Cloud functions - Save data with loop

Question

I'm trying to set an object on Firebase database realtime by looping a list. For example, I have list of Objects. I want to run over that list and each loop save on database realtime the object. This is the code:

  if(feedVideosList.length > 0){
       feedVideosList.forEach(video =>{
         return admin.database().ref('/userFeed/${userUID}/').set(video);
     }).catch(error =>{
      console.log("Error user feed:  ",error);
    });
  }else{
    console.log("Problem with the videos list:  ",error);
  }

I'm pretty sure that this code is wrong and thats not the way I should write it. Like i said, what I'm trying to do is to run over a list and save each time the data on spasific node. The question is how should i do that, whats the right way to do that?

Frank van Puffelen · Accepted Answer · 2020-04-24 14:42:30Z

2

If you're running this code in Cloud Functions, my best guess is that you want the Cloud Function to terminate after all writes to the database are completed. You can use Promise.all() for that:

  if(feedVideosList.length > 0){
    let promises = []
     feedVideosList.forEach(video =>{
       promises.push(admin.database().ref('/userFeed/${userUID}/').set(video));
     })
     return Promise.all(promises).catch(error =>{
      console.log("Error user feed:  ",error);
    });
  }else{
    console.log("Problem with the videos list:  ",error);
  }

answered Apr 24, 2020 at 14:42

Frank van Puffelen

603k85 gold badges896 silver badges869 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

E.Bolandian Over a year ago

Exactly what i needed

Collectives™ on Stack Overflow

Cloud functions - Save data with loop

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related