Is there a Hook after Incrementing/Decrementing an Instance?

“beforeUpdate”-Hook is not triggered if the Model Instance is incremented/decremented. Is there another way?

What I’m trying to archive is:

• updating a model instance multiple times in a very short period of time (avoid race conditions)
• only a part of the update is possible with increment/decrement (which should avoid race conditions?)
• the other value to update depends on the newly updated data (how to do this without race conditions?)

Using the build method is not possible because I have to determine the new value from the newly updated values, which i not have without race conditions.

// not possible because I don't know the actual values without race conditions?
modelInstance.build({}, {isNewRecord = false}).save(); 

So the possible solution I thought is, a Hook in combination with a race condition free increment/decrement method!? Any other possible sulutions?

Thank you

EDIT:

I didn’t realize that Increment returns a Promise and the new Data. So this solution should work without race conditions:

Counter.findById(...).then(counter =>
// this counter data is async and not necessary correct, right? 
// but it the doesn't matter here, because we are only incrementing now!
counter.increment({
   'count1': addValue1,
   'count2': addValue2
 }).then(counter => {
   // this counter data should be good to go, right?
    Counter.build({
        id: counter.id,
        greater: (counter.count1 >= counter.count2) ? 1 : 2
     },{isNewRecord: false})
     .save(['greater']);
 });

Any comments?

[Strate]

It would great to have a hook to do some things after increment/decrement, for example send new value to socket

[mickhansen]

increment/decrement is built to avoid race conditions by doing an atomic update. Because of the atomic update it’s not possible to have any hooks.

AFAIR increment does not return the new data, but it should be possible in postgres with RETURNING