我的团队成员模型: -
var teamMember = {
id: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true
},
level: DataTypes.INTEGER,
supervisorId: {
type: DataTypes.INTEGER,
references: {
model: "employees",
key: "id"
}
},
employeeId: {
type: DataTypes.INTEGER,
unique: true,
references: {
model: "employees",
key: "id"
}
}
并且有员工模型
映射: -
db.employee.hasOne(db.teamMember);
db.teamMember.belongsTo(db.employee);
我的查询功能
db.teamMember.findOne({
where: { employeeId: req.employee.id },
include: [db.employee]
})
.then(teamMember => {
if (!teamMember) {
throw ('no teamMember found');
}
consol.log(teamMember)
})
我的 teamMember 表就像=
id ------ employeeId ------ supervisorId
2 ----------- 4 ------------- 5
问题是 - :所以当我要求teamMember中的行,其employeeId为4.应该包含在supervisorId(JOIN)中,并返回包含4(id)的员工的行。我想要第5名员工。
supervisorId和employeeId都是员工表格。
答案 0 :(得分:10)
您不需要在模型上设置员工和主管的字段,只需执行所有它将添加它,并且您可以在那里指定if是唯一的并使用“as”以便您可以了解员工是你引用加入,普通员工或主管,如下:
db.teamMember.belongsTo(db.employee, {as: 'SupervisorId'});
db.teamMember.belongsTo(db.employee, {as: 'RegularEmployeeId'});
然后在您的查询中添加如下所示的包:
include: [{
model: db.employee,
as: 'SupervisorId
}]