如何使用引用同一表的 2 個外鍵創建續集 model

Question

我創建了這個續集 model 來存儲員工詳細信息，但由於某種原因，沒有創建外鍵，這些是我采用的模型和方法

部門 Model

module.exports = (sequelize, Sequelize) => {
    const Department = sequelize.define("department",{
        department_id:{
            type: Sequelize.UUID,
            defaultValue: Sequelize.UUIDV4,
            allowNull: false,
            unique: true,
            primaryKey:true
        },
        supervisor_id:{
            type: Sequelize.UUID,
            allowNull: true,
            references:{
                model:"users",
                key:"user_id"
            }
        },
        employee_id:{
            type: Sequelize.UUID,
            allowNull: true,
            references:{
                model:"users",
                key:"user_id"
            }
        }
    })
    return Department
}

用戶 Model

module.exports = (sequelize, Sequelize) => {
    const User = sequelize.define("user",{
        user_id:{
            type: Sequelize.UUID,
            defaultValue: Sequelize.UUIDV4,
            allowNull: false,
            unique: true,
            primaryKey:true
        },
        username:{
            type: Sequelize.STRING,
            allowNull: false,
        },
        password:{
            type: Sequelize.STRING,
            allowNull: false,
        },
        email:{
            type: Sequelize.STRING,
            allowNull: false,
            unique: true,
        },
        date_of_birth:{
            type: Sequelize.DATE,
            allowNull: false,
        },
        phone_number:{
            type: Sequelize.STRING,
            allowNull: false,
            unique: true,
        }

    })
    return User
}

這些是我試圖做出限制的方法

一：這個創建表但是約束不起作用，我無法獲取用戶數據

db.users.hasMany(db.matches, {as: 'employee_id_fk', foreignKey: 'employee_id'});
db.users.hasMany(db.matches, {as: 'supervisor_id_fk', foreignKey: 'supervisor_id'});

二：這個方法給我一個Error: Cyclic dependency found. users is dependent of itself. Dependency chain: users -> matches => users Error: Cyclic dependency found. users is dependent of itself. Dependency chain: users -> matches => users

db.matches.hasMany(db.users, {as: 'employee_id_fk', foreignKey: 'employee_id'});
db.matches.hasMany(db.users, {as: 'supervisor_id_fk', constraints: false, allowNull:true, defaultValue:null});
db.users.belongsTo(db.matches, {foreignKey: 'employee_id', constraints: false, allowNull:true, defaultValue:null})
db.users.belongsTo(db.matches, {foreignKey: 'supervisor_id', constraints: false, allowNull:true, defaultValue:null})

三：這個方法也報上面的錯誤

db.users.belongsTo(db.matches, {foreignKey: 'employee_id'})
db.users.belongsTo(db.matches, {foreignKey: 'supervisor_id'})

有沒有辦法解決這個問題，我嘗試了 StackOverflow 的多種解決方案，但無法讓它工作。

Answer 1

我創建了這個續集 model 來存儲員工詳細信息，但由於某種原因，沒有創建外鍵，這些是我采用的模型和方法

部門 Model

module.exports = (sequelize, Sequelize) => {
    const Department = sequelize.define("department",{
        department_id:{
            type: Sequelize.UUID,
            defaultValue: Sequelize.UUIDV4,
            allowNull: false,
            unique: true,
            primaryKey:true
        },
        supervisor_id:{
            type: Sequelize.UUID,
            allowNull: true,
            references:{
                model:"users",
                key:"user_id"
            }
        },
        employee_id:{
            type: Sequelize.UUID,
            allowNull: true,
            references:{
                model:"users",
                key:"user_id"
            }
        }
    })
    return Department
}

用戶 Model

module.exports = (sequelize, Sequelize) => {
    const User = sequelize.define("user",{
        user_id:{
            type: Sequelize.UUID,
            defaultValue: Sequelize.UUIDV4,
            allowNull: false,
            unique: true,
            primaryKey:true
        },
        username:{
            type: Sequelize.STRING,
            allowNull: false,
        },
        password:{
            type: Sequelize.STRING,
            allowNull: false,
        },
        email:{
            type: Sequelize.STRING,
            allowNull: false,
            unique: true,
        },
        date_of_birth:{
            type: Sequelize.DATE,
            allowNull: false,
        },
        phone_number:{
            type: Sequelize.STRING,
            allowNull: false,
            unique: true,
        }

    })
    return User
}

這些是我試圖做出限制的方法

一：這個創建表但是約束不起作用，我無法獲取用戶數據

db.users.hasMany(db.matches, {as: 'employee_id_fk', foreignKey: 'employee_id'});
db.users.hasMany(db.matches, {as: 'supervisor_id_fk', foreignKey: 'supervisor_id'});

二：這個方法給我一個Error: Cyclic dependency found. users is dependent of itself. Dependency chain: users -> matches => users Error: Cyclic dependency found. users is dependent of itself. Dependency chain: users -> matches => users

db.matches.hasMany(db.users, {as: 'employee_id_fk', foreignKey: 'employee_id'});
db.matches.hasMany(db.users, {as: 'supervisor_id_fk', constraints: false, allowNull:true, defaultValue:null});
db.users.belongsTo(db.matches, {foreignKey: 'employee_id', constraints: false, allowNull:true, defaultValue:null})
db.users.belongsTo(db.matches, {foreignKey: 'supervisor_id', constraints: false, allowNull:true, defaultValue:null})

三：這個方法也報上面的錯誤

db.users.belongsTo(db.matches, {foreignKey: 'employee_id'})
db.users.belongsTo(db.matches, {foreignKey: 'supervisor_id'})

有沒有辦法解決這個問題，我嘗試了 StackOverflow 的多種解決方案，但無法讓它工作。