title: Execute Sequelize queries synchronously
body: <p>I am building a website using Node.js and Sequelize (with a Postgres backend). I have a query that returns many objects with a foreign key, and I want to pass to the view a list of the objects that the foreign key references.</p>
  
  <p>In the example, Attendances contains Hackathon keys, and I want to return a list of hackathons. Since the code is async, the following thing of course does not work in Node:</p>
  
  <pre><code>models.Attendance.findAll({
      where: {
          UserId: req.user.id
      }
  }).then(function (data) {
      var hacks = [];
      for (var d in data) {
          models.Hackathon.findOne({
              where: {
                  id: data[d].id
              }
          }).then(function (data1) {
              hacks.append(data1);
          });
      }
      res.render('dashboard/index.ejs', {title: 'My Hackathons', user: req.user, hacks: hacks});
  });
  </code></pre>
  
  <p>Is there any way to do that query in a synchronous way, meaning that I don't return the view untill I have the "hacks" list filled with all the objects?</p>
  
  <p>Thanks!</p>