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);
}
