我有以下型号:
const User = sequelize.define('user', {
name: Sequelize.TEXT,
avatar: Sequelize.TEXT,
});
const Event = sequelize.define('event', {
title: Sequelize.STRING,
description: Sequelize.TEXT,
timestamp: Sequelize.DATE,
});
const EventUser = sequelize.define('event_user', {});
Event.hasMany(EventUser);
EventUser.belongsTo(User);
所以EventUser
保存我的特定活动的参与者名单。
我试图查询用户X参与的所有事件:
let events = await Event.findAll({
include: [
{model: EventUser, include: [{model: User, where: {id: 1}}]}
],
});
但它不会获取该事件的其他参与者列表。不知道怎么做到这一点,谢谢!
答案 0 :(得分:1)
正确的方法是定义用户和事件之间的多对多关系
User.belongsToMany(Event, {through: 'EventUser'});
Event.belongsToMany(User, {through: 'EventUser'});
然后,您可以获得某些用户的所有事件:
User.findById(userId).then(function(user){
return user.getEvents();
}).then(function(events){
//here's events
});
或通过一个查询:
Event.findAll({
include: [{
model: User,
where: {id: userId}
}]
}).then(function(events){
//here's events
});