以下是我在Hooks中使用的代码,用于更新两个对象的hooks: {
afterUpdate: (group, options, callback) => {
console.log("groudId " + groupId + " options " + options)
},
afterCreate: (member, options, callback) => {
return new Promise((resolve, reject) => {
sequelize.models.Group.findOne({
where: {
id: member.group_id
}
}).then((group) => {
if (group) {
var date = new Date();
console.log("BEFORE group.updatedAt " + group.updatedAt)
group.dataValues.updatedAt = new Date()
console.log("CHANGED group.updatedAt " + group.updatedAt)
group.save().then((Group) => {
if (Group) {
console.log("UPDATED Group.updatedAt " + Group.updatedAt)
console.log("UPDATED group.updatedAt " + group.updatedAt)
resolve(Group)
} else {
console.log("NO GROUP Found")
return reject(group.id)
}
}).catch((error) => {
return (error)
})
} else {
return reject(id)
}
}).catch((error) => {
return (reject)
})
})
}
列:
BEFORE group.updatedAt Fri Feb 17 2017 17:36:00 GMT-0800 (PST)
CHANGED group.updatedAt Tue Feb 28 2017 14:00:17 GMT-0800 (PST)
UPDATED Group.updatedAt Tue Feb 28 2017 14:00:17 GMT-0800 (PST)
UPDATED group.updatedAt Tue Feb 28 2017 14:00:17 GMT-0800 (PST)
BEFORE group.updatedAt Fri Feb 17 2017 17:36:00 GMT-0800 (PST)
CHANGED group.updatedAt Tue Feb 28 2017 14:00:19 GMT-0800 (PST)
UPDATED Group.updatedAt Tue Feb 28 2017 14:00:19 GMT-0800 (PST)
UPDATED group.updatedAt Tue Feb 28 2017 14:00:19 GMT-0800 (PST)
控制台日志:
updatedAt
虽然我认为日志显示正确,但为什么数据库中的实际对象没有更新为新的updatedAt
值?或者是否有更简单的方式来更新对象dset.out <- dset[seg.var == value,]
列?
答案 0 :(得分:1)
这对我有用
group.changed('updatedAt', true)
await group.update({
updatedAt: new Date()
})
仅用updatedAt = new Date进行更新是不够的,您必须将列标记为已更改
答案 1 :(得分:0)
Accodrding to the docs,您可以通过调用instance.set(key, value, [options])
来更新实例值,因此,在您的情况下,它应该是:
console.log("BEFORE group.updatedAt " + group.updatedAt)
group.set('updatedAt', new Date())
console.log("CHANGED group.updatedAt " + group.updatedAt)
group.save().then((Group) => { /* the other part of your code*/ })
答案 2 :(得分:0)
以下工作:
group.changed('updatedAt', true)
这会将updatedAt
列标记为脏,以便更新。
答案 3 :(得分:0)
以上都不适合我,所以我不得不改用模型方法:
await MyModel.update({ updatedAt }, { where: { id: instance.id }, silent: true });
答案 4 :(得分:0)
我对Alexander Zinchuk的代码做了一些小改动,对我来说很有效:
await MyModel.update({ updatedAt: new Date() }, { where: { id: instance.id }})
答案 5 :(得分:0)
我能够使用 .changed() 方法更新模型实例上的 updatedAt 属性。这仅在您将两个属性实例设置为 changed = true 时才有效
group.changed('updatedAt', true)
group.changed('exampleProperty', true)
await group.save({ silent: false })