type = UNIQUE_ANSWER;
$this->isContent = $this->getIsContent();
}
/**
* function which redefines Question::createAnswersForm
* @param FormValidator $form
*/
public function createAnswersForm($form)
{
// Getting the exercise list
$obj_ex = Session::read('objExercise');
$editor_config = array(
'FullPage' => true,
'ToolbarSet' => 'TestProposedAnswer',
'Width' => '100%',
'Height' => '125'
);
//this line defines how many questions by default appear when creating a choice question
// The previous default value was 2. See task #1759.
$nb_answers = isset($_POST['nb_answers']) ? (int) $_POST['nb_answers'] : 4;
$nb_answers += (isset($_POST['lessAnswers']) ? -1 : (isset($_POST['moreAnswers']) ? 1 : 0));
/*
Types of Feedback
$feedback_option[0]=get_lang('Feedback');
$feedback_option[1]=get_lang('DirectFeedback');
$feedback_option[2]=get_lang('NoFeedback');
*/
$feedback_title = '';
if ($obj_ex->selectFeedbackType() == EXERCISE_FEEDBACK_TYPE_DIRECT) {
//Scenario
$comment_title = '
' . get_lang('Comment') . ' | ';
$feedback_title = '' . get_lang('Scenario') . ' | ';
} else {
$comment_title = '' . get_lang('Comment') . ' | ';
}
$html = '
' . get_lang('Number') . ' |
' . get_lang('True') . ' |
' . get_lang('Answer') . ' |
' . $comment_title . '
' . $feedback_title . '
' . get_lang('Weighting') . ' |
';
$form->addHeader(get_lang('Answers'));
$form->addHtml($html);
$defaults = array();
$correct = 0;
if (!empty($this->id)) {
$answer = new Answer($this->id);
$answer->read();
if (count($answer->nbrAnswers) > 0 && !$form->isSubmitted()) {
$nb_answers = $answer->nbrAnswers;
}
}
$form->addElement('hidden', 'nb_answers');
//Feedback SELECT
$question_list = $obj_ex->selectQuestionList();
$select_question = array();
$select_question[0] = get_lang('SelectTargetQuestion');
if (is_array($question_list)) {
foreach ($question_list as $key => $questionid) {
//To avoid warning messages
if (!is_numeric($questionid)) {
continue;
}
$question = Question::read($questionid);
$select_question[$questionid] = 'Q' . $key . ' :' . cut(
$question->selectTitle(), 20
);
}
}
$select_question[-1] = get_lang('ExitTest');
$list = new LearnpathList(api_get_user_id());
$flat_list = $list->get_flat_list();
$select_lp_id = array();
$select_lp_id[0] = get_lang('SelectTargetLP');
foreach ($flat_list as $id => $details) {
$select_lp_id[$id] = cut($details['lp_name'], 20);
}
$temp_scenario = array();
if ($nb_answers < 1) {
$nb_answers = 1;
Display::display_normal_message(
get_lang('YouHaveToCreateAtLeastOneAnswer')
);
}
for ($i = 1; $i <= $nb_answers; ++$i) {
$form->addHtml('');
if (isset($answer) && is_object($answer)) {
if ($answer->correct[$i]) {
$correct = $i;
}
$defaults['answer[' . $i . ']'] = $answer->answer[$i];
$defaults['comment[' . $i . ']'] = $answer->comment[$i];
$defaults['weighting[' . $i . ']'] = float_format(
$answer->weighting[$i],
1
);
$item_list = explode('@@', $answer->destination[$i]);
$try = isset($item_list[0]) ? $item_list[0] : '';
$lp = isset($item_list[1]) ? $item_list[1] : '';
$list_dest = isset($item_list[2]) ? $item_list[2] : '';
$url = isset($item_list[3]) ? $item_list[3] : '';
if ($try == 0) {
