Version: v6 - stable

型号定义

本页内容已移至模型基础。

¥The contents of this page were moved to Model Basics.

唯一的例外是 sequelize.import 上的指南，该指南已被弃用并已从文档中删除。但是，如果你确实需要它，它就保存在这里。

¥The only exception is the guide on sequelize.import, which is deprecated and was removed from the docs. However, if you really need it, it was kept here.

已弃用：`sequelize.import`

¥Deprecated: sequelize.import

注意：你不应该使用 sequelize.import。请仅使用 import、import() 或 require。

¥Note: You should not use sequelize.import. Please just use import, import(), or require instead.

保留此文档是为了以防万一你确实需要维护使用它的旧代码。

¥This documentation has been kept just in case you really need to maintain old code that uses it.

sequelize.import 只能加载 CommonJS 文件，不能加载 ecmascript modules。如果需要加载 ecmascript 模块，请使用原生 import。

¥sequelize.import can only load CommonJS files, and is not capable of loading ecmascript modules. Use native import if you need to load ecmascript modules.

你可以使用 sequelize.import 方法将模型定义存储在单个文件中。返回的对象与导入文件的函数中定义的完全相同。导入会被缓存，就像 require 一样，因此如果多次导入文件，你不会遇到麻烦。

¥You can store your model definitions in a single file using the sequelize.import method. The returned object is exactly the same as defined in the imported file's function. The import is cached, just like require, so you won't run into trouble if importing a file more than once.

// in your server file - e.g. app.js
const Project = sequelize.import(__dirname + '/path/to/models/project');

// The model definition is done in /path/to/models/project.js
module.exports = (sequelize, DataTypes) => {
  return sequelize.define('project', {
    name: DataTypes.STRING,
    description: DataTypes.TEXT,
  });
};

import 方法还可以接受回调作为参数。

¥The import method can also accept a callback as an argument.

sequelize.import('project', (sequelize, DataTypes) => {
  return sequelize.define('project', {
    name: DataTypes.STRING,
    description: DataTypes.TEXT,
  });
});

例如，当 Error: Cannot find module 被抛出时，即使 /path/to/models/project 看起来是正确的，这种额外的功能也很有用。某些框架（例如 Meteor）会重载 require，并且可能会引发错误，例如：

¥This extra capability is useful when, for example, Error: Cannot find module is thrown even though /path/to/models/project seems to be correct. Some frameworks, such as Meteor, overload require, and might raise an error such as:

Error: Cannot find module '/home/you/meteorApp/.meteor/local/build/programs/server/app/path/to/models/project.js'

这可以通过传入 Meteor 的 require 版本来解决：

¥This can be worked around by passing in Meteor's version of require:

// If this fails...
const AuthorModel = db.import('./path/to/models/project');

// Try this instead!
const AuthorModel = db.import('project', require('./path/to/models/project'));

已弃用：sequelize.import​

已弃用：`sequelize.import`