Sample sequelize

gistfile1.js

    Uri.findAll(
        {
            include: [
                { model: CurrentMetaData, as: "metadata" }
            ],
            where: {
                type: revTypeMap[type]
            }
        }
    ).then(
        function (models) {
            var chainer = new Sequelize.Utils.QueryChainer();

            models.forEach(
                function (model) {
                    var emitter = new Sequelize.Utils.CustomEventEmitter(
                        function () {
                            model.metadatum.getMetadata().then(
                                function (metadata) {
                                    var subresult = model.toJSON();
                                    subresult.metadata = metadata.toJSON();
                                    subresult.metadata.metadata = JSON.parse(subresult.metadata.metadata);
                                    delete subresult.metadatum;

                                    result.push(subresult);

                                    emitter.emit("success");
                                }
                            );
                        }
                    );
                    chainer.add(emitter.run());
                }
            );
            chainer.run().on(
                "success",
                function () {
                    self.res.json(result);
                }
            );
        }
    );