Model Include return 属性的选项作为具有定义别名的单个值而不是具有属性的对象

Question

我有 2 个模型：

Property
Account

A Property hasOne Account

属性

Property.belongsTo(models.Account, {
  as: 'account',
  foreignKey: 'accountNumber'
});

账户

Account.hasOne(models.Property, {
  as: 'property',
  foreignKey: 'accountNumber'
});

在 findAll 查询中我有

const properties = await Property.findAll({
 attributes: ['accountNumber'],
 include: [
      {
        model: Models.Account,
        as: 'account',
        attributes: ['organisation', 'email'],  
      },
 ]
});

这 returns 每个项目一个对象;

{ 
  "accountNumber":"AC0012",
  "account":{ 
    "organisation":"Example Org",
    "email":"email@email.com"
  }
}

然而，我的目标是，

{ 
  "accountNumber":"AC0012",
  "accountOrganisation":"Example Org",
  "accountEmail":"email@email.com"
}

当前MySQL查询如下；

SELECT `Property`.`id`, 
`Property`.`account_number` AS `accountNumber`, 
`account`.`account_number` AS `account.accountNumber`, 
`account`.`organisation` AS `account`.`organisation`, 
`account`.`email` AS `account.email` 
FROM `property_dev`.`property` 
AS `Property` 
LEFT OUTER JOIN `property_dev`.`account` AS `account` 
ON `Property`.`account_number` = `account`.`account_number`

我需要更新使用的别名；

`account`.`organisation` AS `account`.`organisation`, 
`account`.`email` AS `account.email`

到

`account`.`organisation` AS `accountOrganisation`, 
`account`.`email` AS `accountEmail`

我怎样才能做到这一点？看起来很简单，但我似乎无法查询正确的解决方案。我可能在搜索中使用了不正确的术语，浏览官方文档并没有引导我找到解决方案。

如有任何帮助，我们将不胜感激

Answer 1

您可以使用带有 [value, key] 的数组为连接的列添加别名，其中值是包含模型的 sequelize.col() 值。由于您只需要原始 JSON 结果，您还可以传入 raw: true 以不将结果解析为模型实例以获得更好的性能。

const properties = await Property.findAll({
  attributes: [
    'accountNumber',
    [sequelize.col('account.organisation'), 'accountOrganisation'],
    [sequelize.col('account.email'), 'accountEmail'],
  ],
  include: {
    model: Models.Account,
    as: 'account',
    attributes: [],
  },
  raw: true,
});

Model Include return 属性的选项作为具有定义别名的单个值而不是具有属性的对象

Model Include option to return attributes as single value with defined alias instead of an object with properties

javascript

mysql

express

sequelize.js

属性

账户