Sequelize：手动更新 updatedAt

Question

Below is the code I am using in Hooks to update the updatedAt column for two objects:

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)
                        })
                    })
                }

Console Log:

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)

While the log, what I think, appears correct, why isn't the actual object in the DB updated to the new updatedAt value? Or is there an easier way to update an objects updatedAt column?

Answer 1

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 });

Answer 2

The following worked for:

group.changed('updatedAt', true)

This will mark the updatedAt column as dirty so it will be updated.

Answer 3

This worked for me

group.changed('updatedAt', true)

await group.update({
    updatedAt: new Date()
})

Calling just update with updatedAt = new Date is not enough, you must flag column as changed

Answer 4

Accodrding to the docs , you can update an instance value by calling instance.set(key, value, [options]) , so, in your case it should be:

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*/ })

Answer 5

I was able to update the updatedAt property on a model instance with the .changed() method. This only works if you set two property instances to changed = true

group.changed('updatedAt', true)
group.changed('exampleProperty', true)
await group.save({ silent: false })

Answer 6

我对 Alexander Zinchuk 的代码做了一些小改动，它对我有用：

await MyModel.update({ updatedAt: new Date() }, { where: { id: instance.id }})