public function questionRecommendationsAction($scope = 'unit', $groupingId = '3', $debug = false)
{
$this->view->disable();
// Get our context (this takes care of starting the session, too)
$context = $this->getDI()->getShared('ltiContext');
if (!$context->valid) {
echo '[{"error":"Invalid lti context"}]';
return;
}
if (!isset($groupingId)) {
echo '[{"error":"No scope grouping ID specified"}]';
return;
}
$classHelper = new ClassHelper();
$group1 = [];
$group2 = [];
$group3 = [];
$group4 = [];
// Get the list of questions associated with concepts for the given scope and grouping ID
$questionRows = [];
switch ($scope) {
case "concept":
// Filter based on concept
$questionRows = MappingHelper::questionsInConcept($groupingId);
break;
case "unit":
// Filter based on unit
$questionRows = MappingHelper::questionsInConcepts(MappingHelper::conceptsInUnit($groupingId));
break;
default:
// Allowing all would take too long
echo '[{"error":"Invalid scope option"}]';
return;
break;
}
if ($debug) {
echo "<pre>Getting information for these questions in scope {$scope} and ID {$groupingId}\n";
print_r($questionRows);
}
$questions = [];
// Get some info about each question
foreach ($questionRows as $question) {
// Get number of attempts and number of correct attempts
$question["attempts"] = MasteryHelper::countAttemptsForQuestion($context->getUserName(), $question["OA Quiz ID"], $question["Question Number"], $debug);
$question["correctAttempts"] = MasteryHelper::countCorrectAttemptsForQuestion($context->getUserName(), $question["OA Quiz ID"], $question["Question Number"], $debug);
// Get amount of associated videos watched
$question["videoPercentage"] = MasteryHelper::calculateUniqueVideoPercentageForQuestion($context->getUserName(), $question);
// Variables used in the display table
// This is one place where we're just using correct, not better correct, attempts
$question["correct"] = $question["correctAttempts"]["correct"] > 0;
$question["classAverageAttempts"] = $classHelper->calculateAverageAttemptsForQuestion($question["OA Quiz ID"], $question["Question Number"], $debug);
$question["classViewedHint"] = $classHelper->calculateViewedHintPercentageForQuestion($question["OA Quiz ID"], $question["Question Number"], $debug);
$question["classViewedAnswer"] = $classHelper->calculateViewedAnswerPercentageForQuestion($question["OA Quiz ID"], $question["Question Number"], $debug);
$questions[] = $question;
}
// Fetch question texts for all questions in these assessments
// Get the Open Assessments API endpoint from config
$assessmentsEndpoint = $this->getDI()->getShared('config')->openassessments_endpoint;
// Extract a list of assessment IDs from our list of questions. We'll get question texts for these.
$assessmentIDs = ["assessment_ids" => array_values(array_unique(array_column($questions, "OA Quiz ID")))];
$request = $assessmentsEndpoint . "api/question_text";
//$request = "http://192.168.33.102/api/question_text";
if ($debug) {
echo "Fetching question texts for these assessment IDs:\n";
print_r(array_column($questions, "OA Quiz ID"));
print_r($assessmentIDs);
echo $request;
}
#print_r($assessmentIDs);
#echo json_encode($request);
$session = curl_init($request);
curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
curl_setopt($session, CURLOPT_POST, 1);
curl_setopt($session, CURLOPT_POSTFIELDS, json_encode($assessmentIDs));
$response = curl_exec($session);
#echo json_encode($questionRows);
// Catch curl errors
if (curl_errno($session)) {
$error = "Curl error: " . curl_error($session);
}
curl_close($session);
#print_r($response);
$questionTexts = json_decode($response, true);
if ($debug) {
print_r($questionTexts);
}
foreach ($questions as $key => $q) {
// Make sure the question text exists before setting it
$questions[$key]["display"] = isset($questionTexts[$q["OA Quiz ID"]][$q["Question Number"] - 1]) ? $questionTexts[$q["OA Quiz ID"]][$q["Question Number"] - 1] : "Error getting question text for #{$q["OA Quiz ID"]} # #{$q["Question Number"]}-1";
// Avoid off-by-one error. The question id from statement object id will be 1 to n+1
//$q["questionText"] = $questionText;
}
// Now go through the questions for each group and find matching questions
foreach ($questions as $question) {
// Group 1:
// Questions with 0 attempts
if ($question["attempts"] == 0) {
$group1[] = $question;
}
// Group 2:
// >0 attempts for each question
// No correct statements without a show answer statement in the preceding minute for each question (correctAttempts < 1)
// Watched less than half of the videos associated with each question
if ($question["attempts"] > 0 && $question["correctAttempts"]["betterCorrect"] == 0 && $question["videoPercentage"] < 0.5) {
$group2[] = $question;
}
// Group 3:
// >0 attempts for each question
// No correct statements without a show answer statement in the preceding minute for each question (correctAttempts < 1)
// Watched more than half of the videos associated with each question
if ($question["attempts"] > 0 && $question["correctAttempts"]["betterCorrect"] == 0 && $question["videoPercentage"] >= 0.5) {
$group3[] = $question;
}
// Group 4:
// > 0 correct statements without a show answer statement in the preceding minute for each question (correctAttempts > 0)
// More than 1 attempt
if ($question["correctAttempts"]["betterCorrect"] > 0 && $question["attempts"] > 1) {
$group4[] = $question;
}
}
if ($debug) {
print_r($questions);
}
$result = ["group1" => $group1, "group2" => $group2, "group3" => $group3, "group4" => $group4];
echo json_encode($result);
}
