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See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?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/>.

defined('MOODLE_INTERNAL') OR die('not allowed');
require_once($CFG->dirroot.'/mod/feedback/item/feedback_item_class.php');

define('FEEDBACK_MULTICHOICE_TYPE_SEP', '>>>>>');
define('FEEDBACK_MULTICHOICE_LINE_SEP', '|');
define('FEEDBACK_MULTICHOICE_ADJUST_SEP', '<<<<<');
define('FEEDBACK_MULTICHOICE_IGNOREEMPTY', 'i');
define('FEEDBACK_MULTICHOICE_HIDENOSELECT', 'h');

class feedback_item_multichoice extends feedback_item_base {
    protected $type = "multichoice";

    public function build_editform($item, $feedback, $cm) {
        global $DB, $CFG;
        require_once('multichoice_form.php');

        //get the lastposition number of the feedback_items
        $position = $item->position;
        $lastposition = $DB->count_records('feedback_item', array('feedback'=>$feedback->id));
        if ($position == -1) {
            $i_formselect_last = $lastposition + 1;
            $i_formselect_value = $lastposition + 1;
            $item->position = $lastposition + 1;
        } else {
            $i_formselect_last = $lastposition;
            $i_formselect_value = $item->position;
        }
        //the elements for position dropdownlist
        $positionlist = array_slice(range(0, $i_formselect_last), 1, $i_formselect_last, true);

        $item->presentation = empty($item->presentation) ? '' : $item->presentation;
        $info = $this->get_info($item);

        $item->ignoreempty = $this->ignoreempty($item);
        $item->hidenoselect = $this->hidenoselect($item);

        //all items for dependitem
        $feedbackitems = feedback_get_depend_candidates_for_item($feedback, $item);
        $commonparams = array('cmid'=>$cm->id,
                             'id'=>isset($item->id) ? $item->id : null,
                             'typ'=>$item->typ,
                             'items'=>$feedbackitems,
                             'feedback'=>$feedback->id);

        //build the form
        $customdata = array('item' => $item,
                            'common' => $commonparams,
                            'positionlist' => $positionlist,
                            'position' => $position,
                            'info' => $info);

        $this->item_form = new feedback_multichoice_form('edit_item.php', $customdata);
    }

    public function save_item() {
        global $DB;

        if (!$this->get_data()) {
            return false;
        }
        $item = $this->item;

        if (isset($item->clone_item) AND $item->clone_item) {
            $item->id = ''; //to clone this item
            $item->position++;
        }

        $this->set_ignoreempty($item, $item->ignoreempty);
        $this->set_hidenoselect($item, $item->hidenoselect);

        $item->hasvalue = $this->get_hasvalue();
        if (!$item->id) {
            $item->id = $DB->insert_record('feedback_item', $item);
        } else {
            $DB->update_record('feedback_item', $item);
        }

        return $DB->get_record('feedback_item', array('id'=>$item->id));
    }


    //gets an array with three values(typ, name, XXX)
    //XXX is an object with answertext, answercount and quotient

