public function conceptsAction($unit = '1')
{
$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;
}
$concepts = MappingHelper::conceptsInUnit($unit);
$maxPercentage = 0;
$conceptArray = [];
foreach ($concepts as $concept) {
$conceptID = $concept['Lecture Number'];
$historicalConceptMasteryScores = ClassConceptHistory::find(["concept_id = '{$conceptID}'", "order" => 'time_stored DESC']);
$newConcept = ["id" => $conceptID, "title" => $concept["Concept Title"], "history" => []];
foreach ($historicalConceptMasteryScores as $score) {
$newConcept["history"][] = ["date" => $score->time_stored, "average" => $score->average_mastery, "percent" => $score->videopercentage];
}
$newConcept["history"] = $newConcept["history"][0];
if ($newConcept["history"]["percent"] > $maxPercentage) {
$maxPercentage = $newConcept["history"]["percent"];
}
$conceptsArray[] = $newConcept;
}
$firstRow = ["max" => $maxPercentage];
array_unshift($conceptsArray, $firstRow);
echo json_encode($conceptsArray);
}
public function classConceptHistoryAction()
{
$config = $this->getDI()->getShared('config');
if (!isset($_GET["p"])) {
die("No history saver password provided.");
}
if ($_GET["p"] != $config->historySaverPassword) {
die("Invalid history saver password provided.");
}
// We want to time this
$startTime = microtime(true);
$raw = false;
$debug = false;
$classHelper = new ClassHelper();
$masteryHelper = new MasteryHelper();
$allConcepts = MappingHelper::allConcepts();
$studentIds = $classHelper->allStudents();
//$studentIds = ["John Logie Baird"];
foreach ($allConcepts as $concept) {
$classHelper = new ClassHelper();
$masteryHelper = new MasteryHelper();
$studentIds = $classHelper->allStudents();
$sum = 0;
foreach ($studentIds as $student) {
$sum += $masteryHelper->calculateUniqueVideoPercentageForConcept($student, $concept);
}
$avg = $sum / count($studentIds);
echo $avg;
$lecNum = $concept["Lecture Number"];
$lastHistory = ClassConceptHistory::findFirst(["concept_id = {$lecNum}", "order" => "time_stored DESC"]);
if (date("Y-m-d") == date("Y-m-d", strtotime($lastHistory->time_stored))) {
echo " History already saved today for concept #{$lecNum}\n";
continue;
}
$scoreSum = 0;
$scoreCount = 0;
// Check if it's a concept in the future
$today = strtotime("today");
$includeZero = true;
if (strtotime($concept["Date"]) > $today) {
$includeZero = false;
}
// Calculate concept score for each student
foreach ($studentIds as $studentId) {
// Calculate score
$score = $masteryHelper->calculateConceptMasteryScore($studentId, $concept["Lecture Number"], $debug);
// Add score
if ($score == 0) {
if ($includeZero) {
$scoreCount++;
}
} else {
$scoreCount++;
$scoreSum += $score;
}
}
// Calculate average
$average = $scoreSum / $scoreCount;
// Store concept average
$conceptHistory = new ClassConceptHistory();
$conceptHistory->concept_id = $concept["Lecture Number"];
$conceptHistory->average_mastery = $average;
$conceptHistory->videopercentage = $avg;
if ($conceptHistory->create() == false) {
echo "*** Error saving concept history for {$concept}\n";
} else {
}
}
// Print total time taken
$endTime = microtime(true);
echo "Execution time: " . ($endTime - $startTime) . " seconds\n";
}
