Sequelize 关联无法处理我的代码，请答案

【问题标题】：Sequelize association cant work on my code,pleaseSequelize 关联无法处理我的代码，请
【发布时间】：2020-02-19 13:16:07
【问题描述】：

我最近要续集。

我有 2 个表，data_track 和 car_detail。我想尝试关联那 2 个表，但它从未关联。

总是返回错误 SequelizeEagerLoadingError: car_detail 没有关联到 data_track！

请帮帮我

两个表的主键列名相同

data_track.js

const Sequelize = require('sequelize')
const gps_status_track = require("./../../configs/gps_status_track")

const data_track = gps_status_track.define('data_track',
    {
        car_id:{
            type:Sequelize.INTEGER,
            primaryKey:true
        },
        off_time:{
            type:Sequelize.INTEGER,
        },
        nopol:{
            type:Sequelize.STRING
        },
        wilayah:{
            type:Sequelize.STRING
        },
        status:{
            type:Sequelize.STRING
        },
        o_path:{
            type:Sequelize.STRING
        },
        keterangan:{
            type:Sequelize.STRING
        },
        last_update:{
            type:"TIMESTAMP"
        },   
    },
    {
        createdAt:'created_at',
        updatedAt:'updated_at',
        deletedAt:'deleted_at',
        freezeTableName: true,
    }
)

data_track.associate = (models)=>{
    data_track.belongsTo(models.car_detail,{foreignKey:'car_id',as:'dataTrack'})
} 

module.exports = data_track

car_detail.js

const Sequelize = require('sequelize')
const gps_status_track = require("./../../configs/gps_status_track")

const car_detail = gps_status_track.define('car_detail',
    {
        car_id:{
            type:Sequelize.INTEGER,
            primaryKey:true
        },
        nopol:{
            type:Sequelize.STRING
        },
        wilayah:{
            type:Sequelize.STRING
        },
        o_path:{
            type:Sequelize.STRING
        },
    },
    {
        createdAt:'created_at',
        updatedAt:'updated_at',
        deletedAt:'deleted_at',
        freezeTableName: true,
    }
)

car_detail.associate = (models)=>{
    car_detail.hasOne(models.data_track,{foreignKey:'car_id',as:'carDetail'})
} 

module.exports = car_detail

谢谢！

【问题讨论】：

标签： mysql sql node.js express sequelize.js

【解决方案1】：

您定义的关联不正确。

car_detail.hasOne(models.data_track,{foreignKey:'carIDFK', sourceKey: 'cardDetailPKId', as:'carDetail'})

在数据跟踪模型中，关联将如下所示。

data_track.belongsTo(models.car_detail,{foreignKey:'carIDFK', targetKey:'cardDetailTablePKId'})

【讨论】：

我已经试过你的代码，但它仍然给出同样的错误:(

【解决方案2】：

尝试这样做：

DataTrack.js：

module.exports = (sequelize, Sequelize) => {
    const DataTrack = sequelize.define('data_track',
        {
            car_id: {
                type: Sequelize.INTEGER,
                primaryKey: true
            },
            off_time: {
                type: Sequelize.INTEGER,
            },
            nopol: {
                type: Sequelize.STRING
            },
            wilayah: {
                type: Sequelize.STRING
            },
            status: {
                type: Sequelize.STRING
            },
            o_path: {
                type: Sequelize.STRING
            },
            keterangan: {
                type: Sequelize.STRING
            },
            last_update: {
                type: "TIMESTAMP"
            },
        },
        {
            createdAt: 'created_at',
            updatedAt: 'updated_at',
            deletedAt: 'deleted_at',
            freezeTableName: true,
        });
    return DataTrack;
}

CarDetail.js：

module.exports = (sequelize, Sequelize) => {
    const CarDetail = sequelize.define('car_detail',
        {
            car_id: {
                type: Sequelize.INTEGER,
                primaryKey: true
            },
            nopol: {
                type: Sequelize.STRING
            },
            wilayah: {
                type: Sequelize.STRING
            },
            o_path: {
                type: Sequelize.STRING
            },
        },
        {
            createdAt: 'created_at',
            updatedAt: 'updated_at',
            deletedAt: 'deleted_at',
            freezeTableName: true,
        }
    );
    return CarDetail;
}

db.config.js：

const env = require('./env.js')

const Sequelize = require('sequelize')
const sequelize = new Sequelize(env.database, env.username, env.password, {
    host: env.host,
    dialect: env.dialect
})

const db = {}

db.Sequelize = Sequelize
db.sequelize = sequelize

db.data_track = require('../models/DataTrack')(sequelize, Sequelize)
db.car_detail = require('../models/CarDetail')(sequelize, Sequelize)

db.car_detail.hasOne(db.data_track, { foreignKey: { name: 'cars_id', allowNull: false } })
db.data_track.belongsTo(db.car_detail, { foreignKey: { name: 'cars_id', allowNull: false } })


module.exports = db

【讨论】：