$try_result = 0;
} else {
$try_result = 1;
}
if ($url == 0) {
$url_result = '';
} else {
$url_result = $url;
}
$temp_scenario['url' . $i] = $url_result;
$temp_scenario['try' . $i] = $try_result;
$temp_scenario['lp' . $i] = $lp;
$temp_scenario['destination' . $i] = $list_dest;
} else {
$defaults['answer[1]'] = get_lang('DefaultUniqueAnswer1');
$defaults['weighting[1]'] = 10;
$defaults['answer[2]'] = get_lang('DefaultUniqueAnswer2');
$defaults['weighting[2]'] = 0;
$temp_scenario['destination' . $i] = array('0');
$temp_scenario['lp' . $i] = array('0');
}
$defaults['scenario'] = $temp_scenario;
$renderer = $form->defaultRenderer();
$renderer->setElementTemplate(
'{error} {element} | ',
'correct'
);
$renderer->setElementTemplate(
'{error} {element} | ',
'counter[' . $i . ']'
);
$renderer->setElementTemplate(
'{error} {element} | ',
'answer[' . $i . ']'
);
$renderer->setElementTemplate(
'{error} {element} | ',
'comment[' . $i . ']'
);
$renderer->setElementTemplate(
'{error} {element} | ',
'weighting[' . $i . ']'
);
$answer_number = $form->addElement(
'text', 'counter[' . $i . ']', null, ' value = "' . $i . '"'
);
$answer_number->freeze();
$form->addElement(
'radio', 'correct', null, null, $i, 'class="checkbox"'
);
$form->addHtmlEditor('answer[' . $i . ']', null, null, true, $editor_config);
$form->addRule(
'answer[' . $i . ']', get_lang('ThisFieldIsRequired'), 'required'
);
if ($obj_ex->selectFeedbackType() == EXERCISE_FEEDBACK_TYPE_DIRECT) {
$form->addHtmlEditor('comment[' . $i . ']', null, null, false, $editor_config);
// Direct feedback
//Adding extra feedback fields
$group = array();
$group['try' . $i] = $form->createElement(
'checkbox',
'try' . $i,
null,
get_lang('TryAgain')
);
$group['lp' . $i] = $form->createElement(
'select',
'lp' . $i,
get_lang('SeeTheory') . ': ',
$select_lp_id
);
$group['destination' . $i] = $form->createElement(
'select',
'destination' . $i,
get_lang('GoToQuestion') . ': ',
$select_question
);
$group['url' . $i] = $form->createElement(
'text',
'url' . $i,
get_lang('Other') . ': ',
array(
'class' => 'col-md-2',
'placeholder' => get_lang('Other')
)
);
$form->addGroup($group, 'scenario');
$renderer->setElementTemplate(
'{error} {element}',
'scenario'
);
} else {
$form->addHtmlEditor('comment[' . $i . ']', null, null, false, $editor_config);
}
$form->addText('weighting[' . $i . ']', null, null, array('value' => '0'));
$form->addHtml(' |
');
}
$form->addHtml('');
$form->addHtml('
');
global $text;
$buttonGroup = [];
//ie6 fix
if ($obj_ex->edit_exercise_in_lp == true) {
//setting the save button here and not in the question class.php
$buttonGroup[] = $form->addButtonDelete(get_lang('LessAnswer'), 'lessAnswers', true);
$buttonGroup[] = $form->addButtonCreate(get_lang('PlusAnswer'), 'moreAnswers', true);
$buttonGroup[] = $form->addButtonSave($text, 'submitQuestion', true);
$form->addGroup($buttonGroup);
}
// We check the first radio button to be sure a radio button will be check
if ($correct == 0) {
$correct = 1;
}
$defaults['correct'] = $correct;
if (!empty($this->id)) {
$form->setDefaults($defaults);
} else {
if ($this->isContent == 1) {
// Default sample content.
