This works in Sails v0.10.0-rc7 (Waterline v0.10.0-rc12)

waterline.sails.mongo.native.example.js

/**
 * PetController
 *
 * @description :: Server-side logic for managing pets
 * @help        :: See http://links.sailsjs.org/docs/controllers
 */

module.exports = {
	index: function (req,res) {
    Pet.native(function(err, collection) {
      if (err) return res.serverError(err);

      collection.find({}, {
        name: true
      }).toArray(function (err, results) {
        if (err) return res.serverError(err);
        console.log('->',results);
        return res.ok(results);
      });
    });
  }
};

what's the meaning of collection.find({}, {
name: true
})?? collection is name of our collection? or Pet.native is for name of collection?

what's the meaning of collection.find({}, {
name: true
})?? collection is name of our collection? or Pet.native is for name of collection?

Neither. Collection is the collection instance.

If your collection is called pet, then your model is most likely Pet. Then: Pet.native((err, petCollection) => { would probably be more clear?