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<?php
require_once __DIR__.'/template_helpers.php';
use Grading\Definition;
use Grading\Instance;
/**
* @SuppressWarnings(PHPMD.CamelCaseClassName)
*/
class Course_Gradebook_StudentsController extends AuthenticatedController
{
use GradebookTemplateHelpers;
/**
* @SuppressWarnings(PHPMD.CamelCaseMethodName)
* @SuppressWarnings(PHPMD.Superglobals)
*/
public function before_filter(&$action, &$args)
{
parent::before_filter($action, $args);
if (!$this->viewerIsStudent()) {
throw new AccessDeniedException();
}
$this->setDefaultPageTitle();
$this->setupStudentsSidebar();
}
/**
* @SuppressWarnings(PHPMD.CamelCaseMethodName)
*/
public function index_action()
{
if (Navigation::hasItem('/course/gradebook/index')) {
Navigation::activateItem('/course/gradebook/index');
}
$course = \Context::get();
$user = \User::findCurrent();
$this->gradingDefinitions = Definition::findByCourse($course);
$this->groupedDefinitions = $this->getGroupedDefinitions($this->gradingDefinitions);
$this->categories = Definition::getCategoriesByCourse($course);
$this->groupedInstances = $this->groupedInstances($course, $user);
$this->sumOfWeights = $this->getSumOfWeights($this->gradingDefinitions);
$this->subtotals = $this->getSubtotalGrades();
$this->total = $this->getTotalGrade();
}
/**
* @SuppressWarnings(PHPMD.CamelCaseMethodName)
*/
public function export_action()
{
$filename = FileManager::cleanFileName(
sprintf(
'gradebook-%s.csv',
\Context::getHeaderLine()
)
);
$course = \Context::get();
$user = \User::findCurrent();
$this->gradingDefinitions = Definition::findByCourse($course);
$this->groupedDefinitions = $this->getGroupedDefinitions($this->gradingDefinitions);
$this->categories = Definition::getCategoriesByCourse($course);
$this->groupedInstances = $this->groupedInstances($course, $user);
$lines = [];
foreach ($this->categories as $category) {
foreach ($this->groupedDefinitions[$category] as $definition) {
$instance = $this->groupedInstances[$definition->id] ?? null;
$lines[] = [
$category,
$definition->name,
$definition->tool,
$instance ? $instance->rawgrade : 0,
$instance ? $instance->feedback : null,
];
}
}
$headerLine = [
_('Kategorie'),
_('Leistung'),
_('Werkzeug'),
_('Fortschritt'),
_('Feedback'),
];
$data = array_merge([$headerLine], $lines);
$this->render_csv($data, $filename);
}
private function groupedInstances(\Course $course, \User $user)
{
$gradingInstances = Instance::findByCourseAndUser($course, $user);
$groupedInstances = [];
foreach ($gradingInstances as $instance) {
$groupedInstances[$instance->definition_id] = $instance;
}
return $groupedInstances;
}
private function getSubtotalGrades()
{
$subtotals = [];
foreach ($this->groupedDefinitions as $category => $definitions) {
$sumOfWeightedGrades = 0;
$sumOfWeights = 0;
foreach ($definitions as $definition) {
if (isset($this->groupedInstances[$definition->id])) {
$instance = $this->groupedInstances[$definition->id];
$sumOfWeightedGrades += $instance->rawgrade * $definition->weight;
}
$sumOfWeights += $definition->weight;
}
$subtotals[$category] = $sumOfWeights ? $sumOfWeightedGrades / $sumOfWeights : 0;
}
return $subtotals;
}
private function getTotalGrade()
{
$sumOfWeightedGrades = 0;
$sumOfWeights = 0;
foreach ($this->gradingDefinitions as $definition) {
if (isset($this->groupedInstances[$definition->id])) {
$instance = $this->groupedInstances[$definition->id];
$sumOfWeightedGrades += $instance->rawgrade * $definition->weight;
}
$sumOfWeights += $definition->weight;
}
return $sumOfWeights ? $sumOfWeightedGrades / $sumOfWeights : 0;
}
}
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