Question

我正在使用sequelize与数据库连接。我已经关联了2个模型，但是当我得到这些模型时，它会向我显示错误。

这是我的模型代码

const Sequelize = require('sequelize');
const sequelize = require('../database/database');

const Purpose = sequelize.define('purpose', {
  id: {
    type: Sequelize.INTEGER,
    primaryKey: true,
    autoIncrement: true,
    allowNull: false
  },
  title: {
    type: Sequelize.STRING,
    allowNull: false
  },
  weighting: {
    type: Sequelize.STRING,
    allowNull: false
  },
  iconsUrl: {
    type: Sequelize.STRING,
    allowNull: false
  }
})

module.exports = Purpose;

这是我将目的与其他表关联的方式

PurposeList.belongsToMany(User, { through: PurposeUser });
User.hasMany(LifeArea);

当我获取目的表或添加include: [ { model: PurposeUser, as: 'projects' } ],时出现此错误purposeUser is not associated to purpose!

我正在Angular 7中使用它。

我不确定这是否与角度相关，或者我使用的东西有误。

exports.getUserPurpose =  (req, res, next) => {

  const userID = req.userData.userId;
  const purposesList = [];
  PurposeUser.findAll({ where: {userId: userID },
    order: ['menuOrder'],
  })
  .then(results => {
    const purposeID = [];

    results.map(res => {
      purposeID.unshift(res.dataValues.purposeId);
      purposesList.unshift({id: res.dataValues.id, purposeId: res.dataValues.purposeId, weighting: res.dataValues.weighting})
    });

    return Purpose.findAll({
      include: [ { model: PurposeUser, as: 'projects' } ],
      where: {id: purposeID},
    })
  })
  .catch(err => console.log('err', err));
}```

Answer 1

您需要设置关系的两边...

Purpose.belongsToMany(User, { through: PurposeUser, as: 'Users', foreignKey: 'purpose_id' });
User.belongsToMany(, {Purpose, {through: PurposeUser, as: 'Purposes', foreignKey: 'user_id' });

您还需要在其中分配一些外键值，因为您可能已在PurposeUser中将列命名为Purpose_id和user_id。我看不到...

调用关联模型时出现Sequelizejs错误

1 个答案: