public function updateRating(TeacherVoteModel $newVote)
{
//countOfVotes include newVote
$countOfVotes = TeacherVoteModel::getVotesCountFromTeacher($this);
$newRating = (($countOfVotes - 1) * $this->teacher_rating + $newVote->ratingMarkAvg) / $countOfVotes;
$this->teacher_rating = round($newRating, 3);
}
/**
* url POST /v2/teachers/{teacher_name|teacher_id}/vote
* parameters: mark_knowledge_subject,mark_exactingess,mark_relation_to_the_student,mark_sense_of_humor
* @api
* @param array $data
* @return string
* @throws ApiException
*/
public function teachers_voteRelationAction($data)
{
if (isset($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_METHOD"])) {
if ($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_METHOD" != "POST"]) {
throw new ApiException("Bad request method (POST only)!", 400);
}
}
if (isset($_SERVER["REQUEST_METHOD"]) || isset($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_METHOD"])) {
if ($_SERVER["REQUEST_METHOD"] != "POST") {
throw new ApiException("Bad request method (POST only)!", 400);
}
}
$mark1 = isset($_REQUEST["mark_knowledge_subject"]) ? floatval($_REQUEST["mark_knowledge_subject"]) : 0;
$mark2 = isset($_REQUEST["mark_exactingness"]) ? floatval($_REQUEST["mark_exactingness"]) : 0;
$mark3 = isset($_REQUEST["mark_relation_to_the_student"]) ? floatval($_REQUEST["mark_relation_to_the_student"]) : 0;
$mark4 = isset($_REQUEST["mark_sense_of_humor"]) ? floatval($_REQUEST["mark_sense_of_humor"]) : 0;
if (!Utilities::inRange($mark1, 1, 5) || !Utilities::inRange($mark2, 1, 5) || !Utilities::inRange($mark3, 1, 5) || !Utilities::inRange($mark4, 1, 5)) {
throw new ApiException("Invalid parameters: all marks values must be between 1 and 5", 400);
}
$teacherIdOrName = urldecode($data["teachers"]);
/** @var TeacherModel $teacher */
$teacher = TeacherModel::getByNameOrId($teacherIdOrName, true);
$vote = new TeacherVoteModel();
$vote->teacherId = $teacher->teacher_id;
$vote->ratingMark1 = $mark1;
$vote->ratingMark2 = $mark2;
$vote->ratingMark3 = $mark3;
$vote->ratingMark4 = $mark4;
$vote->userIp = ip2long(Utilities::getRealIp());
$vote->userAgent = Utilities::getUserAgent();
$vote->ratingMarkAvg = round(($mark1 + $mark3) / 2, 2);
$vote->userDatetime = time();
if (!$vote->canVote()) {
throw new ApiException("You have already voted!", 400);
}
// add new vote
$vote->save();
//update teacher rating
$teacher->updateRating($vote);
$teacher->save();
$this->message = "Created";
$result = array();
$result["teacher"] = $teacher->toArray();
$result["vote"] = $vote->toArray();
$result["rating"] = TeacherRatingModel::getTeacherAvgRatings($teacher->teacher_id)->toArray();
$this->data = $result;
return $this->send(201, Cache::NoCache);
}