javascript - Sequelize : "Model has not been defined" when relationship across multiple databases

Question

我正在尝试为每个数据库实例化一个 Sequelize 。 DB1 中的某些表与 DB2 中的表有关系，并且是相反的。其中一个关系是 DB1.Utilisateur.contenuProvenance_id => DB2.Contenu.id 和 DB2.Contenu.utilisateur_id => DB1.Utilisateur.id。

这是 Utilisateur 模型:

@Table
export default class Utilisateur extends Model<Utilisateur> {

    @API() @PrimaryKey @AutoIncrement @Column({ type: DataType.INTEGER })
    public id!: number;

    @Column({ type: DataType.STRING, allowNull: false })
    public email!: string;

    @Column({ type: DataType.STRING, allowNull: false })
    public nom!: string;

    @ForeignKey(() => Utilisateur)
    @Column({ type: DataType.INTEGER, allowNull: true })
    public parrain_id?: number;

    @ForeignKey(() => Contenu)
    @Column({ type: DataType.INTEGER, allowNull: true })
    public contenuProvenance_id?: number;
}

(是的，我正在使用 sequelize-typescript 将我的模型声明为 Typescript 类)

以下是我的 Sequelize 实例的创建方式:

let DBs = {};
for (const ZONE of zones)
    DBs[ ZONE.name ] = new Sequelize(ZONE.serveur.bdd.nom, ZONE.serveur.bdd.login, ZONE.serveur.bdd.mdp, {
        host: ZONE.serveur.bdd.hote,
        dialect: "mariadb",
        ...
        models: ZONE.modeles // Array of models
    });

问题:创建第一个实例(DB1)时，sequelize 找不到 Content 表并给我这个错误:

Error: Contenu has not been defined
    at Sequelize.model (project/node_modules/sequelize/lib/sequelize.js:443:13)
    at Sequelize.model (project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:29:26)
    at project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:51:46
    at Array.forEach (<anonymous>)
    at project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:49:26
    at Array.forEach (<anonymous>)
    at Sequelize.associateModels (project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:45:16)
    at Sequelize.addModels (project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:37:14)
    at new Sequelize (project/node_modules/sequelize-typescript/dist/sequelize/sequelize/sequelize.js:19:22)

尽管数据库之间存在关系，是否可以一一创建 Sequelize 实例？

我应该在创建所有 sequelize 实例后添加模型吗？

谢谢你们的帮助

有关的:

SequelizeJS: How to include association (join) across multiple databases without using raw query

Answer 1

Sequalize 不支持多个迁移文件夹或区分您为单个模型设置的方法。你必须非常具体。我无法判断您是否来自您提供的内容。
看看这个 SO 问题是否有帮助:Migrations in Sequelize in my own folder structure
您必须围绕默认路径配置一种方式。
这也可能提供一些见解:https://medium.com/unetiq/using-multiple-databases-with-nodejs-and-sequelize-59e0abcbbe6f
您可以在此处阅读 Sequalize 关于迁移的详细信息:https://sequelize.org/master/manual/migrations.html#the-sequelizerc-file