/**
* Let current user follow user $target_id
*
* @return Response
*/
public function store()
{
$target_id = Input::get('target');
$user_id = Auth::id();
$params = array('user_id' => Auth::id(), 'target_id' => $target_id);
$follow = Follow::withTrashed($params)->where($params)->first();
if ($follow === null) {
$follow = new Follow($params);
$follow->save();
FeedManager::followUser($follow->user_id, $follow->target_id);
} elseif ($follow->trashed()) {
$follow->restore();
FeedManager::followUser($follow->user_id, $follow->target_id);
}
return Redirect::to(Input::get('next'));
}