在 Sequelize 的连接 Table 上添加属性

Question

我在设置联结点的属性时遇到问题 table。

我通过自定义 table HangUsers.

在两个模型 UserModel 和 HangModel 之间定义了多对多关联

const HangModel = rootRequire('/models/Hang');
const UserModel = rootRequire('/models/User');

const HangUsers = database.define('HangUsers', {
  id: {
    type: Sequelize.INTEGER(10).UNSIGNED,
    primaryKey: true,
    autoIncrement: true,
  },
  hangId: {
    type: Sequelize.INTEGER(10).UNSIGNED,
    references: {
      model: HangModel,
      key: 'id',
    },
  },
  userId: {
    type: Sequelize.INTEGER(10).UNSIGNED,
    references: {
      model: UserModel,
      key: 'id',
    },
  },
  rsvp: {
    type: Sequelize.STRING,
    allowNull: false,
    validate: {
      isIn: {
        args: [ 'pending', 'joined' ],
        msg: 'The rsvp provided is invalid',
      },
    },
  },
});

UserModel.hasMany(HangUsers, { as: 'invitations' });
HangModel.hasMany(HangUsers, { as: 'invites' });

UserModel.belongsToMany(HangModel, { through: HangUsers });
HangModel.belongsToMany(UserModel, { through: HangUsers });

通过 table 有一个列 rsvp，我在将用户添加到挂起时试图填充该列：

const hang = await HangModel.create();
await hang.addUser(user, { through: { rvsp: 'joined' } });

但是，我收到一个错误：

AggregateError
    at recursiveBulkCreate (/Users/sgarza62/ditto-app/api/node_modules/sequelize/lib/model.js:2600:17)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
    at async Function.bulkCreate (/Users/sgarza62/ditto-app/api/node_modules/sequelize/lib/model.js:2824:12)
    at async Promise.all (index 0)
    at async BelongsToMany.add (/Users/sgarza62/ditto-app/api/node_modules/sequelize/lib/associations/belongs-to-many.js:740:30)
    at async /Users/sgarza62/ditto-app/api/routes/hangs.js:121:3 {
  name: 'AggregateError',
  errors: [
    BulkRecordError [SequelizeBulkRecordError]: notNull Violation: HangUsers.rsvp cannot be null
        at /Users/sgarza62/ditto-app/api/node_modules/sequelize/lib/model.js:2594:25
        at processTicksAndRejections (internal/process/task_queues.js:97:5) {
      name: 'SequelizeBulkRecordError',
      errors: [ValidationError],
      record: [HangUsers]
    }
  ]
}

当我在 rsvp 列上允许空值时，HangUsers 行 已创建，但 rsvp 值为 NULL。

似乎忽略了 { through: { rsvp: 'joined' } } 参数。

我已经根据 BelongsToMany docs and the Advanced M:N Associations docs 完成了这一切，上面写着：

However, defining the model by ourselves has several advantages. We can, for example, define more columns on our through table:
const User_Profile = sequelize.define('User_Profile', {
  selfGranted: DataTypes.BOOLEAN
}, { timestamps: false });
User.belongsToMany(Profile, { through: User_Profile });
Profile.belongsToMany(User, { through: User_Profile });
With this, we can now track an extra information at the through table, namely the selfGranted boolean. For example, when calling the user.addProfile() we can pass values for the extra columns using the through option.

Example:
const amidala = await User.create({ username: 'p4dm3', points: 1000 });
const queen = await Profile.create({ name: 'Queen' });
await amidala.addProfile(queen, { through: { selfGranted: false } });
const result = await User.findOne({
  where: { username: 'p4dm3' },  
  include: Profile
});
console.log(result);

Answer 1

只是属性名称的拼写错误：'rvsp' 应该是 'rsvp'。

在 Sequelize 的连接 Table 上添加属性

Adding Attributes on a Join Table in Sequelize

node.js

sequelize.js