Bookshelf.js: 一对多关系设置

Question

我将 Bookshelf 用于 MySQL 的 ORM。我有端点和组织。每个端点都属于一个组织，一个组织有很多端点。我正在尝试获取端点及其关联组织的列表。这将返回以下错误：

"A valid target model must be defined for the endpoint belongsTo relation"

这是我的 fetchAll 请求：

Endpoint
            .where('organization_id', req.user.attributes.organization_id)
            .fetchAll({require: true,withRelated: ['settings', 'organization']})
            .then((endpoints) => {
                ReS(res, {
                    endpoints
                }, 200);
            })

这是我的端点模型：

'use strict';

const bookshelf = require('../config/bookshelf_instance');
const Organization = require('./organization');
const Settings = require('./endpoint_settings');
const Group = require('./endpoint_group');

module.exports = bookshelf.Model.extend({
    tableName: 'endpoint',
    organization () {
        return this.belongsTo(Organization, 'id');
    },
    settings () {
        return this.hasOne(Settings, 'id');
    },
    group () {
        return this.belongsToMany(Group, 'map_endpoint_endpoint_group');
    }
});

这是我的组织模型：

'use strict';

const bookshelf = require('../config/bookshelf_instance');
const Endpoint = require('./endpoint');
const User = require('./user');
const Group = require('./endpoint_group');

module.exports = bookshelf.Model.extend({
    tableName: 'organization',
    endpoints () {
        return this.hasMany(Endpoint, 'organization_id');
    },
    users () {
        return this.hasMany(User, 'organization_id');
    },
    groups () {
        return this.hasMany(Group, 'organization_id');
    }
});

Answer 1

您应该从端点模型的关系规范中删除 id，因为它似乎是主键，而不是外键。默认情况下，外键也是 organization_id，这就是您想要的。它应该匹配你在相反关系中的内容（在这种情况下为 hasMany）。

根据文档，belongsTo 的第二个参数是：

ForeignKey in this model. By default, the foreignKey is assumed to be the singular form of the Target model's tableName, followed by _id.

目标模型的table名称为organization，即外键默认为organization_id。

Bookshelf.js: 一对多关系设置

Bookshelf.js: one-to-many relationship setup

bookshelf.js