Sequelize 创建 2 个条目而不是 1 个

Question

我有 2 个模型，patient 和 personalInformation。

有一个关联，例如personalInformation.belongsTo(patient)。在我的例子中，patient 主键或 uuid 作为 personalInformation 表中的一列存在。

当我的 API 收到一个 POST 请求时，我打算让我的控制器一起创建一个 patient 条目和 personalInformation 条目。

这是我的控制器代码：

// patient.controller.js

const db = require('../../db/databaseConfig');
const Patient = db.patients;
const PersonalInformation = db.personalInformation;
PersonalInformation.Patient = PersonalInformation.belongsTo(Patient);

exports.create = async (req, res) => {
    try {
        let payload = await req.body;
        await console.log('Recevied request: CREATE /api/patients & payload: ', payload);
        let newPatientEntry = Patient.create();
        let newPInfo = await PersonalInformation.create({
            ...payload,
            patient: newPatientEntry
        }, {
            include: [{
                association: PersonalInformation.Patient,
            }]
        });
        res.send(newPInfo);
    } catch (e) {
        console.log('error inside create method Patient controller');
        throw new Error(e);
    }
 };

结果是 2x 患者条目和 1x 个人信息条目，而不是 1x 患者条目和 1x 个人信息条目。个人信息条目在表中有一个患者的 uuid（创建的 2 个患者中的后者）。我不知道为什么有两个患者条目。

这里是相关的nodejs日志：

2018-12-05T01:17:57.644499+00:00 app[web.1]: Executing (default): INSERT INTO "patients" ("uuid","createdAt","updatedAt") VALUES ('89290b66-999d-4f10-96b3-4105a26a9450','2018-12-05 01:17:57.583 +00:00','2018-12-05 01:17:57.583 +00:00') RETURNING *;
2018-12-05T01:17:57.645703+00:00 app[web.1]: Executing (default): INSERT INTO "patients" ("uuid","createdAt","updatedAt") VALUES ('9ed075da-757a-457b-b939-ed7e4c7b523a','2018-12-05 01:17:57.612 +00:00','2018-12-05 01:17:57.612 +00:00') RETURNING *;
2018-12-05T01:17:57.659918+00:00 app[web.1]: Executing (default): INSERT INTO "personalInformations" ("id","nameTitle","nameFirst","nameMiddle","nameLast","nameSuffix","nameAlias","dateOfBirth","sex","gender","occupation","deceased","createdAt","updatedAt","patientUuid") VALUES (DEFAULT,'Mr','Robert','Swan','Mueller','II','Bob','1950-12-15 00:00:00.000 +00:00','Male','Man','Special Counsel','False','2018-12-05 01:17:57.594 +00:00','2018-12-05 01:17:57.594 +00:00','9ed075da-757a-457b-b939-ed7e4c7b523a') RETURNING *;

模型结构如下：

// patient.model.js

const uuid = require('uuid/v4');

module.exports = (sequelize, Sequelize) => {
    const Patient = sequelize.define('patient', {
        uuid: {
            primaryKey: true,
            allowNull: false,
            type: Sequelize.UUID,
            defaultValue: () => uuid(),
        }
    });
    return Patient;
};

和

// personalInformation.model.js

module.exports = (sequelize, Sequelize) => {
    const PersonalInformation = sequelize.define('personalInformation', {
        nameFirst: {
            type: Sequelize.STRING,
            notEmpty: true,
            allowNull: false,
        },
        nameLast: {
            type: Sequelize.STRING,
            notEmpty: true,
            allowNull: false,
        },
        ... etc
        ... etc
    });
    return PersonalInformation;
}

Answer 1

是的，它会创建 2 个条目，因为您要创建它两次：

let newPatientEntry = Patient.create(); // <----- HERE
let newPInfo = await PersonalInformation.create({
    ...payload,
    patient: newPatientEntry // <----- HERE
}, {
    include: [{
        association: PersonalInformation.Patient,
    }]
});

你可以试试这个：

// let newPatientEntry = Patient.create(); // <----- REMOVE THIS
let newPInfo = await PersonalInformation.create({
    ...payload,
    patient: {} //<---- MAKE THIS BLANK
}, {
    include: [{
        association: PersonalInformation.Patient,
    }]
});