序列化更新从插入的记录中获取新的ID

Question

我正在尝试终止/更新带有续集的嵌套关联。我正在尝试使用upsert进行此操作，因为我认为这是完成该任务的正确方法。因为我需要使用正确的FK更新第二个嵌套的关联，所以我认为我应该在第一次upsert之后获得插入的记录，但是我不知道该如何实现。

我正在使用Sequelize，我确实读过https://github.com/sequelize/sequelize/pull/8924和https://github.com/sequelize/sequelize/issues/3354，但找不到路。

这些是我的模型定义：

const Languages = sequelize.define('Languages', {
    name: {
        type: DataTypes.STRING
    },
    slug: {
        type: DataTypes.STRING,
        unique: true
    }
});
const Projects = sequelize.define('Projects', {
    rating: {
        type: DataTypes.INTEGER
    }
});
Projects.associate = function(models) {
    Projects.hasMany(models.ProjectImages);
};
const ProjectImages = sequelize.define('ProjectImages', {
    img: {
        type: CustomTypes.STRING
    }
});
ProjectImages.associate = models => {
    ProjectImages.hasMany(models.ProjectImagesTranslations);
};
const ProjectImagesTranslations = sequelize.define('ProjectImagesTranslations', {
    title: {
        type: DataTypes.STRING
    }
});
ProjectImagesTranslations.associate = function(models) {
    models.Languages.hasMany(ProjectImagesTranslations, {
        foreignKey: 'language',
        sourceKey: 'slug'
    });
};

现在我要保存一个项目的数据，其中包括一些图像，每个图像都包含一些翻译。

Projects.update(req.body, {
    where: {
        id: req.params.id
    }
}).then(result => {
    // Add fk to new items
    req.body.ProjectImages.forEach(item => {
        item['ProjectId'] = req.params.id;
    });
    // For each object in ProjectImages store an upsert in an array 
    // to execute it later with Promise.all()
    let ProjectImagesPromises = [];
    req.body.ProjectImages.map(item => {
        ProjectImagesPromises.push(
            ProjectImages.upsert(item, {
                where: {
                    id: item.id
                },
                returning: true
            }).then(result => {
                req.body.ProjectImagesTranslations.forEach(item => {
                    item['ProjectImageId'] = /* NEED THE ID OF THE NEW ProjectImage HERE */;
                });

                // For each object in ProjectImagesTranslations store 
                // an upsert in an array to execute it later with Promise.all()
               // [...]
            })
        );
    });
    Promise.all(ProjectImagesPromises).then(() => {
        // Find all data and return it
    });
});

如何获取ProjectImages.upsert()的新插入实例的ID？