$form->setDefaults($defaults);
} else {
$form->setDefaults(array('correct' => 1));
}
}
$form->setConstants(array('nb_answers' => $nb_answers));
}
/**
* Receives the unique answer question type creation form data and creates
* or updates the answers from that question
* @param FormValidator $form
*/
public function processAnswersCreation($form)
{
$questionWeighting = $nbrGoodAnswers = 0;
$correct = $form->getSubmitValue('correct');
$objAnswer = new Answer($this->id);
$nb_answers = $form->getSubmitValue('nb_answers');
for ($i = 1; $i <= $nb_answers; $i++) {
$answer = trim($form->getSubmitValue('answer[' . $i . ']'));
$comment = trim($form->getSubmitValue('comment[' . $i . ']'));
$weighting = trim($form->getSubmitValue('weighting[' . $i . ']'));
$scenario = $form->getSubmitValue('scenario');
//$list_destination = $form -> getSubmitValue('destination'.$i);
//$destination_str = $form -> getSubmitValue('destination'.$i);
$try = $scenario['try' . $i];
$lp = $scenario['lp' . $i];
$destination = $scenario['destination' . $i];
$url = trim($scenario['url' . $i]);
/*
How we are going to parse the destination value
here we parse the destination value which is a string
1@@3@@2;4;4;@@http://www.chamilo.org
where: try_again@@lp_id@@selected_questions@@url
try_again = is 1 || 0
lp_id = id of a learning path (0 if dont select)
selected_questions= ids of questions
url= an url
$destination_str='';
foreach ($list_destination as $destination_id)
{
$destination_str.=$destination_id.';';
}*/
$goodAnswer = ($correct == $i) ? true : false;
if ($goodAnswer) {
$nbrGoodAnswers++;
$weighting = abs($weighting);
if ($weighting > 0) {
$questionWeighting += $weighting;
}
}
if (empty($try)) {
$try = 0;
}
if (empty($lp)) {
$lp = 0;
}
if (empty($destination)) {
$destination = 0;
}
if ($url == '') {
$url = 0;
}
//1@@1;2;@@2;4;4;@@http://www.chamilo.org
$dest = $try . '@@' . $lp . '@@' . $destination . '@@' . $url;
$objAnswer->createAnswer(
$answer,
$goodAnswer,
$comment,
$weighting,
$i,
null,
null,
$dest
);
}
// saves the answers into the data base
$objAnswer->save();
// sets the total weighting of the question
$this->updateWeighting($questionWeighting);
$this->save();
}
/**
* Helper function to print the column titles in the answers edition form
* @param null $feedback_type The type of feedback influences what columns are shown to the editor
* @param null $counter The number of answers to show, in case there should be pagination
* @param null $score The maximum score for the question
* @return string HTML string for a table header + a wrapper before it
*/
public function return_header(
$feedback_type = null,
$counter = null,
$score = null
) {
$header = parent::return_header($feedback_type, $counter, $score);
$header .= '
' . get_lang("Choice") . ' |
' . get_lang("ExpectedChoice") . ' |
' . get_lang("Answer") . ' | ';
$header .= '' . get_lang("Comment") . ' | ';
$header .= '
';
return $header;
}
/**
* Saves one answer to the database
* @param int $id The ID of the answer (has to be calculated for this course)
* @param int $question_id The question ID (to which the answer is attached)
* @param string $title The text of the answer
* @param string $comment The feedback for the answer
* @param float|null $score The score you get when picking this answer
* @param int|null $correct Whether this answer is considered *the* correct one (this is the unique answer type)
*/
public function addAnswer(
$id,
$question_id,
$title,
$comment,
$score = 0.0,
$correct = 0
) {
$tbl_quiz_answer = Database::get_course_table(TABLE_QUIZ_ANSWER);
$tbl_quiz_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$course_id = api_get_course_int_id();
$question_id = intval($question_id);
$score = floatval($score);
$correct = intval($correct);
$title = Database::escape_string($title);
$comment = Database::escape_string($comment);
// Get the max position.
$sql = "SELECT max(position) as max_position
FROM $tbl_quiz_answer
WHERE
c_id = $course_id AND
question_id = $question_id";
$rs_max = Database::query($sql);
$row_max = Database::fetch_object($rs_max);
$position = $row_max->max_position + 1;
// Insert a new answer
$params = [
'c_id' => $course_id,
'id' => $id,
'question_id' => $question_id,
'answer' => $title,
'correct' => $correct,
'comment' => $comment,
'ponderation' => $score,
'position' => $position,
'destination' => '0@@0@@0@@0',
];
$id = Database::insert($tbl_quiz_answer, $params);
if ($id) {
$sql = "UPDATE $tbl_quiz_answer SET id = iid WHERE iid = $id";
Database::query($sql);
}
if ($correct) {
$sql = "UPDATE $tbl_quiz_question
SET ponderation = (ponderation + $score)
WHERE c_id = $course_id AND id = " . $question_id;
Database::query($sql);
}
}
}