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<?php
/**
*
* @author Nils Gehrke <nils.gehrke@uni-goettingen.de>
* @author Ron Lucke <lucke@elan-ev.de>
*
* The column "range_type" represents the name of a class that implements
* FeedbackRange.
*
* @property int $id database column
* @property string $user_id database column
* @property string $range_id database column
* @property string $range_type database column
* @property string $course_id database column
* @property string $question database column
* @property string $description database column
* @property int $mode database column
* @property int $results_visible database column
* @property int $commentable database column
* @property int $anonymous_entries database column
* @property int $mkdate database column
* @property int $chdate database column
* @property SimpleORMapCollection<FeedbackEntry> $entries has_many FeedbackEntry
* @property Course $course belongs_to Course
* @property User $user belongs_to User
*/
class FeedbackElement extends SimpleORMap
{
public const MODE_NO_RATING = 0;
public const MODE_5STAR_RATING = 1;
public const MODE_10STAR_RATING = 2;
public static function configure($config = [])
{
$config['db_table'] = 'feedback';
$config['has_many']['entries'] = [
'class_name' => FeedbackEntry::class,
'assoc_foreign_key' => 'feedback_id',
'order_by' => 'ORDER BY mkdate DESC',
'on_delete' => 'delete'
];
$config['belongs_to']['course'] = [
'class_name' => Course::class,
'foreign_key' => 'course_id',
];
$config['belongs_to']['user'] = [
'class_name' => User::class,
'foreign_key' => 'user_id'
];
parent::configure($config);
}
/**
*
* @param string $user_id optional; use this ID instead of $GLOBALS['user']->id
*
* @return bool
*/
public function isFeedbackable(string $user_id = null): bool
{
$user_id = $user_id ?? $GLOBALS['user']->id;
$feedbackable = false;
if (Feedback::hasRangeAccess($this->range_id, $this->range_type, $user_id) && !$this->isOwner($user_id)) {
$already_feedbacked = $this->getOwnEntry($user_id);
if ($already_feedbacked === null) {
$feedbackable = true;
}
}
return $feedbackable;
}
/**
*
* @param string $user_id optional; use this ID instead of $GLOBALS['user']->id
*
* @return bool
*/
public function isOwner(string $user_id = null): bool
{
$user_id = $user_id ?? $GLOBALS['user']->id;
$ownership = false;
if ($this->user_id == $user_id) {
$ownership = true;
}
return $ownership;
}
/**
*
* @param string $user_id optional; use this ID instead of $GLOBALS['user']->id
*
* @return FeedbackEntry|null
*/
public function getOwnEntry(string $user_id = null)
{
$user_id = $user_id ?? $GLOBALS['user']->id;
return FeedbackEntry::findOneBySQL("feedback_id = ? AND user_id = ?", [$this->id, $user_id]);
}
public function getRatings()
{
$ratings = $this->entries->pluck('rating');
return $ratings;
}
public function getCountOfRating($rating)
{
$ratings = $this->entries->filter(function ($entry) use ($rating) {
return $entry->rating == $rating;
})->toArray();
return count($ratings);
}
public function getPercentageOfRating($rating)
{
$ratings = $this->getCountOfRating($rating);
$total = count($this->entries);
$percentage = ($ratings * 100) / $total;
return round($percentage);
}
public function getPercentageOfMeanRating($total)
{
$rating = round($this->getMeanOfRating(), 2);
$percentage = ($rating * 100) / $total;
return $percentage;
}
public function getMeanOfRating()
{
$ratings = $this->getRatings();
$count = count($ratings);
$mean = $count > 0 ? array_sum($ratings) / $count : 0;
return number_format($mean, 2, _(','), ' ');
}
public function getMaxRating()
{
switch ($this->mode) {
case self::MODE_5STAR_RATING:
return 5;
break;
case self::MODE_10STAR_RATING:
return 10;
break;
default:
return 0;
}
}
public function getAverageRating(): float
{
$ratings = $this->getRatings();
if (empty($ratings)) {
return 0;
}
return array_sum($ratings) / count($ratings);
}
public function hasEntries(): bool
{
return count($this->getRatings()) > 0;
}
public function getRange()
{
return $this->range_type::find($this->range_id);
}
}
|
