无法正确访问联结 table 上的其他字段

Question

如果这很明显，我深表歉意，因为我对 sequelize 还没有太多经验。我正在尝试获取位于联结 table CustomerContact 中的字段。目前我正在获取联系人，然后检索其关联的客户

const contactList: Contact[] = await db()
        .Contact.newActiveScope()
        .withCustomers()
        .findAll();

const mainCustomer: Customer = contactList[i].getMainCustomer();

const mainCustomerContacts = mainCustomer && mainCustomer?.customerContacts;
const thisCustomerContactRole = mainCustomerContacts?.find((c) => c.contactId === contact.id)?.role;

输出 mainCustomer 得到以下信息

{
id: 'a94fd13a-1fdd-11ec-a12c-121c563gb2f5',
accountName: 'Test Tests',
CustomerContact: { role: 1, relationship: 2, status: 'active' }
}

我想使用 CustomerContact 中的属性，但尝试访问它时出现打字稿错误，提示 CustomerContact 在类型 ContactWithCustomerContactStatic 上不存在，它具有以下内容形状。

export  type  ContactWithCustomerContactStatic = Partial<Customer> &
Pick<CustomerContact, 'role' | 'relationship'>;

我在联系人模型中关联客户

this.belongsToMany(Customer, {
    as:  'customers',
    foreignKey:  'contactId',
    otherKey:  'customerId',
    through:  CustomerContact  as  CustomerContactStatic,
});
this.addScope('withCustomers', {
    include: [
        {
            as:  'customers',
            model:  Customer  as  CustomerStatic,
            where: { isArchived:  false },
            required:  false,
        },
    ],
});

反之亦然

Customer.belongsToMany(Contact, {
    as:  'contacts',
    through:  CustomerContact,
    foreignKey:  'customerId',
    otherKey:  'contactId',
});
  
Customer.addScope('contacts', () => ({
include: [
    {
        as:  'contacts',
        attributes: ['id', 'firstName', 'lastName'],
        model: (Contact  as  ContactStatic).newScope(),
        required:  false,
        through: {
            where: { status:  CustomerContactStatus.active },
        },
    },
],
}));

技术上我可以检索这些值，但打字稿错误让我停顿了一下。

我确定我遗漏了一些东西，但无法确定那是什么。任何帮助将不胜感激！

Answer 1

我认为 Typescript 显示此错误是因为您声明 ContactWithCustomerContactStatic 类型的方式。

export  type  ContactWithCustomerContactStatic = Partial<Customer> &
Pick<CustomerContact, 'role' | 'relationship'>;

以这种方式声明时，您对 Typescript 说 ContactWithCustomerContactStatic 类型具有以下形状

interface ContactWithCustomerContactStatic {
  // all properties from Customer interface comes here
  role // it's in the root
  relationship // it's also in the root
}

但是，鉴于您提供的输出，它们不在对象的根目录中

{
  id: 'a94fd13a-1fdd-11ec-a12c-121c563gb2f5',
  accountName: 'Test Tests',
  CustomerContact: { role: 1, relationship: 2, status: 'active' }
}

这应该有效

type ContactWithCustomerContactStatic = Partial<Customer> 
& { customerContact: Pick<CustomerContact, 'role' | 'relationship'> 
}

无法正确访问联结 table 上的其他字段

Unable to properly access additional fields on junction table

node.js

sequelize.js