Passing data from Sequelize model back to a route

In my Node.js / Express.js I make a call to a model (implemented in Sequelize) which is supposed to, for example, get a category or a list of all categories.

Now in Sequelize finders work like this:

Model.findAll().on('success', function(models) { /* foo */ })
Model.findAll().success(function(models) { /* foo */ })

In both cases they don't return anything directly, they only pass fetched models to .success() function. I would like to pass them back to the router where they're initially called.

If I do in the model,

return Model.findAll().success(function(models) { /* foo */ });

router receives undefined. But I do not want to pass router code as a callback to Sequelize because later in the router I want to do something else to the data and maybe fetch other models.

Any help regarding this would be appreciated.

UPDATE:

Example of a route, that renders this page: http://dev3.itemscope.com/c

module.exports = {
  GET : {
    index: function(req, res) {
      GLOBAL.routes.setLastVisitedPage(req);

      var render = function(models) {
        if (models !== null) {
          if (req.accepts('html')) {
              res.render('../views/category/index', {
                title: 'Categories',
                heading: 'Categories',
                categories: models,
                breadcrumbs: [
                  {
                    href: '/',
                    text: 'Home'
                  },
                  {
                    text: 'Categories'
                  }
                ],
                sidebarAdSlot: 'homepage_300x250'
              });
              return;
            }

            if (req.accepts('json') || req.accepts('javascript')) {
              return res.json(models);
            }
          }
          else {
            if (req.accepts('html')) {
              res.render('../views/category/index', {
                title: 'Categories',
                heading: 'No categories found',
                sidebarAdSlot: 'homepage_300x250'
              });
              return;
            }

            if (req.accepts('json') || req.accepts('javascript')) {
              return res.json(null);
            }
          }
      }

      Category.getAll(render);
      return;
    }
  }
}