function save_question_options($question)
{
global $DB;
$result = new stdClass();
if (!($oldanswers = $DB->get_records('question_answers', array('question' => $question->id), 'id ASC'))) {
$oldanswers = array();
}
$answers = array();
$maxfraction = -1;
// Insert all the new answers
foreach ($question->answer as $key => $dataanswer) {
// Check for, and ingore, completely blank answer from the form.
if (trim($dataanswer) == '' && $question->fraction[$key] == 0 && html_is_blank($question->feedback[$key])) {
continue;
}
if ($oldanswer = array_shift($oldanswers)) {
// Existing answer, so reuse it
$answer = $oldanswer;
$answer->answer = trim($dataanswer);
$answer->fraction = $question->fraction[$key];
$answer->feedback = $question->feedback[$key];
$DB->update_record("question_answers", $answer);
} else {
// This is a completely new answer
$answer = new stdClass();
$answer->answer = trim($dataanswer);
$answer->question = $question->id;
$answer->fraction = $question->fraction[$key];
$answer->feedback = $question->feedback[$key];
$answer->id = $DB->insert_record("question_answers", $answer);
}
$answers[] = $answer->id;
if ($question->fraction[$key] > $maxfraction) {
$maxfraction = $question->fraction[$key];
}
}
$question->answers = implode(',', $answers);
$parentresult = parent::save_question_options($question);
if ($parentresult !== null) {
// Parent function returns null if all is OK
return $parentresult;
}
// delete old answer records
if (!empty($oldanswers)) {
foreach ($oldanswers as $oa) {
$DB->delete_records('question_answers', array('id' => $oa->id));
}
}
/// Perform sanity checks on fractional grades
if ($maxfraction != 1) {
$maxfraction = $maxfraction * 100;
$result->noticeyesno = get_string("fractionsnomax", "quiz", $maxfraction);
return $result;
} else {
return true;
}
}
function save_question_options($question)
{
$result = new stdClass();
$conditions = array();
$conditions_uncleaned = explode("\r\n", $question->conditions);
foreach ($conditions_uncleaned as $condition_uncleaned) {
if (strlen(trim($condition_uncleaned)) > 0) {
$conditions[] = trim($condition_uncleaned);
}
}
$question->conditions = implode("\r\n", $conditions);
$parentresult = parent::save_question_options($question);
if ($parentresult !== null) {
// Parent function returns null if all is OK
return $parentresult;
}
}
/**
* Saves question-type specific options
*
* This is called by {@link save_question()} to save the question-type specific data from a
* submitted form. This method takes the form data and formats into the correct format for
* writing to the database. It then calls the parent method to actually write the data.
*
* @param object $question This holds the information from the editing form,
* it is not a standard question object.
* @return object $result->error or $result->noticeyesno or $result->notice
*/
function save_question_options($question)
{
// Start a try block to catch any exceptions generated when we attempt to parse and
// then add the answers and variables to the database
try {
// Loop over all the answers in the question form and parse them to generate
// a parser string. This ensures a constant formatting is stored in the database
foreach ($question->answer as &$answer) {
$expr = $this->parse_expression($answer);
$answer = $expr->sage();
}
// Now we need to write out all the answers to the question to the database
$answers = $this->save_question_answers($question);
$question->answers = implode(',', $answers);
// The next task is to write out all the variables associated with the question
$variables = $this->save_question_variables($question);
$question->variables = implode(',', $variables);
} catch (Exception $e) {
// Error when adding answers orvariables to the database so create a result class
// and put the error string in the error member funtion and then return the class
// This keeps us compatible with the existing save_question_options methods.
$result = new stdClass();
$result->error = $e->getMessage();
return $result;
}
// Process the allowed functions field. This code just sets up the variable, it is saved
// in the parent class' save_question_options method called at the end of this method
// Look for the 'all' option. If we find it then set the string to an empty value
if (array_key_exists('all', $question->allowedfuncs)) {
$question->allowedfuncs = '';
} else {
// Create a comma separated string of the function names which are stored in the
// keys of the array
$question->allowedfuncs = implode(',', array_keys($question->allowedfuncs));
}
// Call the parent method to write the extensions fields to the database. This either returns null
// or an error object so if we get anything then return it otherwise return our existing
if ($res = parent::save_question_options($question)) {
return $res;
} else {
return true;
}
}
function save_question_options($question)
{
global $DB;
$result = new stdClass();
$context = $question->context;
$oldanswers = $DB->get_records('question_answers', array('question' => $question->id), 'id ASC');
// Insert all the new answers
$answers = array();
$maxfraction = -1;
foreach ($question->answer as $key => $answerdata) {
// Check for, and ignore, completely blank answer from the form.
if (trim($answerdata) == '' && $question->fraction[$key] == 0 && html_is_blank($question->feedback[$key]['text'])) {
continue;
}
// Update an existing answer if possible.
$answer = array_shift($oldanswers);
if (!$answer) {
$answer = new stdClass();
$answer->question = $question->id;
$answer->answer = '';
$answer->feedback = '';
$answer->id = $DB->insert_record('question_answers', $answer);
}
$answer->answer = trim($answerdata);
$answer->fraction = $question->fraction[$key];
$answer->feedback = $this->import_or_save_files($question->feedback[$key], $context, 'question', 'answerfeedback', $answer->id);
$answer->feedbackformat = $question->feedback[$key]['format'];
$DB->update_record('question_answers', $answer);
$answers[] = $answer->id;
if ($question->fraction[$key] > $maxfraction) {
$maxfraction = $question->fraction[$key];
}
}
// Delete any left over old answer records.
$fs = get_file_storage();
foreach ($oldanswers as $oldanswer) {
$fs->delete_area_files($context->id, 'question', 'answerfeedback', $oldanswer->id);
$DB->delete_records('question_answers', array('id' => $oldanswer->id));
}
$question->answers = implode(',', $answers);
$parentresult = parent::save_question_options($question);
if ($parentresult !== null) {
// Parent function returns null if all is OK
return $parentresult;
}
// Perform sanity checks on fractional grades
if ($maxfraction != 1) {
$result->noticeyesno = get_string('fractionsnomax', 'quiz', $maxfraction * 100);
return $result;
}
return true;
}
