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507 lines
20 KiB
507 lines
20 KiB
2 years ago
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<?php
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// This file is part of 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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defined('MOODLE_INTERNAL') OR die('not allowed');
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require_once($CFG->dirroot.'/mod/feedback/item/feedback_item_class.php');
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define('FEEDBACK_MULTICHOICE_TYPE_SEP', '>>>>>');
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define('FEEDBACK_MULTICHOICE_LINE_SEP', '|');
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define('FEEDBACK_MULTICHOICE_ADJUST_SEP', '<<<<<');
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define('FEEDBACK_MULTICHOICE_IGNOREEMPTY', 'i');
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define('FEEDBACK_MULTICHOICE_HIDENOSELECT', 'h');
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class feedback_item_multichoice extends feedback_item_base {
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protected $type = "multichoice";
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public function build_editform($item, $feedback, $cm) {
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global $DB, $CFG;
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require_once('multichoice_form.php');
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//get the lastposition number of the feedback_items
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$position = $item->position;
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$lastposition = $DB->count_records('feedback_item', array('feedback'=>$feedback->id));
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if ($position == -1) {
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$i_formselect_last = $lastposition + 1;
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$i_formselect_value = $lastposition + 1;
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$item->position = $lastposition + 1;
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} else {
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$i_formselect_last = $lastposition;
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$i_formselect_value = $item->position;
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}
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//the elements for position dropdownlist
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$positionlist = array_slice(range(0, $i_formselect_last), 1, $i_formselect_last, true);
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$item->presentation = empty($item->presentation) ? '' : $item->presentation;
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$info = $this->get_info($item);
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$item->ignoreempty = $this->ignoreempty($item);
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$item->hidenoselect = $this->hidenoselect($item);
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//all items for dependitem
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$feedbackitems = feedback_get_depend_candidates_for_item($feedback, $item);
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$commonparams = array('cmid'=>$cm->id,
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'id'=>isset($item->id) ? $item->id : null,
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'typ'=>$item->typ,
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'items'=>$feedbackitems,
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'feedback'=>$feedback->id);
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//build the form
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$customdata = array('item' => $item,
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'common' => $commonparams,
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'positionlist' => $positionlist,
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'position' => $position,
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'info' => $info);
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$this->item_form = new feedback_multichoice_form('edit_item.php', $customdata);
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}
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public function save_item() {
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global $DB;
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if (!$this->get_data()) {
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return false;
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}
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$item = $this->item;
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if (isset($item->clone_item) AND $item->clone_item) {
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$item->id = ''; //to clone this item
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$item->position++;
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}
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$this->set_ignoreempty($item, $item->ignoreempty);
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$this->set_hidenoselect($item, $item->hidenoselect);
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$item->hasvalue = $this->get_hasvalue();
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if (!$item->id) {
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$item->id = $DB->insert_record('feedback_item', $item);
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} else {
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$DB->update_record('feedback_item', $item);
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}
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return $DB->get_record('feedback_item', array('id'=>$item->id));
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}
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//gets an array with three values(typ, name, XXX)
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//XXX is an object with answertext, answercount and quotient
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/**
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* Helper function for collected data, both for analysis page and export to excel
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*
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* @param stdClass $item the db-object from feedback_item
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* @param int $groupid
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* @param int $courseid
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* @return array
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*/
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protected function get_analysed($item, $groupid = false, $courseid = false) {
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$info = $this->get_info($item);
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$analysed_item = array();
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$analysed_item[] = $item->typ;
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$analysed_item[] = format_string($item->name);
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//get the possible answers
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$answers = null;
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$answers = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation);
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if (!is_array($answers)) {
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return null;
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}
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//get the values
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$values = feedback_get_group_values($item, $groupid, $courseid, $this->ignoreempty($item));
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if (!$values) {
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return null;
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}
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//get answertext, answercount and quotient for each answer
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$analysed_answer = array();
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if ($info->subtype == 'c') {
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$sizeofanswers = count($answers);
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for ($i = 1; $i <= $sizeofanswers; $i++) {
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$ans = new stdClass();
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$ans->answertext = $answers[$i-1];
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$ans->answercount = 0;
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foreach ($values as $value) {
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//ist die Antwort gleich dem index der Antworten + 1?
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$vallist = explode(FEEDBACK_MULTICHOICE_LINE_SEP, $value->value);
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foreach ($vallist as $val) {
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if ($val == $i) {
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$ans->answercount++;
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}
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}
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}
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$ans->quotient = $ans->answercount / count($values);
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$analysed_answer[] = $ans;
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}
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} else {
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$sizeofanswers = count($answers);
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for ($i = 1; $i <= $sizeofanswers; $i++) {
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$ans = new stdClass();
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$ans->answertext = $answers[$i-1];
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$ans->answercount = 0;
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foreach ($values as $value) {
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//ist die Antwort gleich dem index der Antworten + 1?
