title: sequelize.js - Find by id and return result
body: <p>I have a function,</p>
  
  <pre><code>var findUserDevice = function(userDeviceId){
  
      var device = db.DeviceUser.find({
          where: {
              id: userDeviceId
          }
      }).then(function(device) {
          if (!device) {
              return 'not find';
          }
          return device.dataValues;
      });
  };
  </code></pre>
  
  <p>but this function does not return anything...</p>
  
  <pre><code>var UserDevice = findUserDevice(req.body.deviceUserId);
  console.log(UserDevice);// undefined
  </code></pre>