Sequelize三元协会

Question

我想与sequ​​elize js建立三元关联，但我不知道该怎么做。我尝试了两种不同的方法：

此转换导致另一个名为course的表。

方法1

这里我将关系的实体调用到结果表中。

FormationModel.js

    var FormationModel = sequelize.define('formationModel', {
  idFormation: {
    type: Sequelize.INTEGER,
    field: 'idFormation',
    primaryKey: true,
    autoIncrement: true
  },
  name: {
    type: Sequelize.STRING,
    field: 'name',
    allowNull: false
  },

}, {
  freezeTableName: true,
  timestamps: false,
});

FormationModel.sync({
  force: false
}).then(function () {

});

module.exports = FormationModel;

LectiveYearModel.js

var LectiveYearModel = sequelize.define('lectiveYearModel', {
  lectiveYear: {
    type: Sequelize.STRING,
    field: 'lectiveYear',
    primaryKey: true
  }
}, {
  freezeTableName: true,
  timestamps: false,
});

LectiveYearModel.sync({
  force: false
}).then(function () {

});

module.exports = LectiveYearModel;

PeriodModel

var PeriodModel = sequelize.define('periodModel', {
  idPeriod: {
    type: Sequelize.INTEGER,
    field: 'idPeriod',
    primaryKey: true,
    autoIncrement: true
  },
  name: {
    type: Sequelize.STRING,
    field: 'name',
    allowNull: false
  },
}, {
  freezeTableName: true,
  timestamps: false,
});

PeriodModel.sync({
  force: false
}).then(function () {

});

module.exports = PeriodModel;

CourseModel.js

var CourseModel = sequelize.define('courseModel', {
    idPeriod: {
        type: Sequelize.INTEGER,
        field: 'idPeriod',
        references : {
            model: PeriodModel,
            key: 'idPeriod'
        },
        primaryKey: true
    },
    idFormation: {
        type: Sequelize.INTEGER,
        field: 'idFormation',
        references : {
            model: FormationModel,
            key: 'idFormation'
        },
        primaryKey: true
    },
    idLectiveYear: {
        type: Sequelize.STRING,
        field: 'idLectiveYear',
        references : {
            model: LectiveYearModel,
            key: 'lectiveYear'
        },
        primaryKey: true
    }

}, {
    freezeTableName: true, // Model tableName will be the same as the model name
    timestamps: false,
});

CourseModel.sync({
    force: false
}).then(function () {

});
module.exports = CourseModel;

方法2

这几乎是相同的，但我在实体中使用belongsTo。

Formation.js

var Course = require('./Course');

var Formation = sequelize.define('formation', {
  id: {
    type: Sequelize.INTEGER,
    field: 'id',
    primaryKey: true,
    autoIncrement: true
  },
  name: {
    type: Sequelize.STRING,
    field: 'name',
    allowNull: false
  },

}, {
  freezeTableName: true,
  timestamps: false,
});

Formation.belongsToMany(Course, {as: 'formationFk', through: 'course', foreignKey: 'idFormation'});

Formation.sync({
  force: false
}).then(function () {

});
module.exports = Formation;

LectiveYear.js

var LectiveYear = sequelize.define('lectiveYear', {
  lectiveYear: {
    type: Sequelize.STRING,
    field: 'lectiveYear',
    primaryKey: true
  }
}, {
  freezeTableName: true,
  timestamps: false,
});
LectiveYear.belongsToMany(Course, {as: 'lectiveyearFk', through: 'course', foreignKey: 'idLectiveYear'});

LectiveYear.sync({
  force: false
}).then(function () {

});
module.exports = LectiveYear;

Period.js

var Period = sequelize.define('period', {
  idPeriod: {
    type: Sequelize.INTEGER,
    field: 'idPeriod',
    primaryKey: true,
    autoIncrement: true
  },
  name: {
    type: Sequelize.STRING,
    field: 'name',
    allowNull: false
  },

}, {
  freezeTableName: true,
  timestamps: false,
});

Period.belongsToMany(Course, {as: 'periodFk', through: 'course', foreignKey: 'idPeriod'});

Period.sync({
  force: false
}).then(function () {

});
module.exports = Period;

Course.js

var Course = sequelize.define('course', {        
    idPeriod: {
        type: Sequelize.INTEGER,
        field: 'idPeriod',
        primaryKey: true
    },    
    idLectiveYear: {
        type: Sequelize.STRING,
        field: 'idLectiveYear',
        primaryKey: true
    },

    idFormation: {
        type: Sequelize.INTEGER,
        field: 'idFormation',
        primaryKey: true
    }
}, {
    freezeTableName: true,
    timestamps: false,
});
Course.sync({
    force: false
}).then(function () {

});
module.exports = Course;