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if ($value->value == $i) {
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$ans->answercount++;
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}
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}
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$ans->quotient = $ans->answercount / count($values);
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$analysed_answer[] = $ans;
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}
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}
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$analysed_item[] = $analysed_answer;
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return $analysed_item;
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}
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public function get_printval($item, $value) {
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$info = $this->get_info($item);
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$printval = '';
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if (!isset($value->value)) {
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return $printval;
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}
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$presentation = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation);
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if ($info->subtype == 'c') {
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$vallist = array_values(explode (FEEDBACK_MULTICHOICE_LINE_SEP, $value->value));
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$sizeofvallist = count($vallist);
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$sizeofpresentation = count($presentation);
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for ($i = 0; $i < $sizeofvallist; $i++) {
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for ($k = 0; $k < $sizeofpresentation; $k++) {
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if ($vallist[$i] == ($k + 1)) {//Die Werte beginnen bei 1, das Array aber mit 0
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$printval .= trim(format_string($presentation[$k])) . chr(10);
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break;
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}
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}
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}
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} else {
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$index = 1;
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foreach ($presentation as $pres) {
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if ($value->value == $index) {
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$printval = format_string($pres);
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break;
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}
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$index++;
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}
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}
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return $printval;
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}
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public function print_analysed($item, $itemnr = '', $groupid = false, $courseid = false) {
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global $OUTPUT;
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$analysed_item = $this->get_analysed($item, $groupid, $courseid);
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if ($analysed_item) {
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$itemname = $analysed_item[1];
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echo "<table class=\"analysis itemtype_{$item->typ}\">";
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echo '<tr><th colspan="2" align="left">';
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echo $itemnr . ' ';
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if (strval($item->label) !== '') {
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echo '('. format_string($item->label).') ';
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}
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echo format_string($itemname);
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echo '</th></tr>';
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echo "</table>";
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$analysed_vals = $analysed_item[2];
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$count = 0;
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$data = [];
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foreach ($analysed_vals as $val) {
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$quotient = format_float($val->quotient * 100, 2);
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$strquotient = '';
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if ($val->quotient > 0) {
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$strquotient = ' ('. $quotient . ' %)';
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}
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$answertext = format_text(trim($val->answertext), FORMAT_HTML,
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array('noclean' => true, 'para' => false));
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$data['labels'][$count] = $answertext;
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$data['series'][$count] = $val->answercount;
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$data['series_labels'][$count] = $val->answercount . $strquotient;
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$count++;
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}
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$chart = new \core\chart_bar();
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$chart->set_horizontal(true);
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$series = new \core\chart_series(format_string(get_string("responses", "feedback")), $data['series']);
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$series->set_labels($data['series_labels']);
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$chart->add_series($series);
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$chart->set_labels($data['labels']);
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echo $OUTPUT->render($chart);
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}
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}
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public function excelprint_item(&$worksheet, $row_offset,
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$xls_formats, $item,
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$groupid, $courseid = false) {
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$analysed_item = $this->get_analysed($item, $groupid, $courseid);
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$data = $analysed_item[2];
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//frage schreiben
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$worksheet->write_string($row_offset, 0, $item->label, $xls_formats->head2);
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$worksheet->write_string($row_offset, 1, $analysed_item[1], $xls_formats->head2);
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if (is_array($data)) {
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$sizeofdata = count($data);
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for ($i = 0; $i < $sizeofdata; $i++) {
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$analysed_data = $data[$i];
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$worksheet->write_string($row_offset,
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$i + 2,
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trim($analysed_data->answertext),
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$xls_formats->head2);
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$worksheet->write_number($row_offset + 1,
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$i + 2,
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$analysed_data->answercount,
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$xls_formats->default);
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$worksheet->write_number($row_offset + 2,
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$i + 2,
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$analysed_data->quotient,
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$xls_formats->procent);
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}
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}
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$row_offset += 3;
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return $row_offset;
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}
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/**
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* Options for the multichoice element
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* @param stdClass $item
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* @return array
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*/
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protected function get_options($item) {
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$info = $this->get_info($item);
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$presentation = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation);
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$options = array();
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foreach ($presentation as $idx => $optiontext) {
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$options[$idx + 1] = format_text($optiontext, FORMAT_HTML, array('noclean' => true, 'para' => false));
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}
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if ($info->subtype === 'r' && !$this->hidenoselect($item)) {
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$options = array(0 => get_string('not_selected', 'feedback')) + $options;
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}
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return $options;
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}
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/**
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* Adds an input element to the complete form
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*
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* This element has many options - it can be displayed as group or radio elements,
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* group of checkboxes or a dropdown list.
