function toggle_like()
{
Auth::checkLoggedIn();
$answer = QuestionAnswer::fromId(Input::get('answerid'));
if (!$answer->canView(Auth::getUser())) {
throw new Exception('You are not allowed to like this answer.');
}
$answer->toggleLike(Auth::getUser());
View::renderJson($answer->getContext(Auth::getUser()));
}
/**
* Determines whether or not a given user can edit the question.
* @param User $user The user to check.
* @return boolean
*/
public function canEdit(User $user)
{
// See if they are a professor for the course
$entry = Entry::fromId($this->getEntryId());
if ($entry->canEdit($user)) {
return true;
}
// See if they asked the question
$firstAnswer = QuestionAnswer::fromId($this->getFirstAnswerId());
if ($firstAnswer->getUserId() == $user->getUserId()) {
return true;
}
// They cannot edit
return false;
}
