如何在BookShelf.js中获取hasMany关系

Question

我正在尝试从要约模型中获取与投资模型具有“ hasMany”关系的数据，但我总是会收到错误“必须为要约hasMany关系定义有效的目标模型”

要约型号：

const Investment = require('./investment')

const Offer = bookShelfDatabase.Model.extend({
    tableName: 'offers',
    investment: function() {
        return this.hasMany(Investment);
      }
});

module.exports = Offer;

投资模式：

const Offer = require('./offer');


const Investment = bookShelfDatabase.Model.extend({
    tableName: 'investments',
    offers: function () {
        return this.belongsTo(Offer, 'offer_id');
      }
});

module.exports = Investment;

我的服务

const offers = await new Offer({ id: 1 }).fetchAll({
      withRelated: [
        {
          'investment': function (qb) {
            qb.select("id");
          },
        },
      ],
    });

Answer 1

您有一个循环依赖问题。 Offer要求Investment，Investment要求Offer，这将不起作用。