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*
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* @param stdClass $item
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* @param mod_feedback_complete_form $form
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*/
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public function complete_form_element($item, $form) {
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$info = $this->get_info($item);
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$name = $this->get_display_name($item);
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$class = 'multichoice-' . $info->subtype;
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$inputname = $item->typ . '_' . $item->id;
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$options = $this->get_options($item);
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$separator = !empty($info->horizontal) ? ' ' : '<br>';
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$tmpvalue = $form->get_item_value($item) ?? 0; // Used for element defaults, so must be a valid value (not null).
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// Subtypes:
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// r = radio
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// c = checkbox
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// d = dropdown.
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if ($info->subtype === 'd' || ($info->subtype === 'r' && $form->is_frozen())) {
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// Display as a dropdown in the complete form or a single value in the response view.
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$element = $form->add_form_element($item,
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['select', $inputname, $name, array(0 => '') + $options, array('class' => $class)],
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false, false);
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$form->set_element_default($inputname, $tmpvalue);
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$form->set_element_type($inputname, PARAM_INT);
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} else if ($info->subtype === 'c' && $form->is_frozen()) {
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// Display list of checkbox values in the response view.
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$objs = [];
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foreach (explode(FEEDBACK_MULTICHOICE_LINE_SEP, $form->get_item_value($item)) as $v) {
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$objs[] = ['static', $inputname."[$v]", '', isset($options[$v]) ? $options[$v] : ''];
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}
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$element = $form->add_form_group_element($item, 'group_'.$inputname, $name, $objs, $separator, $class);
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} else {
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// Display group or radio or checkbox elements.
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$class .= ' multichoice-' . ($info->horizontal ? 'horizontal' : 'vertical');
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$objs = [];
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if ($info->subtype === 'c') {
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// Checkboxes.
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$objs[] = ['hidden', $inputname.'[0]', 0];
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$form->set_element_type($inputname.'[0]', PARAM_INT);
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foreach ($options as $idx => $label) {
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$objs[] = ['advcheckbox', $inputname.'['.$idx.']', '', $label, null, array(0, $idx)];
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||
|
|
$form->set_element_type($inputname.'['.$idx.']', PARAM_INT);
|
||
|
|
}
|
||
|
|
// Span to hold the element id. The id is used for drag and drop reordering.
|
||
|
|
$objs[] = ['static', '', '', html_writer::span('', '', ['id' => 'feedback_item_' . $item->id])];
|
||
|
|
$element = $form->add_form_group_element($item, 'group_'.$inputname, $name, $objs, $separator, $class);
|
||
|
|
if ($tmpvalue) {
|
||
|
|
foreach (explode(FEEDBACK_MULTICHOICE_LINE_SEP, $tmpvalue) as $v) {
|
||
|
|
$form->set_element_default($inputname.'['.$v.']', $v);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// Radio.
|
||
|
|
if (!array_key_exists(0, $options)) {
|
||
|
|
// Always add a hidden element to the group to guarantee we get a value in the submit data.
|
||
|
|
$objs[] = ['hidden', $inputname, 0];
|
||
|
|
}
|
||
|
|
foreach ($options as $idx => $label) {
|
||
|
|
$objs[] = ['radio', $inputname, '', $label, $idx];
|
||
|
|
}
|
||
|
|
// Span to hold the element id. The id is used for drag and drop reordering.
|
||
|
|
$objs[] = ['static', '', '', html_writer::span('', '', ['id' => 'feedback_item_' . $item->id])];
|
||
|
|
$element = $form->add_form_group_element($item, 'group_'.$inputname, $name, $objs, $separator, $class);
|
||
|
|
$form->set_element_default($inputname, $tmpvalue);
|
||
|
|
$form->set_element_type($inputname, PARAM_INT);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Process 'required' rule.
|
||
|
|
if ($item->required) {
|
||
|
|
$elementname = $element->getName();
|
||
|
|
$form->add_validation_rule(function($values) use ($elementname, $item) {
|
||
|
|
$inputname = $item->typ . '_' . $item->id;
|
||
|
|
return empty($values[$inputname]) || (is_array($values[$inputname]) && !array_filter($values[$inputname])) ?
|
||
|
|
array($elementname => get_string('required')) : true;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepares value that user put in the form for storing in DB
|
||
|
|
* @param array $value
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function create_value($value) {
|
||
|
|
// Could be an array (multichoice checkbox) or single value (multichoice radio or dropdown).
