异议 js：无法使用 join table extra 属性更新多对多关系。说额外的属性无效

Question

使用 ObjectionJS over knex over Postgres，我无法在与另一个模型有多对多关系的模型的连接 table 中修补额外的属性。即使在关注、阅读和重新阅读文档时，我也无法更新属性。尽管文档列出的内容与我正在做的完全相同。

基本上我有一个等候名单模型，该模型可能有很多用户，在这两个模型之间有一个连接 table，它有一个 "rank" 属性，就像一个索引一个列表。我正在尝试按照文档

中提供的 $relatedQuery 方法更新此排名属性

尝试了几种查询方法的组合，静态的和实例的；尝试为每个请求再次获取模型，尝试在两个模型而不是一个模型上添加关系（因为我不需要另一个模型来了解该关系），但无济于事

为了进行比较，这是 ObjectionJS 文档中有关可以找到的额外道具的内容的摘录 here

const linda = await Actor
  .query()
  .findOne({ name: 'Linda Hamilton' });

.
.
.

await linda
  .$relatedQuery('movies')
  .patch({ characterName: 'Florence' })
  .where('movies.name', 'Curvature')

在某处的方法中，我执行以下操作

// At some point above, I do a query().findOne to get the waitlist
// trx is a transaction object
// id is the id of the user I want to update the rank of
        await waitlist
          .$relatedQuery('users', trx)
          .patch({ rank: targetRank })
          .where({ id })

这是一个非常简单的迁移视图

  return knex.schema
    .createTable('users', (table) => {
      table
        .uuid('id')
        .primary()
        .notNullable()
      table.timestamp('createdAt').defaultTo(knex.fn.now())
      table.timestamp('updatedAt').defaultTo(knex.fn.now())
    })
    .createTable('waitlists', (table) => {
      table
        .uuid('id')
        .primary()
        .notNullable()
      table.timestamp('createdAt').defaultTo(knex.fn.now())
      table.timestamp('updatedAt').defaultTo(knex.fn.now())
    })
    .createTable('waitlists_users', (table) => {
      table.uuid('waitlistId')
      table
        .foreign('waitlistId')
        .references('id')
        .inTable('waitlists')
        .onDelete('CASCADE')
      table.uuid('userId')
      table
        .foreign('userId')
        .references('id')
        .inTable('users')
        .onDelete('CASCADE')
      table.primary(['waitlistId', 'userId'])
      table.integer('rank').index()
    })

最后是等候名单模型定义，不向用户提供，因为这对该模型应该是完全透明的，它不关心它的排名变化

  static tableName = 'waitlists'

  static jsonSchema = {
    type: 'object',
    required: [],
    properties: {},
  }

  static get relationMappings() {
    const UserModel = require('where/the/model/is/at').default

    return {
      users: {
        relation: ObjectionModel.ManyToManyRelation,
        modelClass: UserModel,
        join: {
          from: 'waitlists.id',
          through: {
            from: 'waitlists_users.waitlistId',
            to: 'waitlists_users.userId',
            extra: ['rank'],
          },
          to: 'users.id',
        },
      },
    }
  }

执行上面那个小补丁查询会导致这个

ValidationError: rank: is an invalid additional property
      at Function.createValidationError (node_modules/objection/lib/model/Model.js:397:12)
      at parseValidationError (node_modules/objection/lib/model/AjvValidator.js:189:21)
      at AjvValidator.validate (node_modules/objection/lib/model/AjvValidator.js:78:19)
      at validate (node_modules/objection/lib/model/modelValidate.js:35:20)
      at UserModel.$validate (node_modules/objection/lib/model/Model.js:133:12)
      at setJson (node_modules/objection/lib/model/modelSet.js:28:16)
      at UserModel.$setJson (node_modules/objection/lib/model/Model.js:171:12)
      at Function.fromJson (node_modules/objection/lib/model/Model.js:320:11)
      at Function.ensureModel (node_modules/objection/lib/model/Model.js:630:25)
      at ManyToManyUpdateOperation.onAdd (node_modules/objection/lib/queryBuilder/operations/UpdateOperation.js:22:29)
      at ManyToManyUpdateOperation.onAdd (node_modules/objection/lib/relations/manyToMany/update/ManyToManyUpdateOperationBase.js:28:23)
      at QueryBuilder.callOperationMethod (node_modules/objection/lib/queryBuilder/QueryBuilderOperationSupport.js:345:33)
      at QueryBuilder.addOperationUsingMethod (node_modules/objection/lib/queryBuilder/QueryBuilderOperationSupport.js:381:28)
      at QueryBuilder.addOperation (node_modules/objection/lib/queryBuilder/QueryBuilderOperationSupport.js:372:22)
      at writeOperation (node_modules/objection/lib/queryBuilder/QueryBuilder.js:890:12)
      at writeOperation (node_modules/objection/lib/queryBuilder/QueryBuilder.js:1465:5)

注意：我没有采用原始方法，但这只是最后的手段

编辑：为了澄清，任何看似虚拟的东西都是因为它是，我从 post 中删除了大部分包袱（如模型属性和方法），如果需要这些请告诉我。用户模式和候补名单模式都已完全开发和运行，它们可以干净地用于 crud。我希望能够在给定候补名单、用户和目标排名

的情况下修补加入 table 行

Answer 1

您的 json 架构必须包含 rank 属性，否则您需要允许其他属性或一起删除该虚拟架构。

http://json-schema.org/latest/json-schema-validation.html#rfc.section.6.5.6

  static jsonSchema = {
    type: 'object',
    required: [],
    properties: {},
    additionalProperties: true
  }

异议 js：无法使用 join table extra 属性更新多对多关系。说额外的属性无效

Objection js: Can't update many to many relation with join table extra property. Says additional property is invalid

node.js

orm

knex.js

objection.js

异议 js：无法使用 join table extra 属性 更新多对多关系。说额外的 属性 无效

Objection js: Can't update many to many relation with join table extra property. Says additional property is invalid

node.js

orm

knex.js

objection.js

异议 js：无法使用 join table extra 属性更新多对多关系。说额外的属性无效