docs: function create(req, res, next) {
    var body = req.body;
    body.user_id = req.session.user.id;
  
    db.posts.create(req.body, function(err, post) {
      if(err) { return next(err); }
  
      res.json(201, post);
      signals.emit('post:create', post);
    });
  }