|
||
|
|
$value = is_array($value) ? $value : [$value];
|
||
|
|
|
||
|
|
$value = array_unique(array_filter($value));
|
||
|
|
return join(FEEDBACK_MULTICHOICE_LINE_SEP, $value);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Compares the dbvalue with the dependvalue
|
||
|
|
*
|
||
|
|
* @param stdClass $item
|
||
|
|
* @param string $dbvalue is the value input by user in the format as it is stored in the db
|
||
|
|
* @param string $dependvalue is the value that it needs to be compared against
|
||
|
|
*/
|
||
|
|
public function compare_value($item, $dbvalue, $dependvalue) {
|
||
|
|
|
||
|
|
if (is_array($dbvalue)) {
|
||
|
|
$dbvalues = $dbvalue;
|
||
|
|
} else {
|
||
|
|
$dbvalues = explode(FEEDBACK_MULTICHOICE_LINE_SEP, $dbvalue);
|
||
|
|
}
|
||
|
|
|
||
|
|
$info = $this->get_info($item);
|
||
|
|
$presentation = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation);
|
||
|
|
$index = 1;
|
||
|
|
foreach ($presentation as $pres) {
|
||
|
|
foreach ($dbvalues as $dbval) {
|
||
|
|
if ($dbval == $index AND trim($pres) == $dependvalue) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$index++;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function get_info($item) {
|
||
|
|
$presentation = empty($item->presentation) ? '' : $item->presentation;
|
||
|
|
|
||
|
|
$info = new stdClass();
|
||
|
|
//check the subtype of the multichoice
|
||
|
|
//it can be check(c), radio(r) or dropdown(d)
|
||
|
|
$info->subtype = '';
|
||
|
|
$info->presentation = '';
|
||
|
|
$info->horizontal = false;
|
||
|
|
|
||
|
|
$parts = explode(FEEDBACK_MULTICHOICE_TYPE_SEP, $item->presentation);
|
||
|
|
@list($info->subtype, $info->presentation) = $parts;
|
||
|
|
if (!isset($info->subtype)) {
|
||
|
|
$info->subtype = 'r';
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($info->subtype != 'd') {
|
||
|
|
$parts = explode(FEEDBACK_MULTICHOICE_ADJUST_SEP, $info->presentation);
|
||
|
|
@list($info->presentation, $info->horizontal) = $parts;
|
||
|
|
if (isset($info->horizontal) AND $info->horizontal == 1) {
|
||
|
|
$info->horizontal = true;
|
||
|
|
} else {
|
||
|
|
$info->horizontal = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $info;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function set_ignoreempty($item, $ignoreempty=true) {
|
||
|
|
$item->options = str_replace(FEEDBACK_MULTICHOICE_IGNOREEMPTY, '', $item->options);
|
||
|
|
if ($ignoreempty) {
|
||
|
|
$item->options .= FEEDBACK_MULTICHOICE_IGNOREEMPTY;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function ignoreempty($item) {
|
||
|
|
if (strstr($item->options, FEEDBACK_MULTICHOICE_IGNOREEMPTY)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function set_hidenoselect($item, $hidenoselect=true) {
|
||
|
|
$item->options = str_replace(FEEDBACK_MULTICHOICE_HIDENOSELECT, '', $item->options);
|
||
|
|
if ($hidenoselect) {
|
||
|
|
$item->options .= FEEDBACK_MULTICHOICE_HIDENOSELECT;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public function hidenoselect($item) {
|
||
|
|
if (strstr($item->options, FEEDBACK_MULTICHOICE_HIDENOSELECT)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the analysis data ready for external functions.
|
||
|
|
*
|
||
|
|
* @param stdClass $item the item (question) information
|
||
|
|
* @param int $groupid the group id to filter data (optional)
|
||
|
|
* @param int $courseid the course id (optional)
|
||
|
|
* @return array an array of data with non scalar types json encoded
|
||
|
|
* @since Moodle 3.3
|
||
|
|
*/
|
||
|
|
public function get_analysed_for_external($item, $groupid = false, $courseid = false) {
|
||
|
|
|
||
|
|
$externaldata = array();
|
||
|
|
$data = $this->get_analysed($item, $groupid, $courseid);
|
||
|
|
|
||
|
|
if (!empty($data[2]) && is_array($data[2])) {
|
||
|
|
foreach ($data[2] as $d) {
|
||
|
|
$externaldata[] = json_encode($d);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $externaldata;
|
||
|
|
}
|
||
|
|
}
|