orm - ORM 续集可以具有多态性吗？

Question

我有一个名为 User 的模型。我可以从 User 模型扩展另一个模型 Admin/mod 吗？我找到了续集文档，但我没有找到

Answer 1

是的，查看 Associations documentation ，或更完整地在 Scopes documentation .

从文档:

this.Comment = this.sequelize.define('comment', {
  title: Sequelize.STRING,
  commentable: Sequelize.STRING,
  commentable_id: Sequelize.INTEGER
});

this.Comment.prototype.getItem = function() {
  return this['get' + this.get('commentable').substr(0, 1).toUpperCase() + this.get('commentable').substr(1)]();
};

this.Post.hasMany(this.Comment, {
  foreignKey: 'commentable_id',
  constraints: false,
  scope: {
    commentable: 'post'
  }
});
this.Comment.belongsTo(this.Post, {
  foreignKey: 'commentable_id',
  constraints: false,
  as: 'post'
});

this.Image.hasMany(this.Comment, {
  foreignKey: 'commentable_id',
  constraints: false,
  scope: {
    commentable: 'image'
  }
});
this.Comment.belongsTo(this.Image, {
  foreignKey: 'commentable_id',
  constraints: false,
  as: 'image'
});