    /**
     * Helper function for collected data, both for analysis page and export to excel
     *
     * @param stdClass $item the db-object from feedback_item
     * @param int $groupid
     * @param int $courseid
< * @return array
> * @return array|null
*/ protected function get_analysed($item, $groupid = false, $courseid = false) { $info = $this->get_info($item); $analysed_item = array(); $analysed_item[] = $item->typ; $analysed_item[] = format_string($item->name); //get the possible answers $answers = null; $answers = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation); if (!is_array($answers)) { return null; } //get the values $values = feedback_get_group_values($item, $groupid, $courseid, $this->ignoreempty($item)); if (!$values) { return null; } //get answertext, answercount and quotient for each answer $analysed_answer = array(); if ($info->subtype == 'c') { $sizeofanswers = count($answers); for ($i = 1; $i <= $sizeofanswers; $i++) { $ans = new stdClass(); $ans->answertext = $answers[$i-1]; $ans->answercount = 0; foreach ($values as $value) { //ist die Antwort gleich dem index der Antworten + 1? $vallist = explode(FEEDBACK_MULTICHOICE_LINE_SEP, $value->value); foreach ($vallist as $val) { if ($val == $i) { $ans->answercount++; } } } $ans->quotient = $ans->answercount / count($values); $analysed_answer[] = $ans; } } else { $sizeofanswers = count($answers); for ($i = 1; $i <= $sizeofanswers; $i++) { $ans = new stdClass(); $ans->answertext = $answers[$i-1]; $ans->answercount = 0; foreach ($values as $value) { //ist die Antwort gleich dem index der Antworten + 1? if ($value->value == $i) { $ans->answercount++; } } $ans->quotient = $ans->answercount / count($values); $analysed_answer[] = $ans; } } $analysed_item[] = $analysed_answer; return $analysed_item; } public function get_printval($item, $value) { $info = $this->get_info($item); $printval = ''; if (!isset($value->value)) { return $printval; } $presentation = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation); if ($info->subtype == 'c') { $vallist = array_values(explode (FEEDBACK_MULTICHOICE_LINE_SEP, $value->value)); $sizeofvallist = count($vallist); $sizeofpresentation = count($presentation); for ($i = 0; $i < $sizeofvallist; $i++) { for ($k = 0; $k < $sizeofpresentation; $k++) { if ($vallist[$i] == ($k + 1)) {//Die Werte beginnen bei 1, das Array aber mit 0 $printval .= trim(format_string($presentation[$k])) . chr(10); break; } } } } else { $index = 1; foreach ($presentation as $pres) { if ($value->value == $index) { $printval = format_string($pres); break; } $index++; } } return $printval; } public function print_analysed($item, $itemnr = '', $groupid = false, $courseid = false) { global $OUTPUT; $analysed_item = $this->get_analysed($item, $groupid, $courseid); if ($analysed_item) { $itemname = $analysed_item[1]; echo "<table class=\"analysis itemtype_{$item->typ}\">"; echo '<tr><th class="text-left">'; echo $itemnr . ' '; if (strval($item->label) !== '') { echo '('. format_string($item->label).') '; } echo format_string($itemname); echo '</th></tr>'; $analysed_vals = $analysed_item[2]; $count = 0; $data = []; foreach ($analysed_vals as $val) { $quotient = format_float($val->quotient * 100, 2); $strquotient = ''; if ($val->quotient > 0) { $strquotient = ' ('. $quotient . ' %)'; } $answertext = format_text(trim($val->answertext), FORMAT_HTML, array('noclean' => true, 'para' => false)); $data['labels'][$count] = $answertext; $data['series'][$count] = $val->answercount; $data['series_labels'][$count] = $val->answercount . $strquotient; $count++; } $chart = new \core\chart_bar(); $chart->set_horizontal(true); $series = new \core\chart_series(format_string(get_string("responses", "feedback")), $data['series']); $series->set_labels($data['series_labels']); $chart->add_series($series); $chart->set_labels($data['labels']); echo '<tr><td>'. $OUTPUT->render($chart) . '</td></tr>'; echo "</table>"; } } public function excelprint_item(&$worksheet, $row_offset, $xls_formats, $item, $groupid, $courseid = false) { $analysed_item = $this->get_analysed($item, $groupid, $courseid);
> if (!$analysed_item) { > return $row_offset; $data = $analysed_item[2]; > }
//frage schreiben $worksheet->write_string($row_offset, 0, $item->label, $xls_formats->head2); $worksheet->write_string($row_offset, 1, $analysed_item[1], $xls_formats->head2); if (is_array($data)) { $sizeofdata = count($data); for ($i = 0; $i < $sizeofdata; $i++) { $analysed_data = $data[$i]; $worksheet->write_string($row_offset, $i + 2, trim($analysed_data->answertext), $xls_formats->head2); $worksheet->write_number($row_offset + 1, $i + 2, $analysed_data->answercount, $xls_formats->default); $worksheet->write_number($row_offset + 2, $i + 2, $analysed_data->quotient, $xls_formats->procent); } } $row_offset += 3; return $row_offset; } /** * Options for the multichoice element * @param stdClass $item * @return array */ protected function get_options($item) { $info = $this->get_info($item); $presentation = explode (FEEDBACK_MULTICHOICE_LINE_SEP, $info->presentation); $options = array(); foreach ($presentation as $idx => $optiontext) { $options[$idx + 1] = format_text($optiontext, FORMAT_HTML, array('noclean' => true, 'para' => false)); } if ($info->subtype === 'r' && !$this->hidenoselect($item)) { $options = array(0 => get_string('not_selected', 'feedback')) + $options; } return $options; } /** * Adds an input element to the complete form * * This element has many options - it can be displayed as group or radio elements, * group of checkboxes or a dropdown list. * * @param stdClass $item * @param mod_feedback_complete_form $form */ public function complete_form_element($item, $form) { $info = $this->get_info($item); $name = $this->get_display_name($item); $class = 'multichoice-' . $info->subtype; $inputname = $item->typ . '_' . $item->id; $options = $this->get_options($item); $separator = !empty($info->horizontal) ? ' ' : '<br>'; $tmpvalue = $form->get_item_value($item) ?? 0; // Used for element defaults, so must be a valid value (not null). // Subtypes: // r = radio // c = checkbox // d = dropdown. if ($info->subtype === 'd' || ($info->subtype === 'r' && $form->is_frozen())) { // Display as a dropdown in the complete form or a single value in the response view. $element = $form->add_form_element($item, ['select', $inputname, $name, array(0 => '') + $options, array('class' => $class)], false, false); $form->set_element_default($inputname, $tmpvalue); $form->set_element_type($inputname, PARAM_INT); } else if ($info->subtype === 'c' && $form->is_frozen()) { // Display list of checkbox values in the response view. $objs = []; foreach (explode(FEEDBACK_MULTICHOICE_LINE_SEP, $form->get_item_value($item)) as $v) { $objs[] = ['static', $inputname."[$v]", '', isset($options[$v]) ? $options[$v] : '']; } $element = $form->add_form_group_element($item, 'group_'.$inputname, $name, $objs, $separator, $class); } else { // Display group or radio or checkbox elements. $class .= ' multichoice-' . ($info->horizontal ? 'horizontal' : 'vertical'); $objs = []; if ($info->subtype === 'c') { // Checkboxes. $objs[] = ['hidden', $inputname.'[0]', 0]; $form->set_element_type($inputname.'[0]', PARAM_INT); foreach ($options as $idx => $label) { $objs[] = ['advcheckbox', $inputname.'['.$idx.']', '', $label, null, array(0, $idx)]; $form->set_element_type($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); $info->subtype = $parts[0]; if (count($parts) > 1) { $info->presentation = $parts[1]; } if (!isset($info->subtype)) { $info->subtype = 'r'; } if ($info->subtype != 'd') { $parts = explode(FEEDBACK_MULTICHOICE_ADJUST_SEP, $info->presentation); $info->presentation = $parts[0]; if (count($parts) > 1) { $info->horizontal = $parts[1]; } if (isset($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($data[2])) {
> if ($data && !empty($data[2]) && is_array($data[2])) {
foreach ($data[2] as $d) { $externaldata[] = json_encode($d); } } return $externaldata; } }