|
|
return (int)date('md', $date);
|
|
}
|
|
|
|
/**
|
|
* Format date string based on different types of placeholders.
|
|
*
|
|
* @param string $datestring The date string
|
|
* @param array $formatdata A list of format data.
|
|
*
|
|
* @return string
|
|
*/
|
|
protected function format_date_string($datestring, array $formatdata) {
|
|
foreach ($this->get_placeholders() as $search => $replace) {
|
|
$datestring = str_replace($search, $replace, $datestring);
|
|
}
|
|
|
|
if (!empty($formatdata['date'])) {
|
|
foreach ($this->get_date_placeholders($formatdata['date']) as $search => $replace) {
|
|
$datestring = str_replace($search, $replace, $datestring);
|
|
}
|
|
}
|
|
|
|
if (!empty($formatdata['range'])) {
|
|
foreach ($this->get_range_placeholders($formatdata['range']) as $search => $replace) {
|
|
$datestring = str_replace($search, $replace, $datestring);
|
|
}
|
|
}
|
|
|
|
if (!empty($formatdata['recurringrange'])) {
|
|
foreach ($this->get_recurring_range_placeholders($formatdata['recurringrange']) as $search => $replace) {
|
|
$datestring = str_replace($search, $replace, $datestring);
|
|
}
|
|
}
|
|
|
|
return $datestring;
|
|
}
|
|
|
|
/**
|
|
* Return a list of placeholders to replace in date string as search => $replace pairs.
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_placeholders() {
|
|
return [
|
|
self::CURRENT_YEAR_PLACEHOLDER => date('Y', time()),
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Return a list of user's date related placeholders to replace in date string as search => $replace pairs.
|
|
|
|
* @param int $date Unix timestamp date to check.
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_date_placeholders($date) {
|
|
return [
|
|
self::DATE_YEAR_PLACEHOLDER => date('Y', $date),
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Return a list of range related placeholders to replace in date string as search => $replace pairs.
|
|
*
|
|
* @param \stdClass $range
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_range_placeholders(\stdClass $range) {
|
|
return [
|
|
self::RANGE_FIRST_YEAR_PLACEHOLDER => date('Y', $range->startdate),
|
|
self::RANGE_LAST_YEAR_PLACEHOLDER => date('Y', $range->enddate),
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Return a list of recurring range s placeholders to replace in date string as search => $replace pairs.
|
|
*
|
|
* @param \stdClass $range
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function get_recurring_range_placeholders(\stdClass $range) {
|
|
return [
|
|
self::RECUR_RANGE_FIRST_YEAR_PLACEHOLDER => date('Y', $range->startdate),
|
|
self::RECUR_RANGE_LAST_YEAR_PLACEHOLDER => date('Y', $range->enddate),
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Render the element in html.
|
|
*
|
|
* This function is used to render the element when we are using the
|
|
* drag and drop interface to position it.
|
|
*
|
|
* @return string the html
|
|
*/
|
|
public function render_html() {
|
|
// If there is no element data, we have nothing to display.
|
|
if (empty($this->get_data())) {
|
|
return;
|
|
}
|
|
|
|
return element_helper::render_html_content($this, get_string('preview', 'customcertelement_daterange', $this->get_name()));
|
|
}
|
|
|
|
/**
|
|
* This function is responsible for handling the restoration process of the element.
|
|
*
|
|
* We will want to update the course module the date element is pointing to as it will
|
|
* have changed in the course restore.
|
|
*
|
|
* @param \restore_customcert_activity_task $restore
|
|
*/
|
|
public function after_restore($restore) {
|
|
global $DB;
|
|
|
|
$data = $this->get_decoded_data();
|
|
if ($newitem = \restore_dbops::get_backup_ids_record($restore->get_restoreid(), 'course_module', $data->dateitem)) {
|
|
$data->dateitem = $newitem->newitemid;
|
|
$DB->set_field('customcert_elements', 'data', $this->save_unique_data($data), array('id' => $this->get_id()));
|
|
}
|
|
}
|
|
|